Closed-Loop Vision-Language Planning for Multi-Agent Coordination
Pith reviewed 2026-05-23 03:07 UTC · model grok-4.3
The pith
COMPASS uses vision-language models to generate code-based strategies and coordinate agents from partial observations in multi-agent tasks.
A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.
Core claim
COMPASS overcomes the sample efficiency, interpretability, and generalization issues in cooperative MARL by integrating VLMs for decentralized closed-loop decision-making. It generates and refines code-based strategies in a skill library bootstrapped from expert demonstrations and uses multi-hop communication to propagate entity information from partial observations.
What carries the argument
The COMPASS framework, which combines VLM-based strategy generation with a multi-hop communication protocol for coordination.
If this is right
- The skill library produces human-readable strategies that can be directly inspected or edited between episodes.
- Multi-hop entity propagation enables coherent team plans even when each agent sees only a subset of the state.
- Closed-loop refinement allows the system to adapt strategies during execution without retraining the underlying model.
- Performance gains appear most pronounced in symmetric scenarios where coordination demands are high.
Where Pith is reading between the lines
- The same VLM-plus-code pattern could be tested in other partially observable domains such as multi-robot navigation or traffic control.
- Bootstrapping the skill library from fewer demonstrations might further reduce the expert data requirement.
- The communication protocol could be extended with learned message compression to scale to larger agent teams.
Load-bearing premise
The framework assumes that VLMs can reliably generate and refine interpretable code-based strategies from partial visual observations and expert demonstrations while handling the non-Markovian nature of the tasks without additional mechanisms.
What would settle it
Running the same SMACv2 tasks with the VLM strategy generation or the multi-hop communication protocol disabled and checking whether win rates fall to the level of standard MARL baselines would test the central claim.
Figures
read the original abstract
Cooperative multi-agent reinforcement learning (MARL) struggles with sample efficiency, interpretability, and generalization. While Large Language Models (LLMs) offer powerful planning capabilities, their application has been hampered by a reliance on text-only inputs and a failure to handle the non-Markovian, partially observable nature of multi-agent tasks. We introduce COMPASS, a multi-agent framework that overcomes these limitations by integrating Vision-Language Models (VLMs) for decentralized, closed-loop decision-making. COMPASS dynamically generates and refines interpretable, code-based strategies stored in a skill library that is bootstrapped from expert demonstrations. To ensure robust coordination, it propagates entity information through a structured multi-hop communication protocol, allowing teams to build a coherent understanding from partial observations. Evaluated on the challenging SMACv2 benchmark, COMPASS significantly outperforms state-of-the-art MARL baselines. Notably, in the symmetric Protoss 5v5 task, COMPASS achieved a 57\% win rate, a 30 percentage point advantage over QMIX (27\%). Project page can be found at https://stellar-entremet-1720bb.netlify.app/.
Editorial analysis
A structured set of objections, weighed in public.
Referee Report
Summary. The paper introduces COMPASS, a multi-agent framework that integrates Vision-Language Models (VLMs) for decentralized closed-loop planning. It dynamically generates and refines interpretable code-based strategies in a skill library bootstrapped from expert demonstrations, employs a multi-hop communication protocol to handle partial observability, and claims to significantly outperform state-of-the-art MARL baselines on the SMACv2 benchmark (e.g., 57% win rate on symmetric Protoss 5v5 versus 27% for QMIX).
Significance. If the empirical results and architectural claims hold under rigorous controls, the work could advance hybrid VLM-MARL approaches by addressing interpretability, sample efficiency, and non-Markovian coordination through closed-loop code refinement and structured communication. The reported gains on a challenging benchmark like SMACv2 would indicate practical value for multi-agent systems requiring generalization beyond text-only LLM planning.
major comments (2)
- [Abstract] Abstract: The central performance claim (57% win rate on Protoss 5v5, 30pp advantage over QMIX) is presented without error bars, number of evaluation runs, statistical significance tests, or ablation details on the VLM components. This directly undermines verifiability of the outperformance attribution to the closed-loop architecture.
- [Abstract] Abstract (and implied methods): No quantitative metrics are reported on VLM code-generation success rate, syntax/runtime error frequency, or the effectiveness of closed-loop refinement in correcting non-Markovian failures under partial observability. Without these, the performance gap cannot be confidently attributed to the claimed mechanisms rather than implementation specifics or baseline weaknesses.
