Search Results for author: Balaji Krishnamurthy

Found 62 papers, 21 papers with code

CABINET: Content Relevance based Noise Reduction for Table Question Answering

1 code implementation2 Feb 2024 Sohan Patnaik, Heril Changwal, Milan Aggarwal, Sumit Bhatia, Yaman Kumar, Balaji Krishnamurthy

Typically, only a small part of the whole table is relevant to derive the answer for a given question.

 Ranked #1 on Semantic Parsing on WikiSQL (Denotation accuracy (test) metric)

In-Context Learning Question Answering +1

Behavior Optimized Image Generation

no code implementations18 Nov 2023 Varun Khurana, Yaman K Singla, Jayakumar Subramanian, Rajiv Ratn Shah, Changyou Chen, Zhiqiang Xu, Balaji Krishnamurthy

We show that BoigLLM outperforms 13x larger models such as GPT-3. 5 and GPT-4 in this task, demonstrating that while these state-of-the-art models can understand images, they lack information on how these images perform in the real world.

Image Generation Marketing

All Should Be Equal in the Eyes of Language Models: Counterfactually Aware Fair Text Generation

no code implementations9 Nov 2023 Pragyan Banerjee, Abhinav Java, Surgan Jandial, Simra Shahid, Shaz Furniturewala, Balaji Krishnamurthy, Sumit Bhatia

Fairness in Language Models (LMs) remains a longstanding challenge, given the inherent biases in training data that can be perpetuated by models and affect the downstream tasks.

Fairness Language Modelling +1

Long-Term Ad Memorability: Understanding and Generating Memorable Ads

no code implementations1 Sep 2023 Harini S I, Somesh Singh, Yaman K Singla, Aanisha Bhattacharyya, Veeky Baths, Changyou Chen, Rajiv Ratn Shah, Balaji Krishnamurthy

Finally, with the intent of memorable ad generation, we present a scalable method to build a high-quality memorable ad generation model by leveraging automatically annotated data.

Language Modelling Marketing +1

LOCATE: Self-supervised Object Discovery via Flow-guided Graph-cut and Bootstrapped Self-training

1 code implementation22 Aug 2023 Silky Singh, Shripad Deshmukh, Mausoom Sarkar, Balaji Krishnamurthy

We demonstrate the effectiveness of our approach, named LOCATE, on multiple standard video object segmentation, image saliency detection, and object segmentation benchmarks, achieving results on par with and, in many cases surpassing state-of-the-art methods.

Object Object Discovery +5

FODVid: Flow-guided Object Discovery in Videos

no code implementations10 Jul 2023 Silky Singh, Shripad Deshmukh, Mausoom Sarkar, Rishabh Jain, Mayur Hemani, Balaji Krishnamurthy

Segmentation of objects in a video is challenging due to the nuances such as motion blurring, parallax, occlusions, changes in illumination, etc.

Object Object Discovery +5

SARC: Soft Actor Retrospective Critic

1 code implementation28 Jun 2023 Sukriti Verma, Ayush Chopra, Jayakumar Subramanian, Mausoom Sarkar, Nikaash Puri, Piyush Gupta, Balaji Krishnamurthy

The two-time scale nature of SAC, which is an actor-critic algorithm, is characterised by the fact that the critic estimate has not converged for the actor at any given time, but since the critic learns faster than the actor, it ensures eventual consistency between the two.

HyHTM: Hyperbolic Geometry based Hierarchical Topic Models

1 code implementation16 May 2023 Simra Shahid, Tanay Anand, Nikitha Srikanth, Sumit Bhatia, Balaji Krishnamurthy, Nikaash Puri

We present HyHTM - a Hyperbolic geometry based Hierarchical Topic Models - that addresses these limitations by incorporating hierarchical information from hyperbolic geometry to explicitly model hierarchies in topic models.

Topic Models

INGENIOUS: Using Informative Data Subsets for Efficient Pre-Training of Language Models

no code implementations11 May 2023 H S V N S Kowndinya Renduchintala, KrishnaTeja Killamsetty, Sumit Bhatia, Milan Aggarwal, Ganesh Ramakrishnan, Rishabh Iyer, Balaji Krishnamurthy

A salient characteristic of pre-trained language models (PTLMs) is a remarkable improvement in their generalization capability and emergence of new capabilities with increasing model capacity and pre-training dataset size.

