Search Results for author: Pankaj Gupta

Found 31 papers, 19 papers with code

FocusMAE: Gallbladder Cancer Detection from Ultrasound Videos with Focused Masked Autoencoders

1 code implementation13 Mar 2024 Soumen Basu, Mayuna Gupta, Chetan Madan, Pankaj Gupta, Chetan Arora

We validate the proposed methods on the curated dataset, and report a new state-of-the-art (SOTA) accuracy of 96. 4% for the GBC detection problem, against an accuracy of 84% by current Image-based SOTA - GBCNet, and RadFormer, and 94. 7% by Video-based SOTA - AdaMAE.

Gallbladder Cancer Detection Representation Learning

SEPSIS: I Can Catch Your Lies -- A New Paradigm for Deception Detection

no code implementations1 Dec 2023 Anku Rani, Dwip Dalal, Shreya Gautam, Pankaj Gupta, Vinija Jain, Aman Chadha, Amit Sheth, Amitava Das

This research explores the problem of deception through the lens of psychology, employing a framework that categorizes deception into three forms: lies of omission, lies of commission, and lies of influence.

Deception Detection Multi-Task Learning

Gall Bladder Cancer Detection from US Images with Only Image Level Labels

no code implementations11 Sep 2023 Soumen Basu, Ashish Papanai, Mayank Gupta, Pankaj Gupta, Chetan Arora

We posit that even when we have only the image level label, still formulating the problem as object detection (with bounding box output) helps a deep neural network (DNN) model focus on the relevant region of interest.

Image Classification Object +2

Adversarial Adaptation for French Named Entity Recognition

1 code implementation12 Jan 2023 Arjun Choudhry, Inder Khatri, Pankaj Gupta, Aaryan Gupta, Maxime Nicol, Marie-Jean Meurs, Dinesh Kumar Vishwakarma

We propose a Transformer-based NER approach for French, using adversarial adaptation to similar domain or general corpora to improve feature extraction and enable better generalization.

named-entity-recognition Named Entity Recognition +1

Federated Continual Learning for Text Classification via Selective Inter-client Transfer

1 code implementation12 Oct 2022 Yatin Chaudhary, Pranav Rai, Matthias Schubert, Hinrich Schütze, Pankaj Gupta

The objective of Federated Continual Learning (FCL) is to improve deep learning models over life time at each client by (relevant and efficient) knowledge transfer without sharing data.

Continual Learning Federated Learning +3

Unsupervised Contrastive Learning of Image Representations from Ultrasound Videos with Hard Negative Mining

1 code implementation26 Jul 2022 Soumen Basu, Somanshu Singla, Mayank Gupta, Pratyaksha Rana, Pankaj Gupta, Chetan Arora

We further validate the generalizability of our method on a publicly available lung US image dataset of COVID-19 pathologies and show an improvement of 1. 5% compared to SOTA.

Contrastive Learning

Multi-source Neural Topic Modeling in Multi-view Embedding Spaces

1 code implementation NAACL 2021 Pankaj Gupta, Yatin Chaudhary, Hinrich Schütze

Though word embeddings and topics are complementary representations, several past works have only used pretrained word embeddings in (neural) topic modeling to address data sparsity in short-text or small collection of documents.

Information Retrieval Retrieval +1

Neural Topic Modeling with Continual Lifelong Learning

1 code implementation ICML 2020 Pankaj Gupta, Yatin Chaudhary, Thomas Runkler, Hinrich Schütze

To address the problem, we propose a lifelong learning framework for neural topic modeling that can continuously process streams of document collections, accumulate topics and guide future topic modeling tasks by knowledge transfer from several sources to better deal with the sparse data.

Data Augmentation Information Retrieval +2

Explainable and Discourse Topic-aware Neural Language Understanding

1 code implementation ICML 2020 Yatin Chaudhary, Hinrich Schütze, Pankaj Gupta

Marrying topic models and language models exposes language understanding to a broader source of document-level context beyond sentences via topics.

Document Classification Language Modelling +5

Lifelong Neural Topic Learning in Contextualized Autoregressive Topic Models of Language via Informative Transfers

no code implementations29 Sep 2019 Yatin Chaudhary, Pankaj Gupta, Thomas Runkler

in topic modeling, (2) A novel lifelong learning mechanism into neural topic modeling framework to demonstrate continuous learning in sequential document collections and minimizing catastrophic forgetting.

Data Augmentation Hallucination +2

Multi-source Multi-view Transfer Learning in Neural Topic Modeling with Pretrained Topic and Word Embeddings

no code implementations25 Sep 2019 Pankaj Gupta, Yatin Chaudhary, Hinrich Schütze

Though word embeddings and topics are complementary representations, several past works have only used pretrained word embeddings in (neural) topic modeling to address data sparsity problem in short text or small collection of documents.

