| Challenge: | ConditionalQA is limited to questions on single documents, neglecting harder cases that may require *cross-document reasoning* and *optimization*. |
| Approach: | They propose to use a dataset to evaluate models' ability to answer eligibility questions on single documents. |
| Outcome: | The proposed dataset can reflect real-world challenges and serve as a test bed for complex conditional reasoning that requires optimization. |
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| Challenge: | Existing datasets for reading comprehension have deterministic answers, but questions in the real world do not always have definite answers. |
| Approach: | They propose a Question Answering (QA) dataset that contains complex questions with conditional answers. |
| Outcome: | The proposed dataset will motivate further research in answering complex questions over long documents. |
Towards Multi-Document Question Answering in Scientific Literature: Pipeline, Dataset, and Evaluation (2025.findings-emnlp)
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| Challenge: | Existing QA systems do not strictly enforce cross-document synthesis or exploit the explicit inter-paper structure that links sources. |
| Approach: | They propose a pipeline methodology for constructing a multi-document academic QA dataset . they detect communities based on citation networks and leverage Large Language Models . |
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MDCure: A Scalable Pipeline for Multi-Document Instruction-Following (2025.acl-long)
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| Challenge: | Multi-document (MD) processing is crucial for LLMs to handle real-world tasks such as summarization and question-answering across large sets of documents. |
| Approach: | They propose a framework that generates high-quality synthetic MD instruction data over sets of articles via targeted prompts. |
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CMQA: A Dataset of Conditional Question Answering with Multiple-Span Answers (2022.coling-1)
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| Challenge: | Existing QA datasets only contain unconditional and parallel answers . conditional question answering with hierarchical multi-span answers is challenging for the community to solve . |
| Approach: | They propose a conditional question answering task with hierarchical multi-span answers . they propose CMQA, which contains conditional and hierarchic samples . |
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IfQA: A Dataset for Open-domain Question Answering under Counterfactual Presuppositions (2023.emnlp-main)
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| Challenge: | Existing open-domain QA tasks focus on questions whose answer can be deduced directly from global factual knowledge. |
| Approach: | They propose a dataset where each question is based on a counterfactual presupposition via an "if" clause. |
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MDBench: A Synthetic Multi-Document Reasoning Benchmark Generated with Knowledge Guidance (2025.findings-acl)
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| Challenge: | Multi-document reasoning is an area of increasing relevance given LLM capabilities in handling longer-context inputs, but few benchmarks exist to rigorously examine model behavior in this setting. |
| Approach: | They propose a new dataset for evaluating LLMs on the task of multi-document reasoning that uses condensed structured seed knowledge to modify it through LLM-assisted edits. |
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Peek Across: Improving Multi-Document Modeling via Cross-Document Question-Answering (2023.acl-long)
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| Challenge: | Among recent NLP research, multi-document processing is gaining increasing attention due to the need to handle and process an increasing amount of textual data and available documents online. |
| Approach: | They propose to pre-train a generic multi-document model from a cross-document question answering pre-training objective by generating salient sentences from one document and challenging it to recover the sentence from which it was generated. |
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QLEVR: A Diagnostic Dataset for Quantificational Language and Elementary Visual Reasoning (2022.findings-naacl)
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| Challenge: | Synthetic datasets have been used to test visual question-answering datasets for reasoning abilities. |
| Approach: | They propose a visual question-answering dataset that is minimally biased and diagnostic . they propose to use the dataset to test visual reasoning abilities . |
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WIQA: A dataset for “What if...” reasoning over procedural text (D19-1)
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| Challenge: | a dataset of “What if...” questions is available for procedural text comprehension . we present the dataset as an open challenge to the community . |
| Approach: | They propose a dataset of “What if...” questions over procedural text . they use paragraphs annotated with multiple influence graphs to create the questions . |
| Outcome: | The proposed dataset achieves 73.8% accuracy, well below the human performance of 96.3%. |
What do we expect from Multiple-choice QA Systems? (2020.findings-emnlp)
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| Challenge: | Recent work has shown that good performance on a dataset might not correlate well with human’s expectations from models that “understand” language. |
| Approach: | They propose to train a top performing multiple choice question answering model against expectations from models that "understand" language. |
| Outcome: | The proposed training paradigm leads to a model that performs on par with the original model while better satisfying our expectations. |