REVIEW 3 major objections 6 minor 11 references
Overview of the Sensemaking Task at the ELOQUENT 2025 Lab: LLMs as Teachers, Students and Evaluators
T0 review · 3 major / 6 minor · reviewed 2026-08-06 · deepseek-v4-flash
Pith's one-line read LLM-as-a-Judge systems rate garbled and mismatched question-answer pairs as acceptable, so they are unreliable scorers of answer quality.
desk verdict A transparent shared-task overview with a real over-leniency signal, but the headline overstates the evidence by calling adversarial scores 'acceptable' without per-item human labels or a defined threshold. read the letter →
The pith
A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.
The reading
What carries the argument
The load-bearing mechanism is the adversarial test set: deliberately corrupted question-answer pairs created by swapping questions between sections, shuffling words in answers, replacing answers with random text, and pairing questions with answers that are topically similar but unrelated. These items are the yardstick that reveals whether an evaluator actually checks the match between question, answer, and source text. The paper also uses ROUGE-L Recall and a brief manual Likert questionnaire as reference standards for judging whether evaluator scores are wrong, and relative ranking prompts for the Teacher evaluation.
What would settle it
Re-run the adversarial tests from Section 6 with a new LLM-as-a-Judge system and a fixed corruption set: if word-shuffled answers, swapped questions, and random-text answers all receive mean scores below 10 while intact pairs score above 80 on a 0–100 scale, the reported failure would not hold for that system. The paper's claim would also be weakened if a third reference standard—multiple expert raters, say—showed that the corrupted items genuinely deserve mid-range scores.
Extended reading notes
Core claim
On the paper's own terms, the discovery is that the LLM-as-a-Judge paradigm—using a large language model to assign a numeric quality score to an answer—fails precisely where automatic evaluation is most needed. When evaluator systems were given answers unrelated to the question, word-shuffled answers, or questions and answers drawn from mismatched source sections, average scores fell only to the 33–67 range instead of near zero. Evaluator rankings then disagreed with both ROUGE-L Recall and a small manual review, leading the paper to conclude that Evaluator ratings are generally unreliable. The same experiments showed that teacher-generated reference answers were often poor and that student systems leaned on shallow word overlap rather than genuine comprehension of the input.
Load-bearing premise
The paper's broad conclusion that Evaluator ratings are generally unreliable rests on treating ROUGE-L Recall and one rater's brief manual Likert scores as correct reference standards for when an answer is wrong; if those references are themselves weak, the disagreement could be between two imperfect metrics rather than a clear failure of the LLM judges.
Editorial extensions
If this is right
- Automatic evaluation pipelines that use an LLM as judge should include adversarial controls before trusting any numeric score.
- Disagreement between two evaluator systems on the same item can serve as a signal that the item is problematic and its score should be treated with caution.
- Question-generation quality remains hard to measure automatically; simple embedding-based coverage, diversity, and relevance metrics did not distinguish good from bad question sets.
- Student models need stronger grounding enforcement, since they performed acceptably on average but did not reliably confine answers to the source text.
- Adversarial inputs were the most reliable evaluation tool in this study, more trustworthy than either LLM judges or reference-based metrics alone.
Reading between the lines
- Beyond the paper: the pattern of failures suggests LLM judges are scoring topical similarity rather than logical entailment, so a well-formed answer about the same domain earns credit even when it answers a different question.
- The paper's agreement tables imply a testable extension: evaluator disagreement could be used as a cheap automatic detector of problematic items, since agreement drops on adversarial inputs.
- A natural next experiment is to turn the adversarial protocol itself into a benchmark sanity check for any new LLM-as-a-Judge system before deployment.
- Because the paper's reference standards are imperfect, the strongest part of the evidence is the face validity of the adversarial tests; a replication with independent expert raters would make the claim crisper.
Editorial analysis
A structured set of objections, weighed in public.
