Challenge: Existing datasets focus on explicit causality in structured text, providing limited support for detecting implicit causal expressions.
Approach: They propose a dataset of Reddit posts annotated across four causal tasks . they use a binary causal classification, explicit vs. implicit causality, cause–effect span extraction and causal gist generation to bridge causal detection and reasoning over informal discourse.
Outcome: The proposed dataset analyzes 10,120 Reddit posts discussing public health related to the COVID-19 pandemic.

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The Causal News Corpus: Annotating Causal Relations in Event Sentences from News (2022.lrec-1)

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Challenge: Existing annotation guidelines for event causality focus on only explicit relations or clauses.
Approach: They propose an annotation schema for event causality that addresses these concerns . they annotated 3,559 event sentences from protest event news with labels on whether it contains causal relations or not.
Outcome: The proposed annotation schema for event causality addresses these concerns . it performs well with 81.20% F1 score on test set and 83.46% in 5-folds cross-validation .
Large Language Models and Causal Inference in Collaboration: A Comprehensive Survey (2025.findings-naacl)

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Challenge: Large Language Models (LLMs) have shown great potential to enhance Natural Language Processing (NLP) models in areas such as predictive accuracy, fairness, robustness, and explainability.
Approach: They evaluate or improve generative Large Language Models from a causal perspective in areas such as reasoning capacity, fairness and safety issues, explainability, and handling multimodality.
Outcome: The proposed models can be used to perform causal relationship discovery and causal effect estimation tasks.
CausalNLP Tutorial: An Introduction to Causality for Natural Language Processing (2022.emnlp-tutorials)

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Challenge: Establishing causal relationships is a fundamental goal of scientific research . lack of clear definitions, notations, benchmark datasets, and challenges remains .
Approach: They introduce the fundamentals of causal discovery and causal effect estimation to the natural language processing audience and provide an overview of causal perspectives to NLP problems.
Outcome: This tutorial introduces the fundamentals of causal discovery and causal effect estimation to the natural language processing audience and provides an overview of causal perspectives to NLP problems.
Exploring the Potential of ChatGPT on Sentence Level Relations: A Focus on Temporal, Causal, and Discourse Relations (2024.findings-eacl)

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Challenge: Recent studies have demonstrated ChatGPT's remarkable few-shot, even zero-shot learning abilities when compared to other models.
Approach: They quantitatively evaluate the performance of ChatGPT on inter-sentential relations such as temporal relations, causal relations, and discourse relations.
Outcome: The proposed model performs well on temporal relations, causal relations, and discourse relations.
Causal Inference in Natural Language Processing: Estimation, Prediction, Interpretation and Beyond (2022.tacl-1)

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Challenge: causality has not had the same importance in natural language processing, says aaron e. smith . he says research on causality in NLP remains scattered across domains without unified definitions .
Approach: They propose to consolidate research on causality in NLP across academic areas . they explore potential uses of causal inference to improve robustness, fairness, interpretability .
Outcome: The proposed method is a unified overview of causal inference for the NLP community.
Causal Explanation Analysis on Social Media (D18-1)

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Challenge: Understanding causal explanations is an important psychological factor linked to physical and mental health.
Approach: They propose to automate causal explanation analysis by building on discourse parsing and using a hierarchy of Bidirectional LSTMs to identify the specific phrase that is the explanation.
Outcome: The proposed subtasks achieve strong accuracies but differ in their approaches . the proposed sub task is compared with the previous task and is able to identify the specific phrase that is the explanation.
CausalDialogue: Modeling Utterance-level Causality in Conversations (2023.findings-acl)

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Challenge: Despite widespread adoption, neural conversation models have yet to exhibit natural chat capabilities with humans . despite their widespread adoption in society, chatbots have yet not shown natural chat capability .
Approach: They propose a causality-enhanced method to enhance the impact of causality at the utterance level in training neural conversation models.
Outcome: The proposed method improves diversity and agility of loss functions and still needs improvement . the proposed method is based on a CausalDialogue dataset .
Causal Inference with Large Language Model: A Survey (2025.findings-naacl)

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Challenge: Existing causal inference frameworks do not match human judgment in several key areas, such as domain knowledge, logical inference, and cultural context.
Approach: They propose to apply large language models to causal inference tasks . they summarize the main causal problems and approaches and compare their results .
Outcome: The proposed methods are compared with traditional methods in healthcare, finance, and economics.
Can Large Language Models Infer Causal Relationships from Real-World Text? (2026.acl-long)

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Challenge: Existing work evaluating large language models relies on synthetic or simplified texts with explicit causal relationships.
Approach: They develop a benchmark to evaluate LLMs' ability to infer causal relationships from texts . they use a dataset of texts with different levels of explicitness and complexity .
Outcome: The proposed benchmark is the first-ever real-world dataset for this task.
Pipeline for modeling causal beliefs from natural language (2023.acl-demo)

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Challenge: Existing methods to analyze language data for psychological causality are difficult to advance as they do not isolate cognitive mechanisms.
Approach: They propose a pipeline that leverages a Large Language Model to identify causal claims made in natural language documents and applies a clustering algorithm to group causal claims based on their semantic topics.
Outcome: The proposed pipeline analyzes the Covid-19 vaccine in tweets and generates a causal claim network.

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