Search Results for author: Phillip Howard

Found 11 papers, 5 papers with code

Uncovering Bias in Large Vision-Language Models with Counterfactuals

no code implementations29 Mar 2024 Phillip Howard, Anahita Bhiwandiwalla, Kathleen C. Fraser, Svetlana Kiritchenko

We comprehensively evaluate the text produced by different LVLMs under this counterfactual generation setting and find that social attributes such as race, gender, and physical characteristics depicted in input images can significantly influence toxicity and the generation of competency-associated words.

counterfactual Question Answering +1

SocialCounterfactuals: Probing and Mitigating Intersectional Social Biases in Vision-Language Models with Counterfactual Examples

1 code implementation30 Nov 2023 Phillip Howard, Avinash Madasu, Tiep Le, Gustavo Lujan Moreno, Anahita Bhiwandiwalla, Vasudev Lal

Our approach utilizes Stable Diffusion with cross attention control to produce sets of counterfactual image-text pairs that are highly similar in their depiction of a subject (e. g., a given occupation) while differing only in their depiction of intersectional social attributes (e. g., race & gender).

counterfactual

NeuroPrompts: An Adaptive Framework to Optimize Prompts for Text-to-Image Generation

1 code implementation20 Nov 2023 Shachar Rosenman, Vasudev Lal, Phillip Howard

In this work, we present NeuroPrompts, an adaptive framework that automatically enhances a user's prompt to improve the quality of generations produced by text-to-image models.

Language Modelling Prompt Engineering +1

Semi-Structured Chain-of-Thought: Integrating Multiple Sources of Knowledge for Improved Language Model Reasoning

no code implementations14 Nov 2023 Xin Su, Tiep Le, Steven Bethard, Phillip Howard

An important open question in the use of large language models for knowledge-intensive tasks is how to effectively integrate knowledge from three sources: the model's parametric memory, external structured knowledge, and external unstructured knowledge.

Knowledge Graphs Language Modelling +2

Fusing Temporal Graphs into Transformers for Time-Sensitive Question Answering

no code implementations30 Oct 2023 Xin Su, Phillip Howard, Nagib Hakim, Steven Bethard

Answering time-sensitive questions from long documents requires temporal reasoning over the times in questions and documents.

Question Answering Temporal Information Extraction

Probing Intersectional Biases in Vision-Language Models with Counterfactual Examples

no code implementations4 Oct 2023 Phillip Howard, Avinash Madasu, Tiep Le, Gustavo Lujan Moreno, Vasudev Lal

While vision-language models (VLMs) have achieved remarkable performance improvements recently, there is growing evidence that these models also posses harmful biases with respect to social attributes such as gender and race.

counterfactual

NeuroComparatives: Neuro-Symbolic Distillation of Comparative Knowledge

1 code implementation8 May 2023 Phillip Howard, Junlin Wang, Vasudev Lal, Gadi Singer, Yejin Choi, Swabha Swayamdipta

We introduce NeuroComparatives, a novel framework for comparative knowledge distillation overgenerated from language models such as GPT-variants and LLaMA, followed by stringent filtering of the generated knowledge.

Knowledge Distillation valid +1

Thrill-K Architecture: Towards a Solution to the Problem of Knowledge Based Understanding

no code implementations28 Feb 2023 Gadi Singer, Joscha Bach, Tetiana Grinberg, Nagib Hakim, Phillip Howard, Vasudev Lal, Zev Rivlin

While end-to-end learning systems are rapidly gaining capabilities and popularity, the increasing computational demands for deploying such systems, along with a lack of flexibility, adaptability, explainability, reasoning and verification capabilities, require new types of architectures.

NeuroCounterfactuals: Beyond Minimal-Edit Counterfactuals for Richer Data Augmentation

1 code implementation22 Oct 2022 Phillip Howard, Gadi Singer, Vasudev Lal, Yejin Choi, Swabha Swayamdipta

While counterfactual data augmentation offers a promising step towards robust generalization in natural language processing, producing a set of counterfactuals that offer valuable inductive bias for models remains a challenge.

counterfactual Data Augmentation +4

InterpreT: An Interactive Visualization Tool for Interpreting Transformers

no code implementations EACL 2021 Vasudev Lal, Arden Ma, Estelle Aflalo, Phillip Howard, Ana Simoes, Daniel Korat, Oren Pereg, Gadi Singer, Moshe Wasserblat

With the increasingly widespread use of Transformer-based models for NLU/NLP tasks, there is growing interest in understanding the inner workings of these models, why they are so effective at a wide range of tasks, and how they can be further tuned and improved.

Aspect-Based Sentiment Analysis Aspect-Based Sentiment Analysis (ABSA)

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