update vidore

.gitignore

@@ -91,7 +91,8 @@ packages/leann-backend-diskann/third_party/DiskANN/_deps/
 
 *.meta.json
 *.passages.json
-
+*.npy
+*.db
 batchtest.py
 tests/__pytest_cache__/
 tests/__pycache__/

apps/multimodal/vision-based-pdf-multi-vector/leann_multi_vector.py

@@ -219,32 +219,47 @@ def _embed_images(model, processor, images: list[Image.Image]) -> list[Any]:
 
 def _embed_queries(model, processor, queries: list[str]) -> list[Any]:
     import torch
-    from colpali_engine.utils.torch_utils import ListDataset
-    from torch.utils.data import DataLoader
 
     model.eval()
 
-    dataloader = DataLoader(
+    # Match MTEB's exact query processing from ColPaliEngineWrapper.get_text_embeddings:
-        dataset=ListDataset[str](queries),
+    # 1. MTEB receives batch["text"] which may already include instruction/prompt
-        batch_size=1,
+    # 2. Manually adds: query_prefix + text + query_augmentation_token * 10
-        shuffle=False,
+    # 3. Calls processor.process_queries(batch) where batch is now a list of strings
-        collate_fn=lambda x: processor.process_queries(x),
+    # 4. process_queries adds: query_prefix + text + suffix (suffix = query_augmentation_token * 10)
-    )
+    # 
+    # However, MTEB's approach results in duplicate addition (20 tokens total).
+    # Since we're already adding the prompt in search_queries, let's try:
+    # Option 1: Just call process_queries (let it handle all additions) - avoids duplicate
+    # Option 2: Manual add + process_texts (to avoid duplicate)
+    # 
+    # Testing shows Option 1 works better - just call process_queries without manual addition
+    
+    all_embeds = []
+    batch_size = 32  # Match MTEB's default batch_size
+    
+    with torch.no_grad():
+        for i in tqdm(range(0, len(queries), batch_size), desc="Embedding queries"):
+            batch_queries = queries[i:i + batch_size]
+            
+            # Just call process_queries - it will add query_prefix + text + 10 tokens
+            # This avoids duplicate addition that happens in MTEB's approach
+            inputs = processor.process_queries(batch_queries)
+            inputs = {k: v.to(model.device) for k, v in inputs.items()}
             
-    q_vecs: list[Any] = []
-    for batch_query in tqdm(dataloader, desc="Embedding queries"):
-        with torch.no_grad():
-            batch_query = {k: v.to(model.device) for k, v in batch_query.items()}
             if model.device.type == "cuda":
                 with torch.autocast(
                     device_type="cuda",
                     dtype=model.dtype if model.dtype.is_floating_point else torch.bfloat16,
                 ):
-                    embeddings_query = model(**batch_query)
+                    outs = model(**inputs)
             else:
-                embeddings_query = model(**batch_query)
+                outs = model(**inputs)
-        q_vecs.extend(list(torch.unbind(embeddings_query.to("cpu"))))
+            
-    return q_vecs
+            # Match MTEB: convert to float32 on CPU
+            all_embeds.extend(list(torch.unbind(outs.cpu().to(torch.float32))))
+    
+    return all_embeds
 
 
 def _build_index(
@@ -284,6 +299,247 @@ def _load_retriever_if_index_exists(index_path: str) -> Optional[Any]:
     return None
 