Information Retrieval Retrieval +2

Multi-view and Multi-source Transfers in Neural Topic Modeling with Pretrained Topic and Word Embeddings

no code implementations14 Sep 2019 Pankaj Gupta, Yatin Chaudhary, Hinrich Schütze

Though word embeddings and topics are complementary representations, several past works have only used pre-trained word embeddings in (neural) topic modeling to address data sparsity problem in short text or small collection of documents.

Information Retrieval Retrieval +2

Neural Architectures for Fine-Grained Propaganda Detection in News

no code implementations WS 2019 Pankaj Gupta, Khushbu Saxena, Usama Yaseen, Thomas Runkler, Hinrich Schütze

To address the tasks of sentence (SLC) and fragment level (FLC) propaganda detection, we explore different neural architectures (e. g., CNN, LSTM-CRF and BERT) and extract linguistic (e. g., part-of-speech, named entity, readability, sentiment, emotion, etc.

Propaganda detection Sentence

Neural Relation Extraction Within and Across Sentence Boundaries

1 code implementation11 Oct 2018 Pankaj Gupta, Subburam Rajaram, Hinrich Schütze, Bernt Andrassy, Thomas Runkler

iDepNN models the shortest and augmented dependency paths via recurrent and recursive neural networks to extract relationships within (intra-) and across (inter-) sentence boundaries.

Relation Relation Extraction +1

textTOvec: Deep Contextualized Neural Autoregressive Topic Models of Language with Distributed Compositional Prior

1 code implementation ICLR 2019 Pankaj Gupta, Yatin Chaudhary, Florian Buettner, Hinrich Schütze

We address two challenges of probabilistic topic modelling in order to better estimate the probability of a word in a given context, i. e., P(word|context): (1) No Language Structure in Context: Probabilistic topic models ignore word order by summarizing a given context as a "bag-of-word" and consequently the semantics of words in the context is lost.

Information Extraction Information Retrieval +4

Document Informed Neural Autoregressive Topic Models with Distributional Prior

1 code implementation15 Sep 2018 Pankaj Gupta, Yatin Chaudhary, Florian Buettner, Hinrich Schütze

Here, we extend a neural autoregressive topic model to exploit the full context information around words in a document in a language modeling fashion.

Language Modelling Retrieval +1

Document Informed Neural Autoregressive Topic Models

1 code implementation11 Aug 2018 Pankaj Gupta, Florian Buettner, Hinrich Schütze

Context information around words helps in determining their actual meaning, for example "networks" used in contexts of artificial neural networks or biological neuron networks.

Language Modelling Retrieval +2

LISA: Explaining Recurrent Neural Network Judgments via Layer-wIse Semantic Accumulation and Example to Pattern Transformation

no code implementations WS 2018 Pankaj Gupta, Hinrich Schütze

Recurrent neural networks (RNNs) are temporal networks and cumulative in nature that have shown promising results in various natural language processing tasks.

Decision Making Relation Classification +2

Replicated Siamese LSTM in Ticketing System for Similarity Learning and Retrieval in Asymmetric Texts

no code implementations COLING 2018 Pankaj Gupta, Bernt Andrassy, Hinrich Schütze

The task is challenging due to significant term mismatch in the query and ticket pairs of asymmetric lengths, where subject is a short text but description and solution are multi-sentence texts.

Retrieval Sentence

Deep Temporal-Recurrent-Replicated-Softmax for Topical Trends over Time

no code implementations NAACL 2018 Pankaj Gupta, Subburam Rajaram, Hinrich Schütze, Bernt Andrassy

We also introduce a metric (named as SPAN) to quantify the capability of dynamic topic model to capture word evolution in topics over time.

Dynamic Topic Modeling

What are the visual features underlying human versus machine vision?

no code implementations10 Jan 2017 Drew Linsley, Sven Eberhardt, Tarun Sharma, Pankaj Gupta, Thomas Serre

Our study demonstrates that the narrowing gap between the object recognition accuracy of human observers and DCNs obscures distinct visual strategies used by each to achieve this performance.

Object Object Recognition

Table Filling Multi-Task Recurrent Neural Network for Joint Entity and Relation Extraction

1 code implementation COLING 2016 Pankaj Gupta, Hinrich Sch{\"u}tze, Bernt Andrassy

This paper proposes a novel context-aware joint entity and word-level relation extraction approach through semantic composition of words, introducing a Table Filling Multi-Task Recurrent Neural Network (TF-MTRNN) model that reduces the entity recognition and relation classification tasks to a table-filling problem and models their interdependencies.

Classification Entity Extraction using GAN +7

Combining Recurrent and Convolutional Neural Networks for Relation Classification

no code implementations NAACL 2016 Ngoc Thang Vu, Heike Adel, Pankaj Gupta, Hinrich Schütze

This paper investigates two different neural architectures for the task of relation classification: convolutional neural networks and recurrent neural networks.

Classification General Classification +2

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