activity
20132026
most citedCompact Random Feature Maps

60 citations · 79 across the 13 of their papers we have counts for

collaborators

14 papers

cs.CV2026

MemLife: Curating and Reasoning over Long-Term Egocentric Video Memories

Guangzhi Xiong, Xinyuan Zhang, Xiao Yang +14

Long-term egocentric video enables personalized AI assistants to reason about daily life. However, as video histories grow to hundreds of hours spanning months or years, reprocessi…

cs.CL2026

SaliMory: Orchestrating Cognitive Memory for Conversational Agents

Kai Zhang, Xinyuan Zhang, Hongda Jiang +11

Conversational agents that serve as lifelong companions must maintain persistent memory across all interactions. However, simply expanding context windows with raw retrieval degrad…

cs.CV2025

M-LLM Based Video Frame Selection for Efficient Video Understanding

Kai Hu, Feng Gao, Xiaohan Nie +8

Recent advances in Multi-Modal Large Language Models (M-LLMs) show promising results in video reasoning. Popular Multi-Modal Large Language Model (M-LLM) frameworks usually apply n…

cs.CV2025

CoLLM: A Large Language Model for Composed Image Retrieval

Chuong Huynh, Jinyu Yang, Ashish Tawari +5

Composed Image Retrieval (CIR) is a complex task that aims to retrieve images based on a multimodal query. Typical training data consists of triplets containing a reference image,…

cs.CV2023★ 2 cited

LEMaRT: Label-Efficient Masked Region Transform for Image Harmonization

Sheng Liu, Cong Phuoc Huynh, Cong Chen +2

We present a simple yet effective self-supervised pre-training method for image harmonization which can leverage large-scale unannotated image datasets. To achieve this goal, we fi…

cs.CV2023★ 3 cited

Selective Structured State-Spaces for Long-Form Video Understanding

Jue Wang, Wentao Zhu, Pichao Wang +4

Effective modeling of complex spatiotemporal dependencies in long-form videos remains an open problem. The recently proposed Structured State-Space Sequence (S4) model with its lin…

cs.CV2022

Scalable Temporal Localization of Sensitive Activities in Movies and TV Episodes

Xiang Hao, Jingxiang Chen, Shixing Chen +2

To help customers make better-informed viewing choices, video-streaming services try to moderate their content and provide more visibility into which portions of their movies and T…

cs.CV2022★ 6 cited

Robust Cross-Modal Representation Learning with Progressive Self-Distillation

Alex Andonian, Shixing Chen, Raffay Hamid

The learning objective of vision-language approach of CLIP does not effectively account for the noisy many-to-many correspondences found in web-harvested image captioning datasets,…

cs.CV2022★ 2 cited

Depth-Guided Sparse Structure-from-Motion for Movies and TV Shows

Sheng Liu, Xiaohan Nie, Raffay Hamid

Existing approaches for Structure from Motion (SfM) produce impressive 3-D reconstruction results especially when using imagery captured with large parallax. However, to create eng…

cs.CV2022★ 1 cited

Movies2Scenes: Using Movie Metadata to Learn Scene Representation

Shixing Chen, Chun-Hao Liu, Xiang Hao +3

Understanding scenes in movies is crucial for a variety of applications such as video moderation, search, and recommendation. However, labeling individual scenes is a time-consumin…

cs.CV2021★ 4 cited

Shot Contrastive Self-Supervised Learning for Scene Boundary Detection

Shixing Chen, Xiaohan Nie, David Fan +3

Scenes play a crucial role in breaking the storyline of movies and TV episodes into semantically cohesive parts. However, given their complex temporal structure, finding scene boun…

cs.CV2014★ 1 cited

Fast Approximate Matching of Cell-Phone Videos for Robust Background Subtraction

Raffay Hamid, Atish Das Sarma, Dennis DeCoste +1

We identify a novel instance of the background subtraction problem that focuses on extracting near-field foreground objects captured using handheld cameras. Given two user-generate…

cs.LG2014

piCholesky: Polynomial Interpolation of Multiple Cholesky Factors for Efficient Approximate Cross-Validation

Da Kuang, Alex Gittens, Raffay Hamid

The dominant cost in solving least-square problems using Newton's method is often that of factorizing the Hessian matrix over multiple values of the regularization parameter ().…

stat.ML2013★ 60 cited

Compact Random Feature Maps

Raffay Hamid, Ying Xiao, Alex Gittens +1

Kernel approximation using randomized feature maps has recently gained a lot of interest. In this work, we identify that previous approaches for polynomial kernel approximation cre…