 
+def _build_fast_plaid_index(
+    index_path: str,
+    doc_vecs: list[Any],
+    filepaths: list[str],
+    images: list[Image.Image],
+) -> tuple[Any, float]:
+    """
+    Build a Fast-Plaid index from document embeddings.
+    
+    Args:
+        index_path: Path to save the Fast-Plaid index
+        doc_vecs: List of document embeddings (each is a tensor with shape [num_tokens, embedding_dim])
+        filepaths: List of filepath identifiers for each document
+        images: List of PIL Images corresponding to each document
+    
+    Returns:
+        Tuple of (FastPlaid index object, build_time_in_seconds)
+    """
+    import torch
+    from fast_plaid import search as fast_plaid_search
+    
+    print(f"    Preparing {len(doc_vecs)} document embeddings for Fast-Plaid...")
+    _t0 = time.perf_counter()
+    
+    # Convert doc_vecs to list of tensors
+    documents_embeddings = []
+    for i, vec in enumerate(doc_vecs):
+        if i % 1000 == 0:
+            print(f"      Converting embedding {i}/{len(doc_vecs)}...")
+        if not isinstance(vec, torch.Tensor):
+            vec = torch.tensor(vec) if isinstance(vec, np.ndarray) else torch.from_numpy(np.array(vec))
+        # Ensure float32 for Fast-Plaid
+        if vec.dtype != torch.float32:
+            vec = vec.float()
+        documents_embeddings.append(vec)
+    
+    print(f"    Converted {len(documents_embeddings)} embeddings")
+    if len(documents_embeddings) > 0:
+        print(f"    First embedding shape: {documents_embeddings[0].shape}")
+        print(f"    First embedding dtype: {documents_embeddings[0].dtype}")
+    
+    # Prepare metadata for Fast-Plaid
+    print(f"    Preparing metadata for {len(filepaths)} documents...")
+    metadata_list = []
+    for i, filepath in enumerate(filepaths):
+        metadata_list.append({
+            "filepath": filepath,
+            "index": i,
+        })
+    
+    # Create Fast-Plaid index
+    print(f"    Creating FastPlaid object with index path: {index_path}")
+    try:
+        fast_plaid_index = fast_plaid_search.FastPlaid(index=index_path)
+        print(f"    FastPlaid object created successfully")
+    except Exception as e:
+        print(f"    Error creating FastPlaid object: {type(e).__name__}: {e}")
+        import traceback
+        traceback.print_exc()
+        raise
+    
+    print(f"    Calling fast_plaid_index.create() with {len(documents_embeddings)} documents...")
+    try:
+        fast_plaid_index.create(
+            documents_embeddings=documents_embeddings,
+            metadata=metadata_list,
+        )
+        print(f"    Fast-Plaid index created successfully")
+    except Exception as e:
+        print(f"    Error creating Fast-Plaid index: {type(e).__name__}: {e}")
+        import traceback
+        traceback.print_exc()
+        raise
+    
+    build_secs = time.perf_counter() - _t0
+    
+    # Save images separately (Fast-Plaid doesn't store images)
+    print(f"    Saving {len(images)} images...")
+    images_dir = Path(index_path) / "images"
+    images_dir.mkdir(parents=True, exist_ok=True)
+    for i, img in enumerate(tqdm(images, desc="Saving images")):
+        img_path = images_dir / f"doc_{i}.png"
+        img.save(str(img_path))
+    
+    return fast_plaid_index, build_secs
+
+
+def _fast_plaid_index_exists(index_path: str) -> bool:
+    """
+    Check if Fast-Plaid index exists by checking for key files.
+    This avoids creating the FastPlaid object which may trigger memory allocation.
+    
+    Args:
+        index_path: Path to the Fast-Plaid index
+    
+    Returns:
+        True if index appears to exist, False otherwise
+    """
+    index_path_obj = Path(index_path)
+    if not index_path_obj.exists() or not index_path_obj.is_dir():
+        return False
+    
+    # Fast-Plaid creates a SQLite database file for metadata
+    # Check for metadata.db as the most reliable indicator
+    metadata_db = index_path_obj / "metadata.db"
+    if metadata_db.exists() and metadata_db.stat().st_size > 0:
+        return True
+    
+    # Also check if directory has any files (might be incomplete index)
+    try:
+        if any(index_path_obj.iterdir()):
+            return True
+    except Exception:
+        pass
+    
+    return False
+
+
+def _load_fast_plaid_index_if_exists(index_path: str) -> Optional[Any]:
+    """
+    Load Fast-Plaid index if it exists.
+    First checks if index files exist, then creates the FastPlaid object.
+    The actual index data loading happens lazily when search is called.
+    
+    Args:
+        index_path: Path to the Fast-Plaid index
+    
+    Returns:
+        FastPlaid index object if exists, None otherwise
+    """
+    try:
+        from fast_plaid import search as fast_plaid_search
+        
+        # First check if index files exist without creating the object
+        if not _fast_plaid_index_exists(index_path):
+            return None
+        
+        # Now try to create FastPlaid object
+        # This may trigger some memory allocation, but the full index loading is deferred
+        fast_plaid_index = fast_plaid_search.FastPlaid(index=index_path)
+        return fast_plaid_index
+    except ImportError:
+        # fast-plaid not installed
+        return None
+    except Exception as e:
+        # Any error (including memory errors from Rust backend) - return None
+        # The error will be caught and index will be rebuilt
+        print(f"Warning: Could not load Fast-Plaid index: {type(e).__name__}: {e}")
+        return None
+
+
+def _search_fast_plaid(
+    fast_plaid_index: Any,
+    query_vec: Any,
+    top_k: int,
+) -> tuple[list[tuple[float, int]], float]:
+    """
+    Search Fast-Plaid index with a query embedding.
+    
+    Args:
+        fast_plaid_index: FastPlaid index object
+        query_vec: Query embedding tensor with shape [num_tokens, embedding_dim]
+        top_k: Number of top results to return
+    
+    Returns:
+        Tuple of (results_list, search_time_in_seconds)
+        results_list: List of (score, doc_id) tuples
+    """
+    import torch
+    
+    _t0 = time.perf_counter()
+    
+    # Ensure query is a torch tensor
+    if not isinstance(query_vec, torch.Tensor):
+        q_vec_tensor = torch.tensor(query_vec) if isinstance(query_vec, np.ndarray) else torch.from_numpy(np.array(query_vec))
+    else:
+        q_vec_tensor = query_vec
+    
+    # Fast-Plaid expects shape [num_queries, num_tokens, embedding_dim]
+    if q_vec_tensor.dim() == 2:
+        q_vec_tensor = q_vec_tensor.unsqueeze(0)  # [1, num_tokens, embedding_dim]
+    
+    # Perform search
+    scores = fast_plaid_index.search(
+        queries_embeddings=q_vec_tensor,
+        top_k=top_k,
+        show_progress=True,
+    )
+    
+    search_secs = time.perf_counter() - _t0
+    
+    # Convert Fast-Plaid results to same format as LEANN: list of (score, doc_id) tuples
+    results = []
+    if scores and len(scores) > 0:
+        query_results = scores[0]
+        # Fast-Plaid returns (doc_id, score), convert to (score, doc_id) to match LEANN format
+        results = [(float(score), int(doc_id)) for doc_id, score in query_results]
+    
+    return results, search_secs
+
+
+def _get_fast_plaid_image(index_path: str, doc_id: int) -> Optional[Image.Image]:
+    """
+    Retrieve image for a document from Fast-Plaid index.
+    
+    Args:
+        index_path: Path to the Fast-Plaid index
+        doc_id: Document ID
+    
+    Returns:
+        PIL Image if found, None otherwise
+    """
+    images_dir = Path(index_path) / "images"
+    image_path = images_dir / f"doc_{doc_id}.png"
+    
+    if image_path.exists():
+        return Image.open(image_path)
+    return None
+
+
+def _get_fast_plaid_metadata(index_path: str, doc_id: int) -> Optional[dict]:
+    """
+    Retrieve metadata for a document from Fast-Plaid index.
+    
+    Args:
+        index_path: Path to the Fast-Plaid index
+        doc_id: Document ID
+    
+    Returns:
+        Dictionary with metadata if found, None otherwise
+    """
+    try:
+        from fast_plaid import filtering
+        metadata_list = filtering.get(index=index_path, subset=[doc_id])
+        if metadata_list and len(metadata_list) > 0:
+            return metadata_list[0]
+    except Exception:
+        pass
+    return None
+
+
 def _generate_similarity_map(
     model,
     processor,

apps/multimodal/vision-based-pdf-multi-vector/multi-vector-leann-similarity-map.py

@@ -2,13 +2,18 @@
 # %%
 # uv pip install matplotlib qwen_vl_utils
 import argparse
+import faulthandler
 import os
 import time
 from typing import Any, Optional
 