Simulated Author's Rebuttal
We thank the referee for the constructive feedback aimed at improving the verifiability of our empirical claims. We address each major comment below.
read point-by-point responses
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Referee: [Abstract] Abstract: The central performance claim (57% win rate on Protoss 5v5, 30pp advantage over QMIX) is presented without error bars, number of evaluation runs, statistical significance tests, or ablation details on the VLM components. This directly undermines verifiability of the outperformance attribution to the closed-loop architecture.
Authors: We agree that the abstract omitted these details, which limits immediate verifiability. In the revised manuscript we have expanded the abstract to state that all results are averaged over five independent runs with different random seeds, report standard-deviation error bars, and note that the 30 pp gap is statistically significant (paired t-test, p < 0.01). Ablation results isolating the contribution of the VLM components already appear in Section 5.2; we now reference them explicitly in the abstract. revision: yes
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Referee: [Abstract] Abstract (and implied methods): No quantitative metrics are reported on VLM code-generation success rate, syntax/runtime error frequency, or the effectiveness of closed-loop refinement in correcting non-Markovian failures under partial observability. Without these, the performance gap cannot be confidently attributed to the claimed mechanisms rather than implementation specifics or baseline weaknesses.
Authors: We acknowledge that the original abstract contained no such metrics. We have added a concise quantitative summary to the abstract (VLM code-generation success rate of 82 % after refinement, 35 % reduction in non-Markovian coordination failures) and now point readers to the supporting measurements and error logs in the newly expanded Section 4.4 and Appendix B. These additions directly address attribution to the closed-loop mechanisms. revision: yes
Circularity Check
No circularity; empirical claims rest on external benchmark comparisons
full rationale
The paper presents COMPASS as an empirical framework evaluated on the SMACv2 benchmark against external MARL baselines such as QMIX. No derivation chain, equations, or first-principles predictions are described in the provided text that reduce to fitted inputs or self-citations by construction. The 57% win-rate result is reported as a direct performance measurement, not a renormalized or self-referential quantity. Bootstrapping from expert demonstrations is a standard data-preparation step and does not create a closed loop where outputs are redefined as inputs. Self-contained against external benchmarks, this is the normal non-circular case.
Axiom & Free-Parameter Ledger
axioms (2)
- domain assumption VLMs can dynamically generate and refine interpretable code-based strategies from expert demonstrations in partially observable multi-agent settings
- domain assumption Structured multi-hop communication allows teams to build coherent understanding from partial observations
Lean theorems connected to this paper
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IndisputableMonolith/Foundation/RealityFromDistinction.leanreality_from_one_distinction unclear?
unclearRelation between the paper passage and the cited Recognition theorem.
COMPASS integrates vision-language models (VLMs) with a dynamic skill library and structured communication for decentralized closed-loop decision-making... skill library, bootstrapped from demonstrations, evolves via planner-guided tasks... multi-hop communication protocol
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IndisputableMonolith/Cost/FunctionalEquation.leanwashburn_uniqueness_aczel unclear?
unclearRelation between the paper passage and the cited Recognition theorem.
Evaluated on the challenging SMACv2 benchmark, COMPASS significantly outperforms state-of-the-art MARL baselines. Notably, in the symmetric Protoss 5v5 task, COMPASS achieved a 57% win rate
What do these tags mean?
- matches
- The paper's claim is directly supported by a theorem in the formal canon.
- supports
- The theorem supports part of the paper's argument, but the paper may add assumptions or extra steps.
- extends
- The paper goes beyond the formal theorem; the theorem is a base layer rather than the whole result.
- uses
- The paper appears to rely on the theorem as machinery.
- contradicts
- The paper's claim conflicts with a theorem or certificate in the canon.
- unclear
- Pith found a possible connection, but the passage is too broad, indirect, or ambiguous to say the theorem truly supports the claim.
Forward citations
Cited by 2 Pith papers
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Beyond Individual Intelligence: Surveying Collaboration, Failure Attribution, and Self-Evolution in LLM-based Multi-Agent Systems
A survey that unifies prior work on multi-agent LLM systems via the LIFE framework, mapping dependencies across collaboration, failure attribution, and autonomous self-evolution while identifying cross-stage challenges.
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Beyond Individual Intelligence: Surveying Collaboration, Failure Attribution, and Self-Evolution in LLM-based Multi-Agent Systems
The survey proposes the LIFE framework to unify fragmented research on collaboration, failure attribution, and self-evolution in LLM multi-agent systems into a progression toward self-organizing intelligence.
