4 papers
Concord: A Video Relational Algebra for Cross-Modal Query Optimization
Sultan Muratbek, Charisse Ivana Yeung, Chanwut Kittivorawong +1
Semantic video queries let users embed natural language prompts and use multimodal large language models (MLLMs) to interpret the video. Such queries are increasingly popular for q…
Tetris: Tile-level Sampling for Efficient and High-Fidelity Video Object Tracking
Chanwut Kittivorawong, Alena Chao, Charlie Si +1
Track materialization converts raw videos into reusable object tracks that downstream queries can run against without rerunning tracking, but extracting those tracks efficiently an…
Flo: a Semantic Foundation for Progressive Stream Processing
Shadaj Laddad, Alvin Cheung, Joseph M. Hellerstein +1
Streaming systems are present throughout modern applications, processing continuous data in real-time. Existing streaming languages have a variety of semantic models and guarantees…
Suki: Choreographed Distributed Dataflow in Rust
Shadaj Laddad, Alvin Cheung, Joseph M. Hellerstein
Programming models for distributed dataflow have long focused on analytical workloads that allow the runtime to dynamically place and schedule compute logic. Meanwhile, models that…