Search Results for author: Bill Howe

Found 18 papers, 5 papers with code

Laboratory-Scale AI: Open-Weight Models are Competitive with ChatGPT Even in Low-Resource Settings

no code implementations27 May 2024 Robert Wolfe, Isaac Slaughter, Bin Han, Bingbing Wen, Yiwei Yang, Lucas Rosenblatt, Bernease Herman, Eva Brown, Zening Qu, Nic Weber, Bill Howe

The rapid proliferation of generative AI has raised questions about the competitiveness of lower-parameter, locally tunable, open-weight models relative to high-parameter, API-guarded, closed-weight models in terms of performance, domain adaptation, cost, and generalization.

Domain Adaptation Hallucination

Characterizing LLM Abstention Behavior in Science QA with Context Perturbations

1 code implementation18 Apr 2024 Bingbing Wen, Bill Howe, Lucy Lu Wang

The correct model response in the face of uncertainty is to abstain from answering a question so as not to mislead the user.

Label-Efficient Group Robustness via Out-of-Distribution Concept Curation

no code implementations CVPR 2024 Yiwei Yang, Anthony Z. Liu, Robert Wolfe, Aylin Caliskan, Bill Howe

We propose Concept Correction a framework that represents a concept as a curated set of images from any source then labels each training sample by its similarity to the concept set to control spurious correlations.

Attribute Image Classification

InfoVisDial: An Informative Visual Dialogue Dataset by Bridging Large Multimodal and Language Models

no code implementations21 Dec 2023 Bingbing Wen, Zhengyuan Yang, JianFeng Wang, Zhe Gan, Bill Howe, Lijuan Wang

In this paper, we build a visual dialogue dataset, named InfoVisDial, which provides rich informative answers in each round even with external knowledge related to the visual content.

Top-down Green-ups: Satellite Sensing and Deep Models to Predict Buffelgrass Phenology

1 code implementation1 Oct 2023 Lucas Rosenblatt, Bin Han, Erin Posthumus, Theresa Crimmins, Bill Howe

An invasive species of grass known as "buffelgrass" contributes to severe wildfires and biodiversity loss in the Southwest United States.

$GRU^{spa}$: Gated Recurrent Unit with Spatial Attention for Spatio-Temporal Disaggregation

no code implementations9 Jun 2023 Bin Han, Bill Howe

The spatial attention layers capture spatial interactions among regions, while the gated recurrent module captures the temporal dependencies.

Super-Resolution Transfer Learning

Adapting to Skew: Imputing Spatiotemporal Urban Data with 3D Partial Convolutions and Biased Masking

no code implementations10 Jan 2023 Bin Han, Bill Howe

To ensure coverage and utility, we adapt computer vision techniques for image inpainting to operate on 3D histograms (2D space + 1D time) commonly used for data exchange in urban settings.

Image Inpainting

Contrastive Language-Vision AI Models Pretrained on Web-Scraped Multimodal Data Exhibit Sexual Objectification Bias

1 code implementation21 Dec 2022 Robert Wolfe, Yiwei Yang, Bill Howe, Aylin Caliskan

A first experiment uses standardized images of women from the Sexual OBjectification and EMotion Database, and finds that human characteristics are disassociated from images of objectified women: the model's recognition of emotional state is mediated by whether the subject is fully or partially clothed.

Data Management for Causal Algorithmic Fairness

no code implementations20 Aug 2019 Babak Salimi, Bill Howe, Dan Suciu

Fairness is increasingly recognized as a critical component of machine learning systems.

BIG-bench Machine Learning Fairness +1

Delineating Knowledge Domains in the Scientific Literature Using Visual Information

no code implementations12 Aug 2019 Sean Yang, Po-shen Lee, Jevin D. West, Bill Howe

In this paper, we demonstrate the utility of using scientific figures as markers of knowledge domains in science, which can be used for classification, recommender systems, and studies of scientific information exchange.

Recommendation Systems

FairST: Equitable Spatial and Temporal Demand Prediction for New Mobility Systems

no code implementations21 Jun 2019 An Yan, Bill Howe

Emerging transportation modes, including car-sharing, bike-sharing, and ride-hailing, are transforming urban mobility but have been shown to reinforce socioeconomic inequities.


Capuchin: Causal Database Repair for Algorithmic Fairness

no code implementations21 Feb 2019 Babak Salimi, Luke Rodriguez, Bill Howe, Dan Suciu

However, it is the underlying data on which these systems are trained that often reflect discrimination, suggesting a database repair problem.


JECL: Joint Embedding and Cluster Learning for Image-Text Pairs

no code implementations4 Jan 2019 Sean T. Yang, Kuan-Hao Huang, Bill Howe

We propose JECL, a method for clustering image-caption pairs by training parallel encoders with regularized clustering and alignment objectives, simultaneously learning both representations and cluster assignments.


Query2Vec: An Evaluation of NLP Techniques for Generalized Workload Analytics

no code implementations17 Jan 2018 Shrainik Jain, Bill Howe, Jiaqi Yan, Thierry Cruanes

We find that these general approaches, when trained on a large corpus of SQL queries, provides a robust foundation for a variety of workload analysis tasks and database features, without requiring application-specific feature engineering.

Feature Engineering Transfer Learning

EZLearn: Exploiting Organic Supervision in Large-Scale Data Annotation

no code implementations25 Sep 2017 Maxim Grechkin, Hoifung Poon, Bill Howe

In science and other high-value domains, large repositories of data samples are often available, together with two sources of organic supervision: a lexicon for the annotation classes, and text descriptions that accompany some data samples.

LaraDB: A Minimalist Kernel for Linear and Relational Algebra Computation

1 code implementation21 Mar 2017 Dylan Hutchison, Bill Howe, Dan Suciu

Analytics tasks manipulate structured data with variants of relational algebra (RA) and quantitative data with variants of linear algebra (LA).


Viziometrics: Analyzing Visual Information in the Scientific Literature

no code implementations16 May 2016 Po-shen Lee, Jevin D. West, Bill Howe

Remarkably, we find a significant correlation between scientific impact and the use of visual information, where higher impact papers tend to include more diagrams, and to a lesser extent more plots and photographs.

Lara: A Key-Value Algebra underlying Arrays and Relations

1 code implementation12 Apr 2016 Dylan Hutchison, Bill Howe, Dan Suciu

Data processing systems roughly group into families such as relational, array, graph, and key-value.

Databases Programming Languages

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