ecpfs stores one representation of each vector per index. This project adds the ability to store more than one, full vectors, PCA-reduced vectors, or both, and lets you choose which representation gets used at which point in the search: for routing, for final ranking, or both. Once that capability exists, the real question is what combinations are actually worth it: when does keeping a second …
Supervisor: Omar Shahbaz Khan
Semester: Spring 2027
Tags: ann-index, vector store, pca, data management

Constrastive learning models have made it easier to find relevant content from multimedia collections through descriptive text queries, reducing the interactivity needed to solve simple tasks. However, for complex tasks not only pertaining visual elements, or tasks focused on answering questions involving the contents of a singular or multiple media items (videos/images) still requires a fair …
Supervisor: Omar Shahbaz Khan
Semester: Spring 2026
Tags: Multimedia Retrieval, VLM, RAG, Vector Store, Multimedia Indexing

The extended Cluster Pruning (eCP) index, is a hierarchical approximate nearest neighbor index. eCP-FS is a “white-box” implementation of the index as a file structure using zarr. The index building is done through Python, while the index loading and search have been implemented in both pure Python and a Rust-Python package. While the index is slower from disk than other disk-based ANN …
Supervisor: Omar Shahbaz Khan
Semester: Fall 2026
Tags: High-dimensional Indexing, Vector Store, Rust, Python, Approximate Nearest Neighbor