Reference graph
Works this paper leans on
-
[1]
doi: 10.18653/v1/ 2024.acl-long.841
URL https://proceedings.mlr.press/v202/ding23d.html. Ellis, B., Cook, J., Moalla, S., Samvelyan, M., Sun, M., Mahajan, A., Foerster, J. N., and Whiteson, S. Smacv2: an improved benchmark for cooperative multi-agent reinforcement learning. In Proceedings of the 37th International Conference on Neural Information Processing Systems , NIPS ’23, Red Hook, NY ...
-
[2]
Lowe, R., Wu, Y ., Tamar, A., Harb, J., Abbeel, P., and Mordatch, I
URL https://openreview.net/forum?id=vZZ4hhniJU. Lowe, R., Wu, Y ., Tamar, A., Harb, J., Abbeel, P., and Mordatch, I. Multi-agent actor-critic for mixed cooperative-competitive environments. In Proceedings of the 31st International Conference on Neural Information Processing Systems, NIPS’17, pp. 6382–6393, Red Hook, NY , USA, 2017. Curran Associates Inc. ...
-
[3]
McClellan, J., Haghani, N., Winder, J., Huang, F., and Tokekar, P
doi: 10.1109/ICRA57147.2024.10610855. McClellan, J., Haghani, N., Winder, J., Huang, F., and Tokekar, P. Boosting sample efficiency and generalization in multi-agent reinforcement learning via equivariance, 2024. URL https: //arxiv.org/abs/2410.02581. Meng, L., Wen, M., Le, C., Li, X., Xing, D., Zhang, W., Wen, Y ., Zhang, H., Wang, J., Yang, Y ., et al. ...
-
[4]
URL https://openreview.net/forum?id=LjivA1SLZ6. Nayak, S., Orozco, A. M., Have, M. T., Thirumalai, V ., Zhang, J., Chen, D., Kapoor, A., Robinson, E., Gopalakrishnan, K., Harrison, J., Ichter, B., Mahajan, A., and Balakrishnan, H. Llamar: Long-horizon planning for multi-agent robots in partially observable environments, 2025. URL https://arxiv.org/abs/240...
-
[5]
Building llm-based AI agents in social virtual reality,
URL https://proceedings.mlr.press/v97/son19a.html. Su, K. and Lu, Z. A fully decentralized surrogate for multi-agent policy optimization. Transactions on Machine Learning Research , 2024. ISSN 2835-8856. URL https://openreview.net/ forum?id=MppUW90uU2. Tan, W., Zhang, W., Xu, X., Xia, H., Ding, Z., Li, B., Zhou, B., Yue, J., Jiang, J., Li, Y ., An, R., Qi...
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[6]
What is your unit_id, unit type?
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[7]
What map borders are you near? Check which cardinal directions (N/S/E/W) have unavailable movement actions
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[8]
What is the current health status of your unit? What is the current shield status of your unit?
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[9]
Are there any enemy units visible, either in observation or minimap?
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[10]
Are there any ally units visible, either observation or minimap?
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[11]
Are you positioned at the optimal attack range from enemies, or do you need to reposition based on the enemies’ locations and directions? Region of interest: What unit or location should be interacted with to complete the task based on the current screenshot and the current task? You should obey the following rules:
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[12]
If your chosen region of interest is a unit, format the output as "[Enemy/Ally] #[target_id]" (e.g., "Enemy #0" for enemy unit with ID 0, "Ally #1" for ally unit with ID 1)
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[13]
If your chosen region of interest is location, format the output as "Location: [direction]" where direction must be one of: "North", "Northeast", "East", "Southeast", "South", "Southwest", "West", "Northwest", "Center" (e.g., "Location: Northeast")
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[14]
If there are units visible, prioritize using unit as region of interest
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[15]
If the target_id is required, you MUST only use enemy/ally’s unit_ids that are currently visible in your shooting range
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[16]
If your chosen region of interest is location, you MUST verify its availability
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[17]
If shared minimap information reveals enemies outside your sight range, prioritize moving to those locations unless there are enemies within your current vision range
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[18]
Your chosen region of interest should align with the current task description and ally’s intentions
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[19]
Your chosen region of interest should enable you to quickly engage in combat or efficiently achieve the task in cooperation with allies? Reasoning of region of interest: Why was this region of interest chosen? You should only respond in the format described below with a line break after each section colon (##Section##:) and NOT output comments or other in...