Explaining RL Decisions with Trajectories

1 code implementation6 May 2023 Shripad Vilasrao Deshmukh, Arpan Dasgupta, Balaji Krishnamurthy, Nan Jiang, Chirag Agarwal, Georgios Theocharous, Jayakumar Subramanian

To do so, we encode trajectories in offline training data individually as well as collectively (encoding a set of trajectories).

Attribute Continuous Control +3

Synthesizing Human Gaze Feedback for Improved NLP Performance

no code implementations11 Feb 2023 Varun Khurana, Yaman Kumar Singla, Nora Hollenstein, Rajesh Kumar, Balaji Krishnamurthy

Feedback can be either explicit (e. g. ranking used in training language models) or implicit (e. g. using human cognitive signals in the form of eyetracking).

Towards Estimating Transferability using Hard Subsets

no code implementations17 Jan 2023 Tarun Ram Menta, Surgan Jandial, Akash Patil, Vimal KB, Saketh Bachu, Balaji Krishnamurthy, Vineeth N. Balasubramanian, Chirag Agarwal, Mausoom Sarkar

As transfer learning techniques are increasingly used to transfer knowledge from the source model to the target task, it becomes important to quantify which source models are suitable for a given target task without performing computationally expensive fine tuning.

Transfer Learning

Distilling the Undistillable: Learning from a Nasty Teacher

1 code implementation21 Oct 2022 Surgan Jandial, Yash Khasbage, Arghya Pal, Vineeth N Balasubramanian, Balaji Krishnamurthy

The inadvertent stealing of private/sensitive information using Knowledge Distillation (KD) has been getting significant attention recently and has guided subsequent defense efforts considering its critical nature.

Knowledge Distillation

One-Shot Doc Snippet Detection: Powering Search in Document Beyond Text

no code implementations12 Sep 2022 Abhinav Java, Shripad Deshmukh, Milan Aggarwal, Surgan Jandial, Mausoom Sarkar, Balaji Krishnamurthy

MONOMER fuses context from visual, textual, and spatial modalities of snippets and documents to find query snippet in target documents.

document understanding object-detection +3

Persuasion Strategies in Advertisements

1 code implementation20 Aug 2022 Yaman Kumar Singla, Rajat Jha, Arunim Gupta, Milan Aggarwal, Aditya Garg, Tushar Malyan, Ayush Bhardwaj, Rajiv Ratn Shah, Balaji Krishnamurthy, Changyou Chen

Motivated by persuasion literature in social psychology and marketing, we introduce an extensive vocabulary of persuasion strategies and build the first ad image corpus annotated with persuasion strategies.

Image Segmentation Marketing +2

LM-CORE: Language Models with Contextually Relevant External Knowledge

1 code implementation Findings (NAACL) 2022 Jivat Neet Kaur, Sumit Bhatia, Milan Aggarwal, Rachit Bansal, Balaji Krishnamurthy

Large transformer-based pre-trained language models have achieved impressive performance on a variety of knowledge-intensive tasks and can capture factual knowledge in their parameters.

Knowledge Probing Language Modelling

Differentiable Agent-based Epidemiology

1 code implementation20 Jul 2022 Ayush Chopra, Alexander Rodríguez, Jayakumar Subramanian, Arnau Quera-Bofarull, Balaji Krishnamurthy, B. Aditya Prakash, Ramesh Raskar

Mechanistic simulators are an indispensable tool for epidemiology to explore the behavior of complex, dynamic infections under varying conditions and navigate uncertain environments.

Epidemiology Navigate

INDIGO: Intrinsic Multimodality for Domain Generalization

no code implementations13 Jun 2022 Puneet Mangla, Shivam Chandhok, Milan Aggarwal, Vineeth N Balasubramanian, Balaji Krishnamurthy

To this end, we propose IntriNsic multimodality for DomaIn GeneralizatiOn (INDIGO), a simple and elegant way of leveraging the intrinsic modality present in these pre-trained multimodal networks along with the visual modality to enhance generalization to unseen domains at test-time.

