Challenge: Existing studies have tested language models' ability to reason over time and space in isolation or only in simple or artificial environments.
Approach: They present a dataset of 320k prompts covering 289 cities in 217 countries and 37 time zones to evaluate their ability to jointly reason over time and space.
Outcome: The proposed models perform well on reasoning tasks involving only temporal knowledge, but performance remains constrained on tasks that require connecting temporal and geographic information.

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Do Language Models Have a Common Sense regarding Time? Revisiting Temporal Commonsense Reasoning in the Era of Large Language Models (2023.emnlp-main)

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Challenge: Temporal reasoning is a vital component of human communication and understanding, yet remains an underexplored area within the context of Large Language Models (LLMs).
Approach: They propose to use 3 prompting strategies to evaluate 8 different LLMs across 6 datasets and 2 Code Generation LMs to perform the analysis.
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Living in the Moment: Can Large Language Models Grasp Co-Temporal Reasoning? (2024.acl-long)

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Challenge: Current temporal reasoning datasets are limited to questions about single or isolated events, falling short in mirroring the realistic temporal characteristics involving concurrent nature and intricate temporal interconnections.
Approach: They propose a co-temporal Question Answering benchmark that contains four co-time scenarios with 4,748 samples for evaluating the co-timing abilities of large language models.
Outcome: The proposed benchmarks show that current LLMs struggle on CoTempQA tasks even when enhanced with Chain of Thought methodologies.
Reasoning Over Space: Enabling Geographic Reasoning for LLM-Based Generative Next POI Recommendation (2026.acl-long)

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Challenge: Existing LLM-based recommenders lack explicit modeling of geographic signals . without explicit modeling geographic signals, recommenders struggle to capture core mobility patterns .
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GeoArena: Evaluating Open-World Geographic Reasoning in Large Vision-Language Models (2026.acl-long)

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Challenge: Existing evaluation paradigms for geographic reasoning are outcome-centric and focus on label matching, leaving the underlying linguistic reasoning chains as unexamined black boxes.
Approach: They propose a dynamic, human-preference-based evaluation framework for benchmarking open-world geographic reasoning.
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There’s a Time and Place for Reasoning Beyond the Image (2022.acl-long)

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Challenge: Currently, most work in this area is focused on reasoning with local evidence, but there is a gap between a state-of-the-art joint model and human performance.
Approach: They propose a model that can be used to infer, associate, and reason with contextual information from other sources to establish a more complete picture.
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Chat-TS: Enhancing Multi-Modal Reasoning Over Time-Series and Natural Language Data (2026.eacl-long)

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Challenge: Large language models are being rapidly applied across many fields such as healthcare, finance, transportation, and energy.
Approach: They propose a large language model framework that integrates time-series tokens into LLMs’ vocabulary, enhancing its reasoning ability over time- and textual data.
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Language Models Still Struggle to Zero-shot Reason about Time Series (2024.findings-emnlp)

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Challenge: Time series are critical for decision-making in fields like finance and healthcare.
Approach: They propose a framework for time series reasoning that includes formal tasks and a dataset of multi-scale time series paired with text captions across ten domains.
Outcome: The proposed framework combines formal tasks and a dataset of multi-scale time series paired with text captions across ten domains to examine whether language models achieve three forms of reasoning.
A Picture is Worth A Thousand Numbers: Enabling LLMs Reason about Time Series via Visualization (2025.naacl-long)

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Challenge: Large language models (LLMs) have demonstrated powerful reasoning abilities across multiple domains, but have been underexplored for time-series reasoning (TsR)
Approach: They propose a prompt-based solution for evaluating large language models’ TsR performance.
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Can Language Models Serve as Temporal Knowledge Bases? (2022.findings-emnlp)

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Challenge: Existing studies have only considered language models as knowledge bases in a static setting . memorizing conflicting information is still challenging for LMs and hinders memorization of other unrelated one-to-one relationships.
Approach: They propose two requirements for treating language models as temporal knowledge bases . they propose a dataset which is aimed at probing temporally-scoped knowledge .
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TimeBench: A Comprehensive Evaluation of Temporal Reasoning Abilities in Large Language Models (2024.acl-long)

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Challenge: Grasping the concept of time is a fundamental facet of human cognition.
Approach: They propose a hierarchical temporal reasoning benchmark that covers a broad spectrum of temporal phenomena.
Outcome: The proposed benchmark shows that state-of-the-art LLMs are still far behind humans in temporal reasoning .

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