+import numpy as np
 from PIL import Image
 from tqdm import tqdm
 
+# Enable faulthandler to get stack trace on segfault
+faulthandler.enable()
+
 
 from leann_multi_vector import (  # utility functions/classes
     _ensure_repo_paths_importable,
@@ -20,6 +25,11 @@ from leann_multi_vector import (  # utility functions/classes
     _build_index,
     _load_retriever_if_index_exists,
     _generate_similarity_map,
+    _build_fast_plaid_index,
+    _load_fast_plaid_index_if_exists,
+    _search_fast_plaid,
+    _get_fast_plaid_image,
+    _get_fast_plaid_metadata,
     QwenVL,
 )
 
@@ -69,6 +79,8 @@ PAGES_DIR: str = "./pages"
 # Index + retrieval settings
 # Use a different index path for larger dataset to avoid overwriting existing index
 INDEX_PATH: str = "./indexes/colvision_large.leann"
+# Fast-Plaid index settings (alternative to LEANN index)
+# These are now command-line arguments (see CLI overrides section)
 TOPK: int = 3
 FIRST_STAGE_K: int = 500
 REBUILD_INDEX: bool = False
@@ -98,24 +110,64 @@ parser.add_argument(
     default=QUERY,
     help=f"Query string to search for. Default: '{QUERY}'",
 )
+parser.add_argument(
+    "--use-fast-plaid",
+    action="store_true",
+    default=False,
+    help="Set to True to use fast-plaid instead of LEANN. Default: False",
+)
+parser.add_argument(
+    "--fast-plaid-index-path",
+    type=str,
+    default="./indexes/colvision_fastplaid",
+    help="Path to the Fast-Plaid index. Default: './indexes/colvision_fastplaid'",
+)
 cli_args, _unknown = parser.parse_known_args()
 SEARCH_METHOD: str = cli_args.search_method
 QUERY = cli_args.query  # Override QUERY with CLI argument if provided
+USE_FAST_PLAID: bool = cli_args.use_fast_plaid
+FAST_PLAID_INDEX_PATH: str = cli_args.fast_plaid_index_path
 
 # %%
 
 # Step 1: Check if we can skip data loading (index already exists)
 retriever: Optional[Any] = None
+fast_plaid_index: Optional[Any] = None
 need_to_build_index = REBUILD_INDEX
 
-if not REBUILD_INDEX:
+if USE_FAST_PLAID:
-    retriever = _load_retriever_if_index_exists(INDEX_PATH)
+    # Fast-Plaid index handling
-    if retriever is not None:
+    if not REBUILD_INDEX:
-        print(f"✓ Index loaded from {INDEX_PATH}")
+        try:
-        print(f"✓ Images available at: {retriever._images_dir_path()}")
+            fast_plaid_index = _load_fast_plaid_index_if_exists(FAST_PLAID_INDEX_PATH)
-        need_to_build_index = False
+            if fast_plaid_index is not None:
+                print(f"✓ Fast-Plaid index found at {FAST_PLAID_INDEX_PATH}")
+                need_to_build_index = False
+            else:
+                print(f"Fast-Plaid index not found, will build new index")
+                need_to_build_index = True
+        except Exception as e:
+            # If loading fails (e.g., memory error, corrupted index), rebuild
+            print(f"Warning: Failed to load Fast-Plaid index: {e}")
+            print("Will rebuild the index...")
+            need_to_build_index = True
+            fast_plaid_index = None
     else:
-        print(f"Index not found, will build new index")
+        print(f"REBUILD_INDEX=True, will rebuild Fast-Plaid index")
+        need_to_build_index = True
+else:
+    # Original LEANN index handling
+    if not REBUILD_INDEX:
+        retriever = _load_retriever_if_index_exists(INDEX_PATH)
+        if retriever is not None:
+            print(f"✓ Index loaded from {INDEX_PATH}")
+            print(f"✓ Images available at: {retriever._images_dir_path()}")
+            need_to_build_index = False
+        else:
+            print(f"Index not found, will build new index")
+            need_to_build_index = True
+    else:
+        print(f"REBUILD_INDEX=True, will rebuild index")
         need_to_build_index = True
 
 # Step 2: Load data only if we need to build the index
@@ -347,6 +399,19 @@ if need_to_build_index:
                 f"No images found in {PAGES_DIR}. Provide PDF path in PDF variable or ensure images exist."
             )
     print(f"Loaded {len(images)} images")
+    
+    # Memory check before loading model
+    try:
+        import psutil
+        import torch
+        process = psutil.Process(os.getpid())
+        mem_info = process.memory_info()
+        print(f"Memory usage after loading images: {mem_info.rss / 1024 / 1024 / 1024:.2f} GB")
+        if torch.cuda.is_available():
+            print(f"GPU memory allocated: {torch.cuda.memory_allocated() / 1024**3:.2f} GB")
+            print(f"GPU memory reserved: {torch.cuda.memory_reserved() / 1024**3:.2f} GB")
+    except ImportError:
+        pass
 else:
     print("Skipping dataset loading (using existing index)")
     filepaths = []  # Not needed when using existing index
@@ -355,23 +420,91 @@ else:
 
 # %%
 # Step 3: Load model and processor (only if we need to build index or perform search)
-model_name, model, processor, device_str, device, dtype = _load_colvision(MODEL)
+print("Step 3: Loading model and processor...")
-print(f"Using model={model_name}, device={device_str}, dtype={dtype}")
+print(f"  Model: {MODEL}")
+try:
+    import sys
+    print(f"  Python version: {sys.version}")
+    print(f"  Python executable: {sys.executable}")
+    
+    model_name, model, processor, device_str, device, dtype = _load_colvision(MODEL)
+    print(f"✓ Using model={model_name}, device={device_str}, dtype={dtype}")
+    
+    # Memory check after loading model
+    try:
+        import psutil
+        import torch
+        process = psutil.Process(os.getpid())
+        mem_info = process.memory_info()
+        print(f"  Memory usage after loading model: {mem_info.rss / 1024 / 1024 / 1024:.2f} GB")
+        if torch.cuda.is_available():
+            print(f"  GPU memory allocated: {torch.cuda.memory_allocated() / 1024**3:.2f} GB")
+            print(f"  GPU memory reserved: {torch.cuda.memory_reserved() / 1024**3:.2f} GB")
+    except ImportError:
+        pass
+except Exception as e:
+    print(f"✗ Error loading model: {type(e).__name__}: {e}")
+    import traceback
+    traceback.print_exc()
+    raise
 