Domain Generalization

On Conditioning the Input Noise for Controlled Image Generation with Diffusion Models

no code implementations8 May 2022 Vedant Singh, Surgan Jandial, Ayush Chopra, Siddharth Ramesh, Balaji Krishnamurthy, Vineeth N. Balasubramanian

Conditional image generation has paved the way for several breakthroughs in image editing, generating stock photos and 3-D object generation.

Conditional Image Generation

DeepABM: Scalable, efficient and differentiable agent-based simulations via graph neural networks

no code implementations9 Oct 2021 Ayush Chopra, Esma Gel, Jayakumar Subramanian, Balaji Krishnamurthy, Santiago Romero-Brufau, Kalyan S. Pasupathy, Thomas C. Kingsley, Ramesh Raskar

We introduce DeepABM, a framework for agent-based modeling that leverages geometric message passing of graph neural networks for simulating action and interactions over large agent populations.

MINIMAL: Mining Models for Data Free Universal Adversarial Triggers

1 code implementation25 Sep 2021 Swapnil Parekh, Yaman Singla Kumar, Somesh Singh, Changyou Chen, Balaji Krishnamurthy, Rajiv Ratn Shah

It is well known that natural language models are vulnerable to adversarial attacks, which are mostly input-specific in nature.

Natural Language Inference

ZFlow: Gated Appearance Flow-based Virtual Try-on with 3D Priors

no code implementations ICCV 2021 Ayush Chopra, Rishabh Jain, Mayur Hemani, Balaji Krishnamurthy

Image-based virtual try-on involves synthesizing perceptually convincing images of a model wearing a particular garment and has garnered significant research interest due to its immense practical applicability.

SSIM Virtual Try-on

Video2Skill: Adapting Events in Demonstration Videos to Skills in an Environment using Cyclic MDP Homomorphisms

no code implementations8 Sep 2021 Sumedh A Sontakke, Sumegh Roychowdhury, Mausoom Sarkar, Nikaash Puri, Balaji Krishnamurthy, Laurent Itti

Humans excel at learning long-horizon tasks from demonstrations augmented with textual commentary, as evidenced by the burgeoning popularity of tutorial videos online.

Decision Making

No Need to Know Everything! Efficiently Augmenting Language Models With External Knowledge

no code implementations AKBC Workshop CSKB 2021 Jivat Neet Kaur, Sumit Bhatia, Milan Aggarwal, Rachit Bansal, Balaji Krishnamurthy

This allows the training of the language model to be de-coupled from the external knowledge source and the latter can be updated without affecting the parameters of the language model.

Language Modelling

Speaker-Conditioned Hierarchical Modeling for Automated Speech Scoring

no code implementations30 Aug 2021 Yaman Kumar Singla, Avykat Gupta, Shaurya Bagga, Changyou Chen, Balaji Krishnamurthy, Rajiv Ratn Shah

In our technique, we take advantage of the fact that oral proficiency tests rate multiple responses for a candidate.

Multi-Modal Association based Grouping for Form Structure Extraction

1 code implementation9 Jul 2021 Milan Aggarwal, Mausoom Sarkar, Hiresh Gupta, Balaji Krishnamurthy

Experimental results show the effectiveness of our approach achieving a recall of 90. 29%, 73. 80%, 83. 12%, and 52. 72% for the above structures, respectively, outperforming semantic segmentation baselines significantly.

Semantic Segmentation

Form2Seq : A Framework for Higher-Order Form Structure Extraction

1 code implementation EMNLP 2020 Milan Aggarwal, Hiresh Gupta, Mausoom Sarkar, Balaji Krishnamurthy

To mitigate this, we propose Form2Seq, a novel sequence-to-sequence (Seq2Seq) inspired framework for structure extraction using text, with a specific focus on forms, which leverages relative spatial arrangement of structures.

