Search Results for author: Deb Roy

Found 29 papers, 9 papers with code

ConGraT: Self-Supervised Contrastive Pretraining for Joint Graph and Text Embeddings

1 code implementation23 May 2023 William Brannon, Suyash Fulay, Hang Jiang, Wonjune Kang, Brandon Roy, Jad Kabbara, Deb Roy

We propose ConGraT(Contrastive Graph-Text pretraining), a general, self-supervised method for jointly learning separate representations of texts and nodes in a parent (or ``supervening'') graph, where each text is associated with one of the nodes.

Contrastive Learning Link Prediction

PersonaLLM: Investigating the Ability of Large Language Models to Express Personality Traits

1 code implementation4 May 2023 Hang Jiang, Xiajie Zhang, Xubo Cao, Cynthia Breazeal, Deb Roy, Jad Kabbara

Despite the many use cases for large language models (LLMs) in creating personalized chatbots, there has been limited research on evaluating the extent to which the behaviors of personalized LLMs accurately and consistently reflect specific personality traits.

Language Models Trained on Media Diets Can Predict Public Opinion

no code implementations28 Mar 2023 Eric Chu, Jacob Andreas, Stephen Ansolabehere, Deb Roy

Public opinion reflects and shapes societal behavior, but the traditional survey-based tools to measure it are limited.

Probing Language Models

Redrawing attendance boundaries to promote racial and ethnic diversity in elementary schools

no code implementations14 Mar 2023 Nabeel Gillani, Doug Beeferman, Christine Vega-Pourheydarian, Cassandra Overney, Pascal Van Hentenryck, Deb Roy

Most US school districts draw "attendance boundaries" to define catchment areas that assign students to schools near their homes, often recapitulating neighborhood demographic segregation in schools.

Combinatorial Optimization

M-SENSE: Modeling Narrative Structure in Short Personal Narratives Using Protagonist's Mental Representations

no code implementations18 Feb 2023 Prashanth Vijayaraghavan, Deb Roy

To this end, we implement a computational model that leverages the protagonist's mental state information obtained from a pre-trained model trained on social commonsense knowledge and integrates their representations with contextual semantic embed-dings using a multi-feature fusion approach.

Retrieval

CommunityLM: Probing Partisan Worldviews from Language Models

1 code implementation COLING 2022 Hang Jiang, Doug Beeferman, Brandon Roy, Deb Roy

As political attitudes have diverged ideologically in the United States, political speech has diverged lingusitically.

End-to-End Zero-Shot Voice Conversion with Location-Variable Convolutions

1 code implementation19 May 2022 Wonjune Kang, Mark Hasegawa-Johnson, Deb Roy

Zero-shot voice conversion is becoming an increasingly popular research topic, as it promises the ability to transform speech to sound like any speaker.

Speech Synthesis Style Transfer +1

Topic Detection and Tracking with Time-Aware Document Embeddings

no code implementations12 Dec 2021 Hang Jiang, Doug Beeferman, Weiquan Mao, Deb Roy

TDT systems aim to cluster a corpus of news articles by event, and in that context, stories that describe the same event are likely to have been written at around the same time.

Event Detection

Lifelong Knowledge-Enriched Social Event Representation Learning

no code implementations EACL 2021 Prashanth Vijayaraghavan, Deb Roy

First, we investigate methods to incorporate pragmatic aspects into our social event embeddings by leveraging social commonsense knowledge.

Continual Learning Representation Learning

Interpretable Multi-Modal Hate Speech Detection

no code implementations2 Mar 2021 Prashanth Vijayaraghavan, Hugo Larochelle, Deb Roy

With growing role of social media in shaping public opinions and beliefs across the world, there has been an increased attention to identify and counter the problem of hate speech on social media.

Hate Speech Detection

DAPPER: Learning Domain-Adapted Persona Representation Using Pretrained BERT and External Memory

no code implementations Asian Chapter of the Association for Computational Linguistics 2020 Prashanth Vijayaraghavan, Eric Chu, Deb Roy

In this paper, we present a model called DAPPER that can learn to embed persona from natural language and alleviate task or domain-specific data sparsity issues related to personas.

Hate Speech Detection Language Modelling

Video SemNet: Memory-Augmented Video Semantic Network

no code implementations22 Nov 2020 Prashanth Vijayaraghavan, Deb Roy

Stories are a very compelling medium to convey ideas, experiences, social and cultural values.

Are Visual Explanations Useful? A Case Study in Model-in-the-Loop Prediction

no code implementations23 Jul 2020 Eric Chu, Deb Roy, Jacob Andreas

We present a randomized controlled trial for a model-in-the-loop regression task, with the goal of measuring the extent to which (1) good explanations of model predictions increase human accuracy, and (2) faulty explanations decrease human trust in the model.

Decision Making Experimental Design

Exploring aspects of similarity between spoken personal narratives by disentangling them into narrative clause types

1 code implementation WS 2020 Belen Saldias, Deb Roy

Second, we ask non-narrative experts to annotate those clauses under Labov's sociolinguistic model of personal narratives (i. e., action, orientation, and evaluation clause types) and train a classifier that reaches 84. 7% F-score for the highest-agreed clauses.

RadioTalk: a large-scale corpus of talk radio transcripts

1 code implementation16 Jul 2019 Doug Beeferman, William Brannon, Deb Roy

We introduce RadioTalk, a corpus of speech recognition transcripts sampled from talk radio broadcasts in the United States between October of 2018 and March of 2019.

Descriptive speech-recognition +1

Audio-Visual Sentiment Analysis for Learning Emotional Arcs in Movies

1 code implementation8 Dec 2017 Eric Chu, Deb Roy

In this paper, we use machine learning methods to construct emotional arcs in movies, calculate families of arcs, and demonstrate the ability for certain arcs to predict audience engagement.

Clustering Sentiment Analysis

Enhanced Twitter Sentiment Classification Using Contextual Information

no code implementations WS 2015 Soroush Vosoughi, Helen Zhou, Deb Roy

This combined classifier outperforms the purely linguistic classifier, showing that integrating the rich contextual information available on Twitter into sentiment classification is a promising direction of research.

Classification General Classification +2

Tweet Acts: A Speech Act Classifier for Twitter

no code implementations17 May 2016 Soroush Vosoughi, Deb Roy

We created a taxonomy of six speech acts for Twitter and proposed a set of semantic and syntactic features.

General Classification Multi-class Classification +1

Automatic Detection and Categorization of Election-Related Tweets

no code implementations17 May 2016 Prashanth Vijayaraghavan, Soroush Vosoughi, Deb Roy

With the rise in popularity of public social media and micro-blogging services, most notably Twitter, the people have found a venue to hear and be heard by their peers without an intermediary.

A Semi-automatic Method for Efficient Detection of Stories on Social Media

no code implementations17 May 2016 Soroush Vosoughi, Deb Roy

In this paper, we present a novel semi-automatic tool that enables users to efficiently identify and track stories about real-world events on Twitter.

Digital Stylometry: Linking Profiles Across Social Networks

no code implementations17 May 2016 Soroush Vosoughi, Helen Zhou, Deb Roy

There is an ever growing number of users with accounts on multiple social media and networking sites.

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