| Challenge: | Existing literature on explainability of information retrieval has focused on illustrating the concept of relevance concerning a retrieval model. |
| Approach: | They propose to add terms to a document to improve its ranking to answer the question of which words played a role in not being favored by a retrieval model. |
| Outcome: | The proposed framework predicts counterfactuals for statistical and deep-learning models. |
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Counterfactuals of Counterfactuals: a back-translation-inspired approach to analyse counterfactual editors (2023.findings-acl)
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George Filandrianos, Edmund Dervakos, Orfeas Menis Mastromichalakis, Chrysoula Zerva, Giorgos Stamou
| Challenge: | Existing explanations for classifiers are counterfactual or contrastive . lack of universal ground truth for counterf actual edits hinders their evaluation . |
| Approach: | They propose a back translation-inspired evaluation methodology that utilises earlier outputs of the explainer as ground truth proxies to investigate the consistency of explainers. |
| Outcome: | The proposed method can provide valuable insights into the behaviour of predictor and explainer models and infer patterns that would otherwise be obscured. |
Consistent Document-level Relation Extraction via Counterfactuals (2024.findings-emnlp)
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| Challenge: | Document-level relation extraction models trained on factual data exhibit inconsistent behavior, relying on spurious signals such as specific entities and external knowledge to extract triples. |
| Approach: | They propose a counterfactual data generation approach for document-level relation extraction datasets using entity replacement to generate triples from factual data. |
| Outcome: | The proposed approach extracts triples from factual data but fails on counterfactual modification. |
Pathway to Relevance: How Cross-Encoders Implement a Semantic Variant of BM25 (2025.emnlp-main)
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| Challenge: | Interpretability in information retrieval (IR) models is coarse-grained and poorly understood . a cross-encoder model extracts traditional relevance signals, such as term frequency and inverse document frequency . |
| Approach: | They analyze how a common IR model extracts traditional relevance signals . this is similar to the probabilistic ranking function BM25 . |
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Discovering Biases in Information Retrieval Models Using Relevance Thesaurus as Global Explanation (2024.emnlp-main)
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| Challenge: | Currently, local explanations are not effective in predicting the model’s behavior on unseen texts. |
| Approach: | They propose a method to build a relevance thesaurus containing semantically relevant query term and document term pairs which can augment BM25 scoring functions to better approximate the neural model’s predictions. |
| Outcome: | The proposed method can augment BM25 scoring functions to better approximate the neural relevance model’s predictions. |
Counterfactual Inference for Text Classification Debiasing (2021.acl-long)
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| Challenge: | Existing methods to capture unintended dataset biases are expensive and require elaborate balancing strategies. |
| Approach: | They propose a model-agnostic text classification debiasing framework which can effectively avoid employing data manipulations or designing balancing mechanisms. |
| Outcome: | The proposed framework can effectively avoid data manipulations or designing balancing mechanisms to capture unintended dataset biases. |
What if This Modified That? Syntactic Interventions with Counterfactual Embeddings (2021.findings-acl)
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| Challenge: | Prior art aims to uncover meaningful properties within model representations, but it is unclear how faithfully such probes portray information that the models actually use. |
| Approach: | They propose a technique for generating counterfactual embeddings within models . they produce evidence that some models use a tree-distancelike representation of syntax . |
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Deep Relevance Ranking Using Enhanced Document-Query Interactions (D18-1)
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| Challenge: | Document relevance ranking is the task of ranking documents from a large collection using the query and the text of each document only. |
| Approach: | They propose to use convolutional n-gram matching to inject rich context-sensitive encodings into their models, inspired by PACRR's convolution-based ngram matching features. |
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SHAP-Based Explanation Methods: A Review for NLP Interpretability (2022.coling-1)
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| Challenge: | Existing models with opacity problems have been proposed to address this problem. |
| Approach: | They propose a unified local-interpretability framework with a rigorous theoretical foundation on the game-theoretic concept of Shapley values. |
| Outcome: | The proposed framework is based on the Shapley-value-based model explanations. |
Retrieval Helps or Hurts? A Deeper Dive into the Efficacy of Retrieval Augmentation to Language Models (2024.naacl-long)
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| Challenge: | Large language models (LMs) excel in retrieving popular facts, but encounter difficulty with infrequent entity-relation pairs compared to retrievers. |
| Approach: | They propose to use a WiTQA dataset to explore the effects of combinations of entities and relations on LMs. |
| Outcome: | The proposed model can retain popular relations of less common entities while retaining the same popular relations. |
CRASS: A Novel Data Set and Benchmark to Test Counterfactual Reasoning of Large Language Models (2022.lrec-1)
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| Challenge: | CRASS data set and benchmark provide novel test scheme to evaluate large language models . authors present and explain the CRAS data set, a novel basis to test reasoning and natural language understanding of LLMs . |
| Approach: | They introduce a new test scheme utilizing questionized counterfactual conditionals to evaluate large language models. |
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