 
 # %%
 
 # %%
 # Step 4: Build index if needed
-if need_to_build_index and retriever is None:
+if need_to_build_index:
-    print("Building index...")
+    print("Step 4: Building index...")
-    doc_vecs = _embed_images(model, processor, images)
+    print(f"  Number of images: {len(images)}")
-    retriever = _build_index(INDEX_PATH, doc_vecs, filepaths, images)
+    print(f"  Number of filepaths: {len(filepaths)}")
-    print(f"✓ Index built and images saved to: {retriever._images_dir_path()}")
-    # Clear memory
-    del images, filepaths, doc_vecs
     
-# Note: Images are now stored in the index, retriever will load them on-demand from disk
+    try:
+        print("  Embedding images...")
+        doc_vecs = _embed_images(model, processor, images)
+        print(f"  Embedded {len(doc_vecs)} documents")
+        print(f"  First doc vec shape: {doc_vecs[0].shape if len(doc_vecs) > 0 else 'N/A'}")
+    except Exception as e:
+        print(f"Error embedding images: {type(e).__name__}: {e}")
+        import traceback
+        traceback.print_exc()
+        raise
+    
+    if USE_FAST_PLAID:
+        # Build Fast-Plaid index
+        print("  Building Fast-Plaid index...")
+        try:
+            fast_plaid_index, build_secs = _build_fast_plaid_index(
+                FAST_PLAID_INDEX_PATH, doc_vecs, filepaths, images
+            )
+            from pathlib import Path
+            print(f"✓ Fast-Plaid index built in {build_secs:.3f}s")
+            print(f"✓ Index saved to: {FAST_PLAID_INDEX_PATH}")
+            print(f"✓ Images saved to: {Path(FAST_PLAID_INDEX_PATH) / 'images'}")
+        except Exception as e:
+            print(f"Error building Fast-Plaid index: {type(e).__name__}: {e}")
+            import traceback
+            traceback.print_exc()
+            raise
+        finally:
+            # Clear memory
+            print("  Clearing memory...")
+            del images, filepaths, doc_vecs
+    else:
+        # Build original LEANN index
+        try:
+            retriever = _build_index(INDEX_PATH, doc_vecs, filepaths, images)
+            print(f"✓ Index built and images saved to: {retriever._images_dir_path()}")
+        except Exception as e:
+            print(f"Error building LEANN index: {type(e).__name__}: {e}")
+            import traceback
+            traceback.print_exc()
+            raise
+        finally:
+            # Clear memory
+            print("  Clearing memory...")
+            del images, filepaths, doc_vecs
+
+# Note: Images are now stored separately, retriever/fast_plaid_index will reference them
 
 
 # %%
@@ -380,44 +513,67 @@ _t0 = time.perf_counter()
 q_vec = _embed_queries(model, processor, [QUERY])[0]
 query_embed_secs = time.perf_counter() - _t0
 
-query_np = q_vec.float().numpy()
-
 print(f"[Search] Method: {SEARCH_METHOD}")
 print(f"[Timing] Query embedding: {query_embed_secs:.3f}s")
 
 # Run the selected search method and time it
-_t0 = time.perf_counter()
+if USE_FAST_PLAID:
-if SEARCH_METHOD == "ann":
+    # Fast-Plaid search
-    results = retriever.search(query_np, topk=TOPK, first_stage_k=FIRST_STAGE_K)
+    if fast_plaid_index is None:
-    search_secs = time.perf_counter() - _t0
+        fast_plaid_index = _load_fast_plaid_index_if_exists(FAST_PLAID_INDEX_PATH)
-    print(f"[Timing] Search (ANN): {search_secs:.3f}s (first_stage_k={FIRST_STAGE_K})")
+        if fast_plaid_index is None:
-elif SEARCH_METHOD == "exact":
+            raise RuntimeError(f"Fast-Plaid index not found at {FAST_PLAID_INDEX_PATH}")
-    results = retriever.search_exact(query_np, topk=TOPK, first_stage_k=FIRST_STAGE_K)
+    
-    search_secs = time.perf_counter() - _t0
+    results, search_secs = _search_fast_plaid(fast_plaid_index, q_vec, TOPK)
-    print(f"[Timing] Search (Exact rerank): {search_secs:.3f}s (first_stage_k={FIRST_STAGE_K})")
+    print(f"[Timing] Fast-Plaid Search: {search_secs:.3f}s")
-elif SEARCH_METHOD == "exact-all":
-    results = retriever.search_exact_all(query_np, topk=TOPK)
-    search_secs = time.perf_counter() - _t0
-    print(f"[Timing] Search (Exact all): {search_secs:.3f}s")
 else:
-    results = []
+    # Original LEANN search
+    query_np = q_vec.float().numpy()
+    
+    if SEARCH_METHOD == "ann":
+        results = retriever.search(query_np, topk=TOPK, first_stage_k=FIRST_STAGE_K)
+        search_secs = time.perf_counter() - _t0
+        print(f"[Timing] Search (ANN): {search_secs:.3f}s (first_stage_k={FIRST_STAGE_K})")
+    elif SEARCH_METHOD == "exact":
+        results = retriever.search_exact(query_np, topk=TOPK, first_stage_k=FIRST_STAGE_K)
+        search_secs = time.perf_counter() - _t0
+        print(f"[Timing] Search (Exact rerank): {search_secs:.3f}s (first_stage_k={FIRST_STAGE_K})")
+    elif SEARCH_METHOD == "exact-all":
+        results = retriever.search_exact_all(query_np, topk=TOPK)
+        search_secs = time.perf_counter() - _t0
+        print(f"[Timing] Search (Exact all): {search_secs:.3f}s")
+    else:
+        results = []
 if not results:
     print("No results found.")
 else:
     print(f'Top {len(results)} results for query: "{QUERY}"')
     top_images: list[Image.Image] = []
     for rank, (score, doc_id) in enumerate(results, start=1):
-        # Retrieve image from index instead of memory
+        # Retrieve image and metadata based on index type
-        image = retriever.get_image(doc_id)
+        if USE_FAST_PLAID:
-        if image is None:
+            # Fast-Plaid: load image and get metadata
-            print(f"Warning: Could not retrieve image for doc_id {doc_id}")
+            image = _get_fast_plaid_image(FAST_PLAID_INDEX_PATH, doc_id)
-            continue
+            if image is None:
+                print(f"Warning: Could not find image for doc_id {doc_id}")
+                continue
+            
+            metadata = _get_fast_plaid_metadata(FAST_PLAID_INDEX_PATH, doc_id)
+            path = metadata.get("filepath", f"doc_{doc_id}") if metadata else f"doc_{doc_id}"
+            top_images.append(image)
+        else:
+            # Original LEANN: retrieve from retriever
+            image = retriever.get_image(doc_id)
+            if image is None:
+                print(f"Warning: Could not retrieve image for doc_id {doc_id}")
+                continue
+
+            metadata = retriever.get_metadata(doc_id)
+            path = metadata.get("filepath", "unknown") if metadata else "unknown"
+            top_images.append(image)
         
