Search Results for author: Mahdi Biparva

Found 13 papers, 3 papers with code

WERank: Towards Rank Degradation Prevention for Self-Supervised Learning Using Weight Regularization

no code implementations14 Feb 2024 Ali Saheb Pasand, Reza Moravej, Mahdi Biparva, Ali Ghodsi

A common phenomena confining the representation quality in Self-Supervised Learning (SSL) is dimensional collapse (also known as rank degeneration), where the learned representations are mapped to a low dimensional subspace of the representation space.

Data Augmentation Self-Supervised Learning

Scalable Graph Self-Supervised Learning

no code implementations14 Feb 2024 Ali Saheb Pasand, Reza Moravej, Mahdi Biparva, Raika Karimi, Ali Ghodsi

Our experiments demonstrate that the cost associated with the loss computation can be reduced via node or dimension sampling without lowering the downstream performance.

Self-Supervised Learning

ExGRG: Explicitly-Generated Relation Graph for Self-Supervised Representation Learning

no code implementations9 Feb 2024 Mahdi Naseri, Mahdi Biparva

Self-supervised Learning (SSL) has emerged as a powerful technique in pre-training deep learning models without relying on expensive annotated labels, instead leveraging embedded signals in unlabeled data.

Data Augmentation Graph Generation +4

Todyformer: Towards Holistic Dynamic Graph Transformers with Structure-Aware Tokenization

no code implementations2 Feb 2024 Mahdi Biparva, Raika Karimi, Faezeh Faez, Yingxue Zhang

Furthermore, we illustrate the underlying aspects of the proposed model in effectively capturing extensive temporal dependencies in dynamic graphs.

DyG2Vec: Efficient Representation Learning for Dynamic Graphs

2 code implementations30 Oct 2022 Mohammad Ali Alomrani, Mahdi Biparva, Yingxue Zhang, Mark Coates

Temporal graph neural networks have shown promising results in learning inductive representations by automatically extracting temporal patterns.

Dynamic Link Prediction Dynamic Node Classification +2

Video action recognition for lane-change classification and prediction of surrounding vehicles

no code implementations13 Jan 2021 Mahdi Biparva, David Fernández-Llorca, Rubén Izquierdo-Gonzalo, John K. Tsotsos

Up to four different two-stream-based approaches, that have been successfully applied to address human action recognition, are adapted here by stacking visual cues from forward-looking video cameras to recognize and anticipate lane-changes of target vehicles.

Action Recognition Autonomous Vehicles +2

Contextual Interference Reduction by Selective Fine-Tuning of Neural Networks

no code implementations21 Nov 2020 Mahdi Biparva, John Tsotsos

We study the role of the context on interfering with a disentangled foreground target object representation in this work.

Disentanglement

Two-Stream Networks for Lane-Change Prediction of Surrounding Vehicles

no code implementations25 Aug 2020 David Fernández-Llorca, Mahdi Biparva, Rubén Izquierdo-Gonzalo, John K. Tsotsos

Different sizes of the regions around the vehicles are analyzed, evaluating the importance of the interaction between vehicles and the context information in the performance.

Action Recognition Temporal Action Localization +1

Compact Neural Representation Using Attentive Network Pruning

no code implementations10 May 2020 Mahdi Biparva, John Tsotsos

Network parameter reduction methods have been introduced to systematically deal with the computational and memory complexity of deep networks.

Network Pruning

Selective Segmentation Networks Using Top-Down Attention

no code implementations4 Feb 2020 Mahdi Biparva, John Tsotsos

Convolutional neural networks model the transformation of the input sensory data at the bottom of a network hierarchy to the semantic information at the top of the visual hierarchy.

Object Recognition Segmentation +1

Priming Neural Networks

1 code implementation16 Nov 2017 Amir Rosenfeld, Mahdi Biparva, John K. Tsotsos

This process has been shown to be an effect of top-down signaling in the visual system triggered by the said cue.

Object object-detection +2

STNet: Selective Tuning of Convolutional Networks for Object Localization

no code implementations21 Aug 2017 Mahdi Biparva, John Tsotsos

Visual attention modeling has recently gained momentum in developing visual hierarchies provided by Convolutional Neural Networks.

Object Object Localization

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