Semantic Segmentation

Information-theoretic Evolution of Model Agnostic Global Explanations

no code implementations14 May 2021 Sukriti Verma, Nikaash Puri, Piyush Gupta, Balaji Krishnamurthy

Our approach builds on top of existing local model explanation methods to extract conditions important for explaining model behavior for specific instances followed by an evolutionary algorithm that optimizes an information theory based fitness function to construct rules that explain global model behavior.

Marketing

Data InStance Prior (DISP) in Generative Adversarial Networks

no code implementations8 Dec 2020 Puneet Mangla, Nupur Kumari, Mayank Singh, Balaji Krishnamurthy, Vineeth N Balasubramanian

Previous works have addressed training in low data setting by leveraging transfer learning and data augmentation techniques.

Data Augmentation Image Generation +2

LT-GAN: Self-Supervised GAN with Latent Transformation Detection

no code implementations19 Oct 2020 Parth Patel, Nupur Kumari, Mayank Singh, Balaji Krishnamurthy

We propose a self-supervised approach (LT-GAN) to improve the generation quality and diversity of images by estimating the GAN-induced transformation (i. e. transformation induced in the generated images by perturbing the latent space of generator).

Image Generation

Data Instance Prior for Transfer Learning in GANs

no code implementations28 Sep 2020 Puneet Mangla, Nupur Kumari, Mayank Singh, Vineeth N. Balasubramanian, Balaji Krishnamurthy

Recent advances in generative adversarial networks (GANs) have shown remarkable progress in generating high-quality images.

Data Augmentation Image Generation +2

Retrospective Loss: Looking Back to Improve Training of Deep Neural Networks

no code implementations24 Jun 2020 Surgan Jandial, Ayush Chopra, Mausoom Sarkar, Piyush Gupta, Balaji Krishnamurthy, Vineeth Balasubramanian

Deep neural networks (DNNs) are powerful learning machines that have enabled breakthroughs in several domains.

Explain Your Move: Understanding Agent Actions Using Focused Feature Saliency

1 code implementation ICLR 2020 Piyush Gupta, Nikaash Puri, Sukriti Verma, Dhruv Kayastha, Shripad Deshmukh, Balaji Krishnamurthy, Sameer Singh

We show through illustrative examples (Chess, Atari, Go), human studies (Chess), and automated evaluation methods (Chess) that our approach generates saliency maps that are more interpretable for humans than existing approaches.

Atari Games Board Games +2

SimPropNet: Improved Similarity Propagation for Few-shot Image Segmentation

no code implementations30 Apr 2020 Siddhartha Gairola, Mayur Hemani, Ayush Chopra, Balaji Krishnamurthy

Few-shot segmentation (FSS) methods perform image segmentation for a particular object class in a target (query) image, using a small set of (support) image-mask pairs.

Image Segmentation Segmentation +1

Exploring Neural Models for Parsing Natural Language into First-Order Logic

no code implementations16 Feb 2020 Hrituraj Singh, Milan Aggrawal, Balaji Krishnamurthy

We model FOL parsing as a sequence to sequence mapping task where given a natural language sentence, it is encoded into an intermediate representation using an LSTM followed by a decoder which sequentially generates the predicates in the corresponding FOL formula.

Semantic Parsing Sentence

SieveNet: A Unified Framework for Robust Image-Based Virtual Try-On

1 code implementation17 Jan 2020 Surgan Jandial, Ayush Chopra, Kumar Ayush, Mayur Hemani, Abhijeet Kumar, Balaji Krishnamurthy

An efficient framework for this is composed of two stages: (1) warping (transforming) the try-on cloth to align with the pose and shape of the target model, and (2) a texture transfer module to seamlessly integrate the warped try-on cloth onto the target model image.

Geometric Matching Virtual Try-on

ShapeVis: High-dimensional Data Visualization at Scale

no code implementations15 Jan 2020 Nupur Kumari, Siddarth R., Akash Rupela, Piyush Gupta, Balaji Krishnamurthy

This graph captures the structural characteristics of the point cloud, and its weights are determined using a Finite Markov Chain.