-        metadata = retriever.get_metadata(doc_id)
-        path = metadata.get("filepath", "unknown") if metadata else "unknown"
         # For HF dataset, path is a descriptive identifier, not a real file path
         print(f"{rank}) MaxSim: {score:.4f}, Page: {path}")
-        top_images.append(image)
 
     if SAVE_TOP_IMAGE:
         from pathlib import Path as _Path

apps/multimodal/vision-based-pdf-multi-vector/vidore_v2_benchmark.py

@@ -0,0 +1,629 @@
+#!/usr/bin/env python3
+"""
+Modular script to reproduce NDCG results for ViDoRe v2 benchmark.
+
+This script uses the interface from leann_multi_vector.py to:
+1. Download ViDoRe v2 datasets
+2. Build indexes (LEANN or Fast-Plaid)
+3. Perform retrieval
+4. Evaluate using NDCG metrics
+
+Usage:
+    # Evaluate all ViDoRe v2 tasks
+    python vidore_v2_benchmark.py --model colqwen2 --tasks all
+    
+    # Evaluate specific task
+    python vidore_v2_benchmark.py --model colqwen2 --task Vidore2ESGReportsRetrieval
+    
+    # Use Fast-Plaid index
+    python vidore_v2_benchmark.py --model colqwen2 --use-fast-plaid --fast-plaid-index-path ./indexes/vidore_fastplaid
+    
+    # Rebuild index
+    python vidore_v2_benchmark.py --model colqwen2 --rebuild-index
+"""
+
+import argparse
+import json
+import os
+import time
+from pathlib import Path
+from typing import Any, Optional
+
+import numpy as np
+from datasets import load_dataset
+from PIL import Image
+from tqdm import tqdm
+
+# Import MTEB for evaluation metrics
+try:
+    import pytrec_eval
+    from mteb._evaluators.retrieval_metrics import (
+        calculate_retrieval_scores,
+        make_score_dict,
+    )
+except ImportError:
+    print("Warning: MTEB not available. Install with: pip install mteb")
+    pytrec_eval = None
+
+from leann_multi_vector import (
+    _ensure_repo_paths_importable,
+    _load_colvision,
+    _embed_images,
+    _embed_queries,
+    _build_index,
+    _load_retriever_if_index_exists,
+    _build_fast_plaid_index,
+    _load_fast_plaid_index_if_exists,
+    _search_fast_plaid,
+    _get_fast_plaid_image,
+    _get_fast_plaid_metadata,
+)
+
+_ensure_repo_paths_importable(__file__)
+
+# Language name to dataset language field value mapping
+# Dataset uses ISO 639-3 + ISO 15924 format (e.g., "eng-Latn")
+LANGUAGE_MAPPING = {
+    "english": "eng-Latn",
+    "french": "fra-Latn",
+    "spanish": "spa-Latn",
+    "german": "deu-Latn",
+}
+
+# ViDoRe v2 task configurations
+# Prompts match MTEB task metadata prompts
+VIDORE_V2_TASKS = {
+    "Vidore2ESGReportsRetrieval": {
+        "dataset_path": "vidore/esg_reports_v2",
+        "revision": "0542c0d03da0ec1c8cbc517c8d78e7e95c75d3d3",
+        "languages": ["french", "spanish", "english", "german"],
+        "prompt": {"query": "Find a screenshot that relevant to the user's question."},
+    },
+    "Vidore2EconomicsReportsRetrieval": {
+        "dataset_path": "vidore/economics_reports_v2",
+        "revision": "b3e3a04b07fbbaffe79be49dabf92f691fbca252",
+        "languages": ["french", "spanish", "english", "german"],
+        "prompt": {"query": "Find a screenshot that relevant to the user's question."},
+    },
+    "Vidore2BioMedicalLecturesRetrieval": {
+        "dataset_path": "vidore/biomedical_lectures_v2",
+        "revision": "a29202f0da409034d651614d87cd8938d254e2ea",
+        "languages": ["french", "spanish", "english", "german"],
+        "prompt": {"query": "Find a screenshot that relevant to the user's question."},
+    },
+    "Vidore2ESGReportsHLRetrieval": {
+        "dataset_path": "vidore/esg_reports_human_labeled_v2",
+        "revision": "6d467dedb09a75144ede1421747e47cf036857dd",
+        # Note: This dataset doesn't have language filtering - all queries are English
+        "languages": None,  # No language filtering needed
+        "prompt": {"query": "Find a screenshot that relevant to the user's question."},
+    },
+}
+
+
+def load_vidore_v2_data(
+    dataset_path: str,
+    revision: Optional[str] = None,
+    split: str = "test",
+    language: Optional[str] = None,
+):
+    """
+    Load ViDoRe v2 dataset.
+    
+    Returns:
+        corpus: dict mapping corpus_id to PIL Image
+        queries: dict mapping query_id to query text
+        qrels: dict mapping query_id to dict of {corpus_id: relevance_score}
+    """
+    print(f"Loading dataset: {dataset_path} (split={split}, language={language})")
+    
+    # Load queries
+    query_ds = load_dataset(dataset_path, "queries", split=split, revision=revision)
+    
+    # Check if dataset has language field before filtering
+    has_language_field = len(query_ds) > 0 and "language" in query_ds.column_names
+    
+    if language and has_language_field:
+        # Map language name to dataset language field value (e.g., "english" -> "eng-Latn")
+        dataset_language = LANGUAGE_MAPPING.get(language, language)
+        query_ds_filtered = query_ds.filter(lambda x: x.get("language") == dataset_language)
+        # Check if filtering resulted in empty dataset
+        if len(query_ds_filtered) == 0:
+            print(f"Warning: No queries found after filtering by language '{language}' (mapped to '{dataset_language}').")
+            # Try with original language value (dataset might use simple names like 'english')
+            print(f"Trying with original language value '{language}'...")
+            query_ds_filtered = query_ds.filter(lambda x: x.get("language") == language)
+            if len(query_ds_filtered) == 0:
+                # Try to get a sample to see actual language values
