Search Results for author: Soumitri Chattopadhyay

Found 10 papers, 3 papers with code

Active Learning for Fine-Grained Sketch-Based Image Retrieval

no code implementations15 Sep 2023 Himanshu Thakur, Soumitri Chattopadhyay

The ability to retrieve a photo by mere free-hand sketching highlights the immense potential of Fine-grained sketch-based image retrieval (FG-SBIR).

Active Learning Retrieval +1

DySTreSS: Dynamically Scaled Temperature in Self-Supervised Contrastive Learning

no code implementations2 Aug 2023 Siladittya Manna, Soumitri Chattopadhyay, Rakesh Dey, Saumik Bhattacharya, Umapada Pal

We propose a cosine similarity-dependent temperature scaling function to effectively optimize the distribution of the samples in the feature space.

Contrastive Learning

BeAts: Bengali Speech Acts Recognition using Multimodal Attention Fusion

no code implementations5 Jun 2023 Ahana Deb, Sayan Nag, Ayan Mahapatra, Soumitri Chattopadhyay, Aritra Marik, Pijush Kanti Gayen, Shankha Sanyal, Archi Banerjee, Samir Karmakar

Spoken languages often utilise intonation, rhythm, intensity, and structure, to communicate intention, which can be interpreted differently depending on the rhythm of speech of their utterance.

Exploiting Unlabelled Photos for Stronger Fine-Grained SBIR

no code implementations CVPR 2023 Aneeshan Sain, Ayan Kumar Bhunia, Subhadeep Koley, Pinaki Nath Chowdhury, Soumitri Chattopadhyay, Tao Xiang, Yi-Zhe Song

This paper advances the fine-grained sketch-based image retrieval (FG-SBIR) literature by putting forward a strong baseline that overshoots prior state-of-the-arts by ~11%.

Knowledge Distillation Sketch-Based Image Retrieval

An Evaluation of Non-Contrastive Self-Supervised Learning for Federated Medical Image Analysis

no code implementations9 Mar 2023 Soumitri Chattopadhyay, Soham Ganguly, Sreejit Chaudhury, Sayan Nag, Samiran Chattopadhyay

In this paper, we seek to tackle these concerns head-on and systematically explore the applicability of non-contrastive self-supervised learning (SSL) algorithms under federated learning (FL) simulations for medical image analysis.

Contrastive Learning Federated Learning +1

IDEAL: Improved DEnse locAL Contrastive Learning for Semi-Supervised Medical Image Segmentation

1 code implementation26 Oct 2022 Hritam Basak, Soumitri Chattopadhyay, Rohit Kundu, Sayan Nag, Rammohan Mallipeddi

To this end, we extend the concept of metric learning to the segmentation task, using a dense (dis)similarity learning for pre-training a deep encoder network, and employing a semi-supervised paradigm to fine-tune for the downstream task.

Contrastive Learning Image Segmentation +6

SWIS: Self-Supervised Representation Learning For Writer Independent Offline Signature Verification

no code implementations26 Feb 2022 Siladittya Manna, Soumitri Chattopadhyay, Saumik Bhattacharya, Umapada Pal

Writer independent offline signature verification is one of the most challenging tasks in pattern recognition as there is often a scarcity of training data.

Representation Learning Self-Supervised Learning

A Brief Overview of Physics-inspired Metaheuristic Optimization Techniques

no code implementations30 Jan 2022 Soumitri Chattopadhyay, Aritra Marik, Rishav Pramanik

Metaheuristic algorithms are methods devised to efficiently solve computationally challenging optimization problems.

Metaheuristic Optimization

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