activity
20212025
most citedFlow-based Spatio-Temporal Structured Prediction of Motion Dynamics

11 citations · 19 across the 17 of their papers we have counts for

collaborators

17 papers

cs.LG2025

Learning Time-Series Representations by Hierarchical Uniformity-Tolerance Latent Balancing

Amin Jalali, Milad Soltany, Michael Greenspan +1

We propose TimeHUT, a novel method for learning time-series representations by hierarchical uniformity-tolerance balancing of contrastive representations. Our method uses two disti…

cs.CV2025

PRISM: Reducing Spurious Implicit Biases in Vision-Language Models with LLM-Guided Embedding Projection

Mahdiyar Molahasani, Azadeh Motamedi, Michael Greenspan +2

We introduce Projection-based Reduction of Implicit Spurious bias in vision-language Models (PRISM), a new data-free and task-agnostic solution for bias mitigation in VLMs like CLI…

cs.CV2024

Socially-Informed Reconstruction for Pedestrian Trajectory Forecasting

Haleh Damirchi, Ali Etemad, Michael Greenspan

Pedestrian trajectory prediction remains a challenge for autonomous systems, particularly due to the intricate dynamics of social interactions. Accurate forecasting requires a comp…

cs.LG2024

Federated Domain Generalization with Label Smoothing and Balanced Decentralized Training

Milad Soltany, Farhad Pourpanah, Mahdiyar Molahasani +2

In this paper, we propose a novel approach, Federated Domain Generalization with Label Smoothing and Balanced Decentralized Training (FedSB), to address the challenges of data hete…

cs.CV2024

CycleCrash: A Dataset of Bicycle Collision Videos for Collision Prediction and Analysis

Nishq Poorav Desai, Ali Etemad, Michael Greenspan

Self-driving research often underrepresents cyclist collisions and safety. To address this, we present CycleCrash, a novel dataset consisting of 3,000 dashcam videos with 436,347 f…

cs.LG2024

Federated Unsupervised Domain Generalization using Global and Local Alignment of Gradients

Farhad Pourpanah, Mahdiyar Molahasani, Milad Soltany +2

We address the problem of federated domain generalization in an unsupervised setting for the first time. We first theoretically establish a connection between domain shift and alig…

cs.CV2023★ 2 cited

Diffusion Models with Deterministic Normalizing Flow Priors

Mohsen Zand, Ali Etemad, Michael Greenspan

For faster sampling and higher sample quality, we propose DiNof (ffusion with rmalizing low priors), a technique that makes use of normalizing…

cs.CV2023

Multiscale Residual Learning of Graph Convolutional Sequence Chunks for Human Motion Prediction

Mohsen Zand, Ali Etemad, Michael Greenspan

A new method is proposed for human motion prediction by learning temporal and spatial dependencies. Recently, multiscale graphs have been developed to model the human body at highe…

cs.CV2023

Learning Better Keypoints for Multi-Object 6DoF Pose Estimation

Yangzheng Wu, Michael Greenspan

We address the problem of keypoint selection, and find that the performance of 6DoF pose estimation methods can be improved when pre-defined keypoint locations are learned, rather…

cs.CV2023★ 1 cited

Context-aware Pedestrian Trajectory Prediction with Multimodal Transformer

Haleh Damirchi, Michael Greenspan, Ali Etemad

We propose a novel solution for predicting future trajectories of pedestrians. Our method uses a multimodal encoder-decoder transformer architecture, which takes as input both pede…

cs.CV2023

Continual Learning for Out-of-Distribution Pedestrian Detection

Mahdiyar Molahasani, Ali Etemad, Michael Greenspan

A continual learning solution is proposed to address the out-of-distribution generalization problem for pedestrian detection. While recent pedestrian detection models have achieved…

cs.LG2023★ 3 cited

On The Relationship Between Continual Learning and Long-Tailed Recognition

Mahdiyar Molahasani, Michael Greenspan, Ali Etemad

Real-world datasets often exhibit long-tailed distributions, where a few dominant "Head" classes have abundant samples while most "Tail" classes are severely underrepresented, lead…

cs.CV2023

Diffusion Dataset Generation: Towards Closing the Sim2Real Gap for Pedestrian Detection

Andrew Farley, Mohsen Zand, Michael Greenspan

We propose a method that augments a simulated dataset using diffusion models to improve the performance of pedestrian detection in real-world data. The high cost of collecting and…

cs.CV2022

Keypoint Cascade Voting for Point Cloud Based 6DoF Pose Estimation

Yangzheng Wu, Alireza Javaheri, Mohsen Zand +1

We propose a novel keypoint voting 6DoF object pose estimation method, which takes pure unordered point cloud geometry as input without RGB information. The proposed cascaded keypo…

cs.CV2022★ 2 cited

ObjectBox: From Centers to Boxes for Anchor-Free Object Detection

Mohsen Zand, Ali Etemad, Michael Greenspan

We present ObjectBox, a novel single-stage anchor-free and highly generalizable object detection approach. As opposed to both existing anchor-based and anchor-free detectors, which…

cs.CL2022

Neuro-symbolic Natural Logic with Introspective Revision for Natural Language Inference

Yufei Feng, Xiaoyu Yang, Xiaodan Zhu +1

We introduce a neuro-symbolic natural logic framework based on reinforcement learning with introspective revision. The model samples and rewards specific reasoning paths through po…

cs.CV2021★ 11 cited

Flow-based Spatio-Temporal Structured Prediction of Motion Dynamics

Mohsen Zand, Ali Etemad, Michael Greenspan

Conditional Normalizing Flows (CNFs) are flexible generative models capable of representing complicated distributions with high dimensionality and large interdimensional correlatio…