+                try:
+                    sample_ds = load_dataset(dataset_path, "queries", split=split, revision=revision)
+                    if len(sample_ds) > 0 and "language" in sample_ds.column_names:
+                        sample_langs = set(sample_ds["language"])
+                        print(f"Available language values in dataset: {sample_langs}")
+                except Exception:
+                    pass
+            else:
+                print(f"Found {len(query_ds_filtered)} queries using original language value '{language}'")
+        query_ds = query_ds_filtered
+    
+    queries = {}
+    for row in query_ds:
+        query_id = f"query-{split}-{row['query-id']}"
+        queries[query_id] = row["query"]
+    
+    # Load corpus (images)
+    corpus_ds = load_dataset(dataset_path, "corpus", split=split, revision=revision)
+    
+    corpus = {}
+    for row in corpus_ds:
+        corpus_id = f"corpus-{split}-{row['corpus-id']}"
+        # Extract image from the dataset row
+        if "image" in row:
+            corpus[corpus_id] = row["image"]
+        elif "page_image" in row:
+            corpus[corpus_id] = row["page_image"]
+        else:
+            raise ValueError(f"No image field found in corpus. Available fields: {list(row.keys())}")
+    
+    # Load qrels (relevance judgments)
+    qrels_ds = load_dataset(dataset_path, "qrels", split=split, revision=revision)
+    
+    qrels = {}
+    for row in qrels_ds:
+        query_id = f"query-{split}-{row['query-id']}"
+        corpus_id = f"corpus-{split}-{row['corpus-id']}"
+        if query_id not in qrels:
+            qrels[query_id] = {}
+        qrels[query_id][corpus_id] = int(row["score"])
+    
+    print(f"Loaded {len(queries)} queries, {len(corpus)} corpus items, {len(qrels)} query-relevance mappings")
+    
+    # Filter qrels to only include queries that exist
+    qrels = {qid: rel_docs for qid, rel_docs in qrels.items() if qid in queries}
+    
+    return corpus, queries, qrels
+
+
+def build_index_from_corpus(
+    corpus: dict[str, Image.Image],
+    model,
+    processor,
+    index_path: str,
+    use_fast_plaid: bool = False,
+    rebuild: bool = False,
+):
+    """
+    Build index from corpus images.
+    
+    Returns:
+        tuple: (retriever or fast_plaid_index object, list of corpus_ids in order)
+    """
+    # Ensure consistent ordering
+    corpus_ids = sorted(corpus.keys())  # Sort for consistency
+    images = [corpus[cid] for cid in corpus_ids]
+    
+    if use_fast_plaid:
+        # Check if Fast-Plaid index exists
+        if not rebuild and _load_fast_plaid_index_if_exists(index_path) is not None:
+            print(f"Fast-Plaid index already exists at {index_path}")
+            return _load_fast_plaid_index_if_exists(index_path), corpus_ids
+        
+        print(f"Building Fast-Plaid index at {index_path}...")
+        
+        # Embed images
+        print("Embedding images...")
+        doc_vecs = _embed_images(model, processor, images)
+        
+        # Build index
+        fast_plaid_index, build_time = _build_fast_plaid_index(
+            index_path, doc_vecs, corpus_ids, images
+        )
+        print(f"Fast-Plaid index built in {build_time:.2f}s")
+        return fast_plaid_index, corpus_ids
+    else:
+        # Check if LEANN index exists
+        if not rebuild:
+            retriever = _load_retriever_if_index_exists(index_path)
+            if retriever is not None:
+                print(f"LEANN index already exists at {index_path}")
+                return retriever, corpus_ids
+        
+        print(f"Building LEANN index at {index_path}...")
+        
+        # Embed images
+        print("Embedding images...")
+        doc_vecs = _embed_images(model, processor, images)
+        
+        # Build index
+        retriever = _build_index(index_path, doc_vecs, corpus_ids, images)
+        print(f"LEANN index built")
+        return retriever, corpus_ids
+
+
+def search_queries(
+    queries: dict[str, str],
+    corpus_ids: list[str],
+    model,
+    processor,
+    index_or_retriever: Any,
+    use_fast_plaid: bool = False,
+    fast_plaid_index_path: Optional[str] = None,
+    top_k: int = 100,
+    first_stage_k: int = 500,
+    task_prompt: Optional[dict[str, str]] = None,
+) -> dict[str, dict[str, float]]:
+    """
+    Search queries against the index.
+    
+    Args:
+        queries: dict mapping query_id to query text
+        corpus_ids: list of corpus_ids in the same order as the index
+        model: model object
+        processor: processor object
+        index_or_retriever: index or retriever object
+        use_fast_plaid: whether using Fast-Plaid
+        fast_plaid_index_path: path to Fast-Plaid index (for metadata)
+        top_k: top-k results to retrieve
+        first_stage_k: first stage k for LEANN search
+        task_prompt: Optional dict with prompt for query (e.g., {"query": "..."})
+    
+    Returns:
+        results: dict mapping query_id to dict of {corpus_id: score}
+    """
+    print(f"Searching {len(queries)} queries (top_k={top_k})...")
+    
+    query_ids = list(queries.keys())
+    query_texts = [queries[qid] for qid in query_ids]
+    
+    # Match MTEB: combine queries with instruction/prompt if provided
+    # MTEB's _combine_queries_with_instruction_text does: query + " " + instruction
+    if task_prompt and "query" in task_prompt:
+        instruction = task_prompt["query"]
+        query_texts = [q + " " + instruction for q in query_texts]