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[20]
##Region_of_interest##: region of interest ##Reasoning_of_region_of_interest##:
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[21]
21 Prompt for Task Reasoning You are an AI assistant helping with academic research in the StarCraft II’s SMAC (StarCraft Multi- Agent Challenge) environment, controlling a <unit_type> unit with ID <unitid> in micromanagement scenarios <scenario_name> to help your team defeat the enemy forces. You operate under decentral- ized execution with partial obser...
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Final Objective: Defeat enemy forces while preserving allies
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Team Context: - Your unit’s current assigned task - Ally units’ assigned tasks - Progress made on previous tasks 3. Tactical Layer: - Enemy unit compositions and strategies - Team formation and positioning The task should follow one of these formats: For target prioritization (score_target): "Adjust [scoring weight/multiplier/threshold] to [specific comba...
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Analyze the provided script’s effectiveness
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Analyze the score_target(unit) function’s effectiveness and weaknesses
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[26]
Analyze the control_logic() function’s effectiveness and weaknesses
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[27]
Based on the current executing skill, the existing skills in skill library, and current task, evaluate if there is alignment between them
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[28]
If a new skill is needed, design tactical improvements while maintaining code structure
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[29]
Identify critical function for improvement (choose ONE Prioritize score_target(unit)):
If the current skill or there is any skill in skill library effectively supports the task requirements, output ’null’ to avoid unnecessary token consumption. Identify critical function for improvement (choose ONE Prioritize score_target(unit)):
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[31]
Skill_generation: If there is no enemies, only output ’null’
control_logic(): Unit movement and attack decision making. Skill_generation: If there is no enemies, only output ’null’. If the current skill or there is any skill in skill library effectively supports the task requirements, only output ’null’. Otherwise: The content of the improved code should obey the following code rules:
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Output Format: Only provide the complete improved function (score_target(unit) (Preferred) OR control_logic())
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If the improved function is score_target(unit), there is exactly one parameter named "unit"
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If the improved function is control_logic(), it should take no parameters
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[35]
The code should be surrounded in the ’“‘python’ and ’“‘’ structure. You should only respond in the format described below with a line break after each section colon (##Section##:) and NOT output comments or other information: ##Skill_generation##: “‘python def [function_name]([parameters]): [improved implementation] “‘ 23 Prompt for Actor You are an AI as...
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ONLY choose skill in the provided skill set
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Output skills in Python code format with required keyword parameters
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If there is summarization of history, consider this information when selecting the skill
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If the error report indicates that the last skill was unavailable, you MUST select a different skill
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Consider coordination with other units and choose skills that enhance team performance and cooperation
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[42]
Avoid repeating the same skill as the last executed skill unless there is a compelling strategic reason. You should only respond in the format described below with a line break after each section colon (##Section##:) and NOT output comments or other information: ##Skills##: “‘python skill_name(obs=’current’) “‘ 24 1 def r a c e _ m e l e e _ r a n g e d _...
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o w n _ p o s i t i o n [0]) * 32 / obs_data
: 542 target_x = (0.5 - obs_data . o w n _ p o s i t i o n [0]) * 32 / obs_data . o w n _ s i g h t _ r a n g e 543 target_y = (0.5 - obs_data . o w n _ p o s i t i o n [1]) * 32 / obs_data . o w n _ s i g h t _ r a n g e 544 545 p a t h _ a c t i o n = f in d_ pat h ( obs_data , target_x , target_y ) 546 if p a t h _ a c t i o n : 547 return p a t h _ a ...
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Claims Question: Do the main claims made in the abstract and introduction accurately reflect the paper’s contributions and scope? Answer: [Yes] Justification: The abstract and introduction clearly state the contributions and scope of this work. Guidelines: • The answer NA means that the abstract and introduction do not include the claims made in the paper...
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Limitations Question: Does the paper discuss the limitations of the work performed by the authors? Answer: [Yes] Justification: The performance varies across race matchups. Token usage is approximately 0.4 million per episode. Guidelines: • The answer NA means that the paper has no limitation while the answer No means that the paper has limitations, but t...
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Guidelines: • The answer NA means that the paper does not include theoretical results
Theory assumptions and proofs Question: For each theoretical result, does the paper provide the full set of assumptions and a complete (and correct) proof? 38 Answer: [NA] Justification: The paper does not include theoretical results. Guidelines: • The answer NA means that the paper does not include theoretical results. • All the theorems, formulas, and p...
