Papers by Raúl Ortega
ISAAQ - Mastering Textbook Questions with Pre-trained Transformers and Bottom-Up and Top-Down Attention (2020.emnlp-main)
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| Challenge: | Textbook Question Answering is a complex task that requires reasoning with multimodal information from text and diagrams. |
| Approach: | They propose to use transformer language models and bottom-up and top-down attention to tackle the language and visual understanding challenges of text and diagrams. |
| Outcome: | The proposed system achieves unprecedented accuracies on all TQA question types . the system also obtains state-of-the-art results in other demanding datasets . |
SciClaims: An End-to-End Generative System for Biomedical Claim Analysis (2025.emnlp-demos)
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| Challenge: | SciClaims is an interactive web-based system for scientific claim analysis in the biomedical domain. |
| Approach: | They present SciClaims, an interactive web-based system for scientific claim analysis in the biomedical domain. |
| Outcome: | The system extracts factual claims from scientific texts and retrieves evidence from PubMed . it also verifies the validity of each claim using large language models . the system is optimized to run efficiently on a single GPU and is publicly available . |