Papers by Elena Simperl
T-REx: A Large Scale Alignment of Natural Language with Knowledge Base Triples (L18-1)
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Hady Elsahar, Pavlos Vougiouklis, Arslen Remaci, Christophe Gravier, Jonathon Hare, Frederique Laforest, Elena Simperl
| Challenge: | Existing datasets that provide alignments between natural language and knowledge bases (KB) triples are limited in size, lack coverage and are of unreported quality. |
| Approach: | They propose to build a large scale dataset of alignments between Wikipedia abstracts and Wikidata triples that is two orders of magnitude larger than the largest available alignments dataset. |
| Outcome: | The proposed dataset is two orders of magnitude larger than the largest available dataset and covers 2.5 times more predicates. |
A Decade of Knowledge Graphs in Natural Language Processing: A Survey (2022.aacl-main)
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| Challenge: | Knowledge graphs (KGs) are a representation of semantic relations between entities . despite their popularity, there is still no general understanding of what exactly a KG is or for what tasks it is applicable. |
| Approach: | They analyze 507 papers on knowledge graphs in natural language processing (NLP) they provide a taxonomy of tasks and review the maturity of individual research streams . |
| Outcome: | The findings summarize the literature and highlight directions for future work. |
Schema Generation for Large Knowledge Graphs Using Large Language Models (2025.findings-emnlp)
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| Challenge: | Schemas are a vital part of ontology engineering and require substantial knowledge engineers and domain experts to create them. |
| Approach: | They propose to use large language models to generate schemas in Shape Expressions (ShEx) to bridge the resource gap between knowledge engineers and domain experts. |
| Outcome: | The proposed pipelines use local and global information from knowledge graphs (KGs) to generate high-quality schemas in Shape Expressions (ShEx). |
Multimodal Automated Fact-Checking: A Survey (2023.findings-emnlp)
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Mubashara Akhtar, Michael Schlichtkrull, Zhijiang Guo, Oana Cocarascu, Elena Simperl, Andreas Vlachos
| Challenge: | Existing studies on automated fact-checking focus on text, but they focus on a single modality, text . multimodal misinformation is perceived as more credible by humans and spreads faster than text-only counterparts. |
| Approach: | They propose a framework for automated fact-checking that includes subtasks unique to multimodal misinformation. |
| Outcome: | The proposed framework includes subtasks unique to multimodal misinformation. |
Exploring the Numerical Reasoning Capabilities of Language Models: A Comprehensive Analysis on Tabular Data (2023.findings-emnlp)
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| Challenge: | Recent benchmarks have assessed language models' numerical abilities . limitations include tokenization and representation of numbers in text, hallucination, and a lack of numerical commonsense knowledge. |
| Approach: | They propose a hierarchical taxonomy for numerical reasoning skills that includes representation, number sense, manipulation, and complex reasoning. |
| Outcome: | The proposed model outperforms other models on the tabular Natural Language Inference task. |
Reading and Reasoning over Chart Images for Evidence-based Automated Fact-Checking (2023.findings-eacl)
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| Challenge: | Existing studies on detecting manipulated or fake images focus on identifying manipulated and false images. |
| Approach: | They propose a novel task, chart-based fact-checking, to validate textual, structural and visual information of charts to determine the veracity of textual claims. |
| Outcome: | The proposed model outperforms existing models in vision-language tests with 63.8% accuracy. |
ChartCheck: Explainable Fact-Checking over Real-World Chart Images (2024.findings-acl)
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| Challenge: | Data visualizations are often used to summarize and communicate key information, but they can also be misused to spread misinformation and promote agendas. |
| Approach: | They propose a dataset for explainable fact-checking against real-world charts that uses vision-language and chart-to-table models to evaluate the validity of the dataset. |
| Outcome: | The proposed model is based on vision-language and chart-to-table models and proposes a baseline to the community. |
PubHealthTab: A Public Health Table-based Dataset for Evidence-based Fact Checking (2022.findings-naacl)
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| Challenge: | Fact-checking is the task of establishing the veracity of factual information, commonly performed manually by journalists. |
| Approach: | They propose a table fact-checking dataset based on real world public health claims and noisy evidence tables from sources similar to those used by fact checkers. |
| Outcome: | The proposed dataset achieves an overall F1 score of 0.73 . |
A Comparative Analysis of Conversational Large Language Models in Knowledge-Based Text Generation (2024.eacl-short)
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| Challenge: | Generating natural language text from graph-structured data is essential for conversational information seeking. |
| Approach: | They conduct an empirical analysis of conversational large language models in generating natural language text from semantic triples using a WebNLG dataset. |
| Outcome: | The proposed models improve their ability to generate natural language text from semantic triples using few-shot prompting, post-processing, and efficient fine-tuning techniques. |
Multilingual and Cross-Lingual Citation Needed Detection on Wikipedia for Lower-Resource Languages (2026.acl-long)
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| Challenge: | Existing research has largely overlooked lower-resource languages for automated fact-checking. |
| Approach: | They propose a multilingual CND corpus spanning 18 languages across three resource levels and a small decoder-based language model for CND. |
| Outcome: | The proposed model outperforms prompted LLMs in cross-lingual CND across languages. |
Learning to Generate Wikipedia Summaries for Underserved Languages from Wikidata (N18-2)
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Lucie-Aimée Kaffee, Hady Elsahar, Pavlos Vougiouklis, Christophe Gravier, Frédérique Laforest, Jonathon Hare, Elena Simperl
| Challenge: | Existing Wikipedia content is unevenly distributed among 287 languages . authors propose a neural network architecture that generates textual summaries from Wikidata triples . |
| Approach: | They propose an automated approach to generate Wikipedia summaries from Wikidata triples using structured data. |
| Outcome: | The proposed approach is tested on Arabic and Esperanto languages with limited editors and content in the most under-resourced Wikipedias. |