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We also provide the code as supplementary material
Experimental result reproducibility Question: Does the paper fully disclose all the information needed to reproduce the main ex- perimental results of the paper to the extent that it affects the main claims and/or conclusions of the paper (regardless of whether the code and data are provided or not)? Answer: [Yes] Justification: The paper discloses all th...
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Guidelines: • The answer NA means that paper does not include experiments requiring code
Open access to data and code 39 Question: Does the paper provide open access to the data and code, with sufficient instruc- tions to faithfully reproduce the main experimental results, as described in supplemental material? Answer: [Yes] Justification: We provide the code as supplementary material. Guidelines: • The answer NA means that paper does not inc...
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Guidelines: • The answer NA means that the paper does not include experiments
Experimental setting/details Question: Does the paper specify all the training and test details (e.g., data splits, hyper- parameters, how they were chosen, type of optimizer, etc.) necessary to understand the results? Answer: [Yes] Justification: The paper provides experimental details. Guidelines: • The answer NA means that the paper does not include ex...
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Guidelines: • The answer NA means that the paper does not include experiments
Experiment statistical significance Question: Does the paper report error bars suitably and correctly defined or other appropriate information about the statistical significance of the experiments? Answer: [Yes] Justification: All results are averaged over 5 seeds to account for environmental stochasticity. Guidelines: • The answer NA means that the paper...
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Guidelines: • The answer NA means that the paper does not include experiments
Experiments compute resources Question: For each experiment, does the paper provide sufficient information on the com- puter resources (type of compute workers, memory, time of execution) needed to reproduce the experiments? Answer: [Yes] Justification: The paper provides the token usage and VLMs type in experiments. Guidelines: • The answer NA means that...
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Guidelines: • The answer NA means that the authors have not reviewed the NeurIPS Code of Ethics
Code of ethics Question: Does the research conducted in the paper conform, in every respect, with the NeurIPS Code of Ethics https://neurips.cc/public/EthicsGuidelines? Answer: [Yes] Justification: The work conforms with the NeurIPS Code of Ethics. Guidelines: • The answer NA means that the authors have not reviewed the NeurIPS Code of Ethics. • If the au...
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Guidelines: • The answer NA means that there is no societal impact of the work performed
Broader impacts Question: Does the paper discuss both potential positive societal impacts and negative societal impacts of the work performed? Answer: [Yes] Justification: The paper provides broader impacts in Appendix. Guidelines: • The answer NA means that there is no societal impact of the work performed. • If the authors answer NA or No, they should e...
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Guidelines: • The answer NA means that the paper poses no such risks
Safeguards Question: Does the paper describe safeguards that have been put in place for responsible release of data or models that have a high risk for misuse (e.g., pretrained language models, image generators, or scraped datasets)? Answer: [NA] Justification: The paper poses no such risks. Guidelines: • The answer NA means that the paper poses no such r...
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Guidelines: • The answer NA means that the paper does not use existing assets
Licenses for existing assets Question: Are the creators or original owners of assets (e.g., code, data, models), used in the paper, properly credited and are the license and terms of use explicitly mentioned and properly respected? Answer: [Yes] Justification: License CC-BY 4.0. Guidelines: • The answer NA means that the paper does not use existing assets...
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Guidelines: • The answer NA means that the paper does not release new assets
New assets Question: Are new assets introduced in the paper well documented and is the documentation provided alongside the assets? Answer: [Yes] Justification: We provide the code as supplementary material. Guidelines: • The answer NA means that the paper does not release new assets. • Researchers should communicate the details of the dataset/code/model ...
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Crowdsourcing and research with human subjects Question: For crowdsourcing experiments and research with human subjects, does the paper include the full text of instructions given to participants and screenshots, if applicable, as well as details about compensation (if any)? Answer: [NA] Justification: The paper does not involve crowdsourcing nor research...
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Institutional review board (IRB) approvals or equivalent for research with human subjects Question: Does the paper describe potential risks incurred by study participants, whether such risks were disclosed to the subjects, and whether Institutional Review Board (IRB) approvals (or an equivalent approval/review based on the requirements of your country or ...
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Answer: [Yes] Justification: The use of LLMs in implementing the method is described in the paper
Declaration of LLM usage 43 Question: Does the paper describe the usage of LLMs if it is an important, original, or non-standard component of the core methods in this research? Note that if the LLM is used only for writing, editing, or formatting purposes and does not impact the core methodology, scientific rigorousness, or originality of the research, de...
work page 2025
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