Search Results for author: Oktie Hassanzadeh

Found 13 papers, 4 papers with code

Distilling Event Sequence Knowledge From Large Language Models

no code implementations14 Jan 2024 Somin Wadhwa, Oktie Hassanzadeh, Debarun Bhattacharjya, Ken Barker, Jian Ni

In this work, we explore the use of Large Language Models (LLMs) to generate event sequences that can effectively be used for probabilistic event model construction.

Language Modelling

An Evaluation Framework for Mapping News Headlines to Event Classes in a Knowledge Graph

1 code implementation4 Dec 2023 Steve Fonin Mbouadeu, Martin Lorenzo, Ken Barker, Oktie Hassanzadeh

In this paper, we present a methodology for creating a benchmark dataset of news headlines mapped to event classes in Wikidata, and resources for the evaluation of methods that perform the mapping.

Entity Linking Natural Language Inference +3

Event Prediction using Case-Based Reasoning over Knowledge Graphs

1 code implementation21 Sep 2023 Sola Shirai, Debarun Bhattacharjya, Oktie Hassanzadeh

To generalize our methods beyond the domain of event prediction, we frame our task as a 2-hop LP task, where the first hop is a causal relation connecting a cause event to a new effect event and the second hop is a property about the new event which we wish to predict.

Inductive Link Prediction Knowledge Graphs

Matching Table Metadata with Business Glossaries Using Large Language Models

no code implementations8 Sep 2023 Elita Lobo, Oktie Hassanzadeh, Nhan Pham, Nandana Mihindukulasooriya, Dharmashankar Subramanian, Horst Samulowitz

The resulting matching enables the use of an available or curated business glossary for retrieval and analysis without or before requesting access to the data contents.

Retrieval

Improving Neural Ranking Models with Traditional IR Methods

1 code implementation29 Aug 2023 Anik Saha, Oktie Hassanzadeh, Alex Gittens, Jian Ni, Kavitha Srinivas, Bulent Yener

Neural ranking methods based on large transformer models have recently gained significant attention in the information retrieval community, and have been adopted by major commercial solutions.

Information Retrieval Retrieval

A Cross-Domain Evaluation of Approaches for Causal Knowledge Extraction

1 code implementation7 Aug 2023 Anik Saha, Oktie Hassanzadeh, Alex Gittens, Jian Ni, Kavitha Srinivas, Bulent Yener

Causal knowledge extraction is the task of extracting relevant causes and effects from text by detecting the causal relation.

Binary Classification

Results of SemTab 2022

no code implementations SemTab@ISWC 2022 Nora Abdelmageed, Jiaoyan Chen, Vincenzo Cutrona, Vasilis Efthymiou, Oktie Hassanzadeh, Madelon Hulsebos, Ernesto Jiménez-Ruiz, Juan Sequeda, Kavitha Srinivas

SemTab 2022 was the fourth edition of the Semantic Web Challenge on Tabular Data to Knowledge Graph Matching, successfully collocated with the 21st International Semantic Web Conference (ISWC) and the 17th Ontology Matching (OM) Workshop.

Cell Entity Annotation Column Type Annotation +2

Summary Markov Models for Event Sequences

no code implementations6 May 2022 Debarun Bhattacharjya, Saurabh Sihag, Oktie Hassanzadeh, Liza Bialik

Datasets involving sequences of different types of events without meaningful time stamps are prevalent in many applications, for instance when extracted from textual corpora.

Time Series Time Series Analysis

Results of SemTab 2021

no code implementations ISWC 2021 Vincenzo Cutrona, Jiaoyan Chen, Vasilis Efthymiou, Oktie Hassanzadeh, Ernesto Jimenez-Ruiz, Juan Sequeda, Kavitha Srinivas, Nora Abdelmageed

SemTab 2021 was the third edition of the Semantic Web Challenge on Tabular Data to Knowledge Graph Matching, successfully collocated with the 20th International Semantic Web Conference (ISWC) and the 16th Ontology Matching (OM) Workshop.

Graph Matching Ontology Matching +1

Matching Web Tables with Knowledge Base Entities: From Entity Lookups to Entity Embeddings

no code implementations The Semantic Web – ISWC 2017 Vasilis Efthymiou, Oktie Hassanzadeh, Mariano Rodriguez-Muro, Vassilis Christophides

Our results show that: (1) our novel lookup-based method outperforms state-of-the-art lookup-based methods, (2) the semantic embeddings method outperforms lookup-based methods in one benchmark data set, and (3) the lack of a rich schema in Web tables can limit the ability of ontology matching tools in performing high-quality table annotation.

Cell Entity Annotation Entity Embeddings +1

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