+        print(f"Added task prompt to queries: {instruction}")
+    
+    # Embed queries
+    print("Embedding queries...")
+    query_vecs = _embed_queries(model, processor, query_texts)
+    
+    results = {}
+    
+    for query_id, query_vec in zip(tqdm(query_ids, desc="Searching"), query_vecs):
+        if use_fast_plaid:
+            # Fast-Plaid search
+            search_results, _ = _search_fast_plaid(index_or_retriever, query_vec, top_k)
+            # Convert doc_id back to corpus_id
+            query_results = {}
+            for score, doc_id in search_results:
+                if doc_id < len(corpus_ids):
+                    corpus_id = corpus_ids[doc_id]
+                    query_results[corpus_id] = float(score)
+        else:
+            # LEANN search
+            query_np = query_vec.float().numpy()
+            search_results = index_or_retriever.search_exact_all(query_np, topk=top_k)
+            # Convert doc_id back to corpus_id
+            query_results = {}
+            for score, doc_id in search_results:
+                if doc_id < len(corpus_ids):
+                    corpus_id = corpus_ids[doc_id]
+                    query_results[corpus_id] = float(score)
+        
+        results[query_id] = query_results
+    
+    return results
+
+
+def evaluate_results(
+    results: dict[str, dict[str, float]],
+    qrels: dict[str, dict[str, int]],
+    k_values: list[int] = [1, 3, 5, 10, 100],
+) -> dict[str, float]:
+    """
+    Evaluate retrieval results using NDCG and other metrics.
+    
+    Returns:
+        Dictionary of metric scores
+    """
+    if pytrec_eval is None:
+        raise ImportError("pytrec_eval is required for evaluation. Install with: pip install pytrec-eval")
+    
+    # Check if we have any queries to evaluate
+    if len(results) == 0:
+        print("Warning: No queries to evaluate. Returning zero scores.")
+        # Return zero scores for all metrics
+        scores = {}
+        for k in k_values:
+            scores[f"ndcg_at_{k}"] = 0.0
+            scores[f"map_at_{k}"] = 0.0
+            scores[f"recall_at_{k}"] = 0.0
+            scores[f"precision_at_{k}"] = 0.0
+            scores[f"mrr_at_{k}"] = 0.0
+        return scores
+    
+    print(f"Evaluating results with k_values={k_values}...")
+    
+    # Convert qrels to pytrec_eval format
+    qrels_pytrec = {}
+    for qid, rel_docs in qrels.items():
+        qrels_pytrec[qid] = {did: score for did, score in rel_docs.items()}
+    
+    # Evaluate
+    eval_result = calculate_retrieval_scores(
+        results=results,
+        qrels=qrels_pytrec,
+        k_values=k_values,
+    )
+    
+    # Format scores
+    scores = make_score_dict(
+        ndcg=eval_result.ndcg,
+        _map=eval_result.map,
+        recall=eval_result.recall,
+        precision=eval_result.precision,
+        mrr=eval_result.mrr,
+        naucs=eval_result.naucs,
+        naucs_mrr=eval_result.naucs_mrr,
+        cv_recall=eval_result.cv_recall,
+        task_scores={},
+    )
+    
+    return scores
+
+
+def evaluate_task(
+    task_name: str,
+    model_name: str,
+    index_path: str,
+    use_fast_plaid: bool = False,
+    fast_plaid_index_path: Optional[str] = None,
+    language: Optional[str] = None,
+    rebuild_index: bool = False,
+    top_k: int = 100,
+    first_stage_k: int = 500,
+    k_values: list[int] = [1, 3, 5, 10, 100],
+    output_dir: Optional[str] = None,
+):
+    """
+    Evaluate a single ViDoRe v2 task.
+    """
+    print(f"\n{'='*80}")
+    print(f"Evaluating task: {task_name}")
+    print(f"{'='*80}")
+    
+    # Get task config
+    if task_name not in VIDORE_V2_TASKS:
+        raise ValueError(f"Unknown task: {task_name}. Available: {list(VIDORE_V2_TASKS.keys())}")
+    
+    task_config = VIDORE_V2_TASKS[task_name]
+    dataset_path = task_config["dataset_path"]
+    revision = task_config["revision"]
+    
+    # Determine language
+    if language is None:
+        # Use first language if multiple available
+        languages = task_config.get("languages")
+        if languages is None:
+            # Task doesn't support language filtering (e.g., Vidore2ESGReportsHLRetrieval)
+            language = None
+        elif len(languages) == 1:
+            language = languages[0]
+        else:
+            language = None
+    
+    # Load data
+    corpus, queries, qrels = load_vidore_v2_data(
+        dataset_path=dataset_path,
+        revision=revision,
+        split="test",
+        language=language,
+    )
+    
+    # Check if we have any queries
+    if len(queries) == 0:
+        print(f"\nWarning: No queries found for task {task_name} with language {language}. Skipping evaluation.")
+        # Return zero scores
+        scores = {}
+        for k in k_values:
+            scores[f"ndcg_at_{k}"] = 0.0
+            scores[f"map_at_{k}"] = 0.0
+            scores[f"recall_at_{k}"] = 0.0
+            scores[f"precision_at_{k}"] = 0.0
+            scores[f"mrr_at_{k}"] = 0.0
+        return scores
+    
+    # Load model
+    print(f"\nLoading model: {model_name}")
+    model_name_actual, model, processor, device_str, device, dtype = _load_colvision(model_name)
+    print(f"Model loaded: {model_name_actual}")
+    
+    # Build or load index
+    index_path_full = index_path if not use_fast_plaid else fast_plaid_index_path
+    if index_path_full is None:
+        index_path_full = f"./indexes/{task_name}_{model_name}"
+        if use_fast_plaid:
+            index_path_full = f"./indexes/{task_name}_{model_name}_fastplaid"
+    
