Search Results for author: Oshani Seneviratne

Found 24 papers, 2 papers with code

Terminators: Terms of Service Parsing and Auditing Agents

no code implementations16 May 2025 Maruf Ahmed Mridul, Inwon Kang, Oshani Seneviratne

Terms of Service (ToS) documents are often lengthy and written in complex legal language, making them difficult for users to read and understand.

Term Extraction

SemCAFE: When Named Entities make the Difference Assessing Web Source Reliability through Entity-level Analytics

no code implementations3 Apr 2025 Gautam Kishore Shahi, Oshani Seneviratne, Marc Spaniol

With the shift from traditional to digital media, the online landscape now hosts not only reliable news articles but also a significant amount of unreliable content.

Articles

Blockchain-based Framework for Scalable and Incentivized Federated Learning

no code implementations20 Feb 2025 Bijun Wu, Oshani Seneviratne

Federated Learning (FL) enables collaborative model training without sharing raw data, preserving privacy while harnessing distributed datasets.

Fairness Federated Learning

Federated Fine-Tuning of Large Language Models: Kahneman-Tversky vs. Direct Preference Optimization

no code implementations20 Feb 2025 Fernando Spadea, Oshani Seneviratne

We evaluate Kahneman-Tversky Optimization (KTO) as a fine-tuning method for large language models (LLMs) in federated learning (FL) settings, comparing it against Direct Preference Optimization (DPO).

Federated Learning Privacy Preserving

Explainability-Driven Quality Assessment for Rule-Based Systems

no code implementations3 Feb 2025 Oshani Seneviratne, Brendan Capuzzo, William Van Woensel

This paper introduces an explanation framework designed to enhance the quality of rules in knowledge-based reasoning systems based on dataset-driven insights.

counterfactual Decision Making +1

On Learning Representations for Tabular Data Distillation

no code implementations23 Jan 2025 Inwon Kang, Parikshit Ram, Yi Zhou, Horst Samulowitz, Oshani Seneviratne

Dataset distillation generates a small set of information-rich instances from a large dataset, resulting in reduced storage requirements, privacy or copyright risks, and computational costs for downstream modeling, though much of the research has focused on the image data modality.

Dataset Distillation Representation Learning

Semantic Interoperability on Blockchain by Generating Smart Contracts Based on Knowledge Graphs

no code implementations11 Sep 2024 William Van Woensel, Oshani Seneviratne

Conclusions: We showed that it is feasible to automatically generate smart contract code based on a semantic KG, in a way that respects the economic rules of blockchain.

Code Generation Decision Making +1

Using Large Language Models for Generating Smart Contracts for Health Insurance from Textual Policies

no code implementations9 Jul 2024 Inwon Kang, William Van Woensel, Oshani Seneviratne

We ascertain LLMs are good at the task (1), and the structured output is useful to validate tasks (2) and (3).

16k Task 2

Predicting Depression and Anxiety: A Multi-Layer Perceptron for Analyzing the Mental Health Impact of COVID-19

no code implementations9 Mar 2024 David Fong, Tianshu Chu, Matthew Heflin, Xiaosi Gu, Oshani Seneviratne

We introduce a multi-layer perceptron (MLP) called the COVID-19 Depression and Anxiety Predictor (CoDAP) to predict mental health trends, particularly anxiety and depression, during the COVID-19 pandemic.

LLM-augmented Preference Learning from Natural Language

no code implementations12 Oct 2023 Inwon Kang, Sikai Ruan, Tyler Ho, Jui-Chien Lin, Farhad Mohsin, Oshani Seneviratne, Lirong Xia

Comparing performances with existing methods, we see that pre-trained LLMs are able to outperform the previous SotA models with no fine-tuning involved.

Few-Shot Learning Graph Attention +1

PredictChain: Empowering Collaboration and Data Accessibility for AI in a Decentralized Blockchain-based Marketplace

1 code implementation27 Jul 2023 Matthew T. Pisano, Connor J. Patterson, Oshani Seneviratne

Limited access to computing resources and training data poses significant challenges for individuals and groups aiming to train and utilize predictive machine learning models.