Community Detection Data Visualization +3

Explain Your Move: Understanding Agent Actions Using Specific and Relevant Feature Attribution

2 code implementations23 Dec 2019 Nikaash Puri, Sukriti Verma, Piyush Gupta, Dhruv Kayastha, Shripad Deshmukh, Balaji Krishnamurthy, Sameer Singh

We show through illustrative examples (Chess, Atari, Go), human studies (Chess), and automated evaluation methods (Chess) that SARFA generates saliency maps that are more interpretable for humans than existing approaches.

Atari Games Board Games +2

A Method for Computing Class-wise Universal Adversarial Perturbations

no code implementations1 Dec 2019 Tejus Gupta, Abhishek Sinha, Nupur Kumari, Mayank Singh, Balaji Krishnamurthy

We present an algorithm for computing class-specific universal adversarial perturbations for deep neural networks.

Document Structure Extraction using Prior based High Resolution Hierarchical Semantic Segmentation

no code implementations ECCV 2020 Mausoom Sarkar, Milan Aggarwal, Arneh Jain, Hiresh Gupta, Balaji Krishnamurthy

We introduce our new human-annotated forms dataset and show that our method significantly outperforms different segmentation baselines on this dataset in extracting hierarchical structures.

Segmentation Semantic Segmentation +2

Harnessing the Vulnerability of Latent Layers in Adversarially Trained Models

1 code implementation13 May 2019 Mayank Singh, Abhishek Sinha, Nupur Kumari, Harshitha Machiraju, Balaji Krishnamurthy, Vineeth N. Balasubramanian

We analyze the adversarially trained robust models to study their vulnerability against adversarial attacks at the level of the latent layers.

Adversarial Attack

ReDecode Framework for Iterative Improvement in Paraphrase Generation

no code implementations11 Nov 2018 Milan Aggarwal, Nupur Kumari, Ayush Bansal, Balaji Krishnamurthy

Generating paraphrases, that is, different variations of a sentence conveying the same meaning, is an important yet challenging task in NLP.

Information Retrieval Paraphrase Generation +3

Attention Based Natural Language Grounding by Navigating Virtual Environment

1 code implementation23 Apr 2018 Akilesh B, Abhishek Sinha, Mausoom Sarkar, Balaji Krishnamurthy

We develop an attention mechanism for multi-modal fusion of visual and textual modalities that allows the agent to learn to complete the task and achieve language grounding.

Navigate Zero-shot Generalization

Neural Networks in Adversarial Setting and Ill-Conditioned Weight Space

no code implementations3 Jan 2018 Mayank Singh, Abhishek Sinha, Balaji Krishnamurthy

Recently, Neural networks have seen a huge surge in its adoption due to their ability to provide high accuracy on various tasks.

Learning to navigate by distilling visual information and natural language instructions

no code implementations ICLR 2018 Abhishek Sinha, Akilesh B, Mausoom Sarkar, Balaji Krishnamurthy

In this work, we focus on the problem of grounding language by training an agent to follow a set of natural language instructions and navigate to a target object in a 2D grid environment.

Navigate Zero-shot Generalization

Improving Search through A3C Reinforcement Learning based Conversational Agent

no code implementations ICLR 2018 Milan Aggarwal, Aarushi Arora, Shagun Sodhani, Balaji Krishnamurthy

We develop a reinforcement learning based search assistant which can assist users through a set of actions and sequence of interactions to enable them realize their intent.

Q-Learning reinforcement-learning +1

MAGIX: Model Agnostic Globally Interpretable Explanations

no code implementations22 Jun 2017 Nikaash Puri, Piyush Gupta, Pratiksha Agarwal, Sukriti Verma, Balaji Krishnamurthy

Explaining the behavior of a black box machine learning model at the instance level is useful for building trust.

BIG-bench Machine Learning Marketing

Introspection: Accelerating Neural Network Training By Learning Weight Evolution

no code implementations17 Apr 2017 Abhishek Sinha, Mausoom Sarkar, Aahitagni Mukherjee, Balaji Krishnamurthy

In this paper, we explore the idea of learning weight evolution pattern from a simple network for accelerating training of novel neural networks.

General Classification

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