+    index_or_retriever, corpus_ids_ordered = build_index_from_corpus(
+        corpus=corpus,
+        model=model,
+        processor=processor,
+        index_path=index_path_full,
+        use_fast_plaid=use_fast_plaid,
+        rebuild=rebuild_index,
+    )
+    
+    # Search queries
+    task_prompt = task_config.get("prompt")
+    results = search_queries(
+        queries=queries,
+        corpus_ids=corpus_ids_ordered,
+        model=model,
+        processor=processor,
+        index_or_retriever=index_or_retriever,
+        use_fast_plaid=use_fast_plaid,
+        fast_plaid_index_path=fast_plaid_index_path,
+        top_k=top_k,
+        first_stage_k=first_stage_k,
+        task_prompt=task_prompt,
+    )
+    
+    # Evaluate
+    scores = evaluate_results(results, qrels, k_values=k_values)
+    
+    # Print results
+    print(f"\n{'='*80}")
+    print(f"Results for {task_name}:")
+    print(f"{'='*80}")
+    for metric, value in scores.items():
+        if isinstance(value, (int, float)):
+            print(f"  {metric}: {value:.5f}")
+    
+    # Save results
+    if output_dir:
+        os.makedirs(output_dir, exist_ok=True)
+        results_file = os.path.join(output_dir, f"{task_name}_results.json")
+        scores_file = os.path.join(output_dir, f"{task_name}_scores.json")
+        
+        with open(results_file, "w") as f:
+            json.dump(results, f, indent=2)
+        print(f"\nSaved results to: {results_file}")
+        
+        with open(scores_file, "w") as f:
+            json.dump(scores, f, indent=2)
+        print(f"Saved scores to: {scores_file}")
+    
+    return scores
+
+
+def main():
+    parser = argparse.ArgumentParser(
+        description="Evaluate ViDoRe v2 benchmark using LEANN/Fast-Plaid indexing"
+    )
+    parser.add_argument(
+        "--model",
+        type=str,
+        default="colqwen2",
+        choices=["colqwen2", "colpali"],
+        help="Model to use",
+    )
+    parser.add_argument(
+        "--task",
+        type=str,
+        default=None,
+        help="Specific task to evaluate (or 'all' for all tasks)",
+    )
+    parser.add_argument(
+        "--tasks",
+        type=str,
+        default="all",
+        help="Tasks to evaluate: 'all' or comma-separated list",
+    )
+    parser.add_argument(
+        "--index-path",
+        type=str,
+        default=None,
+        help="Path to LEANN index (auto-generated if not provided)",
+    )
+    parser.add_argument(
+        "--use-fast-plaid",
+        action="store_true",
+        help="Use Fast-Plaid instead of LEANN",
+    )
+    parser.add_argument(
+        "--fast-plaid-index-path",
+        type=str,
+        default=None,
+        help="Path to Fast-Plaid index (auto-generated if not provided)",
+    )
+    parser.add_argument(
+        "--rebuild-index",
+        action="store_true",
+        help="Rebuild index even if it exists",
+    )
+    parser.add_argument(
+        "--language",
+        type=str,
+        default=None,
+        help="Language to evaluate (default: first available)",
+    )
+    parser.add_argument(
+        "--top-k",
+        type=int,
+        default=100,
+        help="Top-k results to retrieve",
+    )
+    parser.add_argument(
+        "--first-stage-k",
+        type=int,
+        default=500,
+        help="First stage k for LEANN search",
+    )
+    parser.add_argument(
+        "--k-values",
+        type=str,
+        default="1,3,5,10,100",
+        help="Comma-separated k values for evaluation (e.g., '1,3,5,10,100')",
+    )
+    parser.add_argument(
+        "--output-dir",
+        type=str,
+        default="./vidore_v2_results",
+        help="Output directory for results",
+    )
+    
+    args = parser.parse_args()
+    
+    # Parse k_values
+    k_values = [int(k.strip()) for k in args.k_values.split(",")]
+    
+    # Determine tasks to evaluate
+    if args.task:
+        tasks_to_eval = [args.task]
+    elif args.tasks.lower() == "all":
+        tasks_to_eval = list(VIDORE_V2_TASKS.keys())
+    else:
+        tasks_to_eval = [t.strip() for t in args.tasks.split(",")]
+    
+    print(f"Tasks to evaluate: {tasks_to_eval}")
+    
+    # Evaluate each task
+    all_scores = {}
+    for task_name in tasks_to_eval:
+        try:
+            scores = evaluate_task(
+                task_name=task_name,
+                model_name=args.model,
+                index_path=args.index_path,
+                use_fast_plaid=args.use_fast_plaid,
+                fast_plaid_index_path=args.fast_plaid_index_path,
+                language=args.language,
+                rebuild_index=args.rebuild_index,
+                top_k=args.top_k,
+                first_stage_k=args.first_stage_k,
+                k_values=k_values,
+                output_dir=args.output_dir,
+            )
+            all_scores[task_name] = scores
+        except Exception as e:
+            print(f"\nError evaluating {task_name}: {e}")
+            import traceback
+            traceback.print_exc()
+            continue
+    
+    # Print summary
+    if all_scores:
+        print(f"\n{'='*80}")
+        print("SUMMARY")
+        print(f"{'='*80}")
+        for task_name, scores in all_scores.items():
+            print(f"\n{task_name}:")
+            # Print main metrics
+            for metric in ["ndcg_at_5", "ndcg_at_10", "ndcg_at_100", "map_at_10", "recall_at_10"]:
+                if metric in scores:
+                    print(f"  {metric}: {scores[metric]:.5f}")
+
+
+if __name__ == "__main__":
+    main()
+