MentalHealthAI: Utilizing Personal Health Device Data to Optimize Psychiatry Treatment

no code implementations9 Jul 2023 Manan Shukla, Oshani Seneviratne

Mental health disorders remain a significant challenge in modern healthcare, with diagnosis and treatment often relying on subjective patient descriptions and past medical history.

Management

Leveraging Clinical Context for User-Centered Explainability: A Diabetes Use Case

no code implementations6 Jul 2021 Shruthi Chari, Prithwish Chakraborty, Mohamed Ghalwash, Oshani Seneviratne, Elif K. Eyigoz, Daniel M. Gruen, Fernando Suarez Saiz, Ching-Hua Chen, Pablo Meyer Rojas, Deborah L. McGuinness

To enable the adoption of the ever improving AI risk prediction models in practice, we have begun to explore techniques to contextualize such models along three dimensions of interest: the patients' clinical state, AI predictions about their risk of complications, and algorithmic explanations supporting the predictions.

Diagnostic

Semantic Modeling for Food Recommendation Explanations

no code implementations4 May 2021 Ishita Padhiar, Oshani Seneviratne, Shruthi Chari, Daniel Gruen, Deborah L. McGuinness

Our motivation with the use of FEO is to empower users to make decisions about their health, fully equipped with an understanding of the AI recommender systems as they relate to user questions, by providing reasoning behind their recommendations in the form of explanations.

Food recommendation Knowledge Base Question Answering +1

Applying Personal Knowledge Graphs to Health

no code implementations15 Apr 2021 Sola Shirai, Oshani Seneviratne, Deborah L. McGuinness

Knowledge graphs that encapsulate personal health information, or personal health knowledge graphs (PHKG), can help enable personalized health care in knowledge-driven systems.

Knowledge Graphs

Explanation Ontology: A Model of Explanations for User-Centered AI

no code implementations4 Oct 2020 Shruthi Chari, Oshani Seneviratne, Daniel M. Gruen, Morgan A. Foreman, Amar K. Das, Deborah L. McGuinness

With greater adoption of these systems and emphasis on user-centric explainability, there is a need for a structured representation that treats explainability as a primary consideration, mapping end user needs to specific explanation types and the system's AI capabilities.

Explanation Ontology in Action: A Clinical Use-Case

no code implementations4 Oct 2020 Shruthi Chari, Oshani Seneviratne, Daniel M. Gruen, Morgan A. Foreman, Amar K. Das, Deborah L. McGuinness

We addressed the problem of a lack of semantic representation for user-centric explanations and different explanation types in our Explanation Ontology (https://purl. org/heals/eo).

Directions for Explainable Knowledge-Enabled Systems

no code implementations17 Mar 2020 Shruthi Chari, Daniel M. Gruen, Oshani Seneviratne, Deborah L. McGuinness

Interest in the field of Explainable Artificial Intelligence has been growing for decades and has accelerated recently.

Explainable artificial intelligence

Foundations of Explainable Knowledge-Enabled Systems

no code implementations17 Mar 2020 Shruthi Chari, Daniel M. Gruen, Oshani Seneviratne, Deborah L. McGuinness

Additionally, borrowing from the strengths of past approaches and identifying gaps needed to make explanations user- and context-focused, we propose new definitions for explanations and explainable knowledge-enabled systems.

Explainable artificial intelligence

Making Study Populations Visible through Knowledge Graphs

no code implementations9 Jul 2019 Shruthi Chari, Miao Qi, Nkcheniyere N. Agu, Oshani Seneviratne, James P. McCusker, Kristin P. Bennett, Amar K. Das, Deborah L. McGuinness

To address these challenges, we develop an ontology-enabled prototype system, which exposes the population descriptions in research studies in a declarative manner, with the ultimate goal of allowing medical practitioners to better understand the applicability and generalizability of treatment recommendations.

Knowledge Graphs

Knowledge Integration for Disease Characterization: A Breast Cancer Example

no code implementations20 Jul 2018 Oshani Seneviratne, Sabbir M. Rashid, Shruthi Chari, James P. McCusker, Kristin P. Bennett, James A. Hendler, Deborah L. McGuinness

With the rapid advancements in cancer research, the information that is useful for characterizing disease, staging tumors, and creating treatment and survivorship plans has been changing at a pace that creates challenges when physicians try to remain current.

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