Referee Report
Summary. The paper reports on the ELOQUENT 2025 Sensemaking shared task, a three-track evaluation of LLM-based systems acting as Teachers (generating questions from source material), Students (answering those questions), and Evaluators (scoring answers on 0–100). With only two valid submissions per track plus GPT-4.1-nano baselines, the authors evaluate question generation using embedding-based coverage/diversity measures and LLM ranking, evaluate answering using ROUGE-L Recall and brief manual Likert ratings, and evaluate judging using adversarial inputs (swapped questions, shuffled words, and cross-material mismatches). The headline finding is that Evaluator systems are unreliable: adversarial scores drop from about 83 to 59/33/67 under different corruptions but remain far above what the authors argue should be near zero, leading them to conclude that LLM-as-a-Judge systems erroneously rate garbled or mismatched question-answer pairs as acceptable.
Significance. If the central claim holds, the paper provides a concrete, reproducible demonstration that LLM-as-a-Judge evaluation is over-lenient and can be fooled by surface-level perturbations, with direct implications for using LLMs in educational assessment and fact-checking pipelines. The main strengths are the adversarial test methodology (Tables 13–15; Figure 2), the comparison of multiple evaluation strategies (embedding metrics, LLM ranking, ROUGE-L, manual Likert), and the transparency about instability and limitations, including the appendix's systematic prompt-order and model-variation stability checks. These are valuable contributions. However, the central claim is currently stronger than the evidence: the paper never obtains human judgments on the adversarial items themselves, and it never defines what score constitutes 'acceptable.' The measured drops support over-leniency, but the specific wording 'erroneously rate as acceptable' requires either an external ground-truth label per item or a pre-specified threshold. This gap is fixable but should determine the revision's focus.
major comments (3)
- [Section 6.1–6.2 and the abstract] The claim that evaluators 'erroneously rate garbled question-answer pairs and answers to mixed-up questions as acceptable' is not directly established by Tables 13–15. The tables show mean adversarial scores of 59.44, 32.86, and 67.40 for Gemma-3-27b-it and 26.38, 13.33, and 49.38 for the baseline, but the paper provides no human judgments for these specific items and no predefined acceptability threshold. The assertions 'should fall close to 0' (Section 6.1) and 'almost always completely nonsensical' (Section 6.2) are offered as qualitative interpretation, not measured ground truth. Because Table 15's mismatched answers come from the same section and are often topically related, scores in the 30–60 range can reflect a partial-credit judgment ('partially useful') rather than a failure to notice the mismatch. Please either collect per-item human annotations on a sample of adversarial items and report the distribution of answers the authors consider 'acceptable,' or explicitly weaken the claim to 'notably over-lenient' and define the score threshold used for 'acceptable.'
- [Section 5.3 and Sections 6.5/6.7] The broader conclusion that 'Evaluator ratings are generally unreliable' is partly supported by disagreement between Evaluator scores and ROUGE-L Recall and by a quick manual evaluation. Section 5.3 states 'the examination per answer was very brief,' and Section 6.5 admits 'the inadequacies of ROUGE-L Recall.' With a single evaluator and a known-imperfect metric, the observed disagreement could be between two imperfect measures rather than evidence that the Evaluator is wrong. This does not undermine the adversarial results, which have face validity, but it does weaken the generalization drawn in Section 6.7. I recommend either adding adjudicated human labels for a sample of Evaluator-rated non-adversarial items or explicitly delimiting the 'unreliable' conclusion to the adversarial settings.
- [Section 6.2, final paragraph] The paper itself concedes that some Student systems correctly detect unanswerable questions and respond with a refusal or hedge, and that Evaluators then score such responses highly (Figure 2 shows the baseline receiving a score of 100 for such a response). This means the aggregate means in Table 15 conflate two different cases: (a) the Evaluator correctly rewards a Student's explicit denial that the question is answerable, and (b) the Evaluator fails to notice the mismatch and gives a high score to a genuinely off-topic answer. The claim in the abstract concerns case (b), but the current aggregate evidence cannot separate it from case (a). Please report the frequency of Student responses that explicitly flag unanswerability and provide a breakdown of adversarial scores for that subset, or otherwise acknowledge that the headline result aggregates over both behaviors.
minor comments (6)
- [Section 4.1, Eq. (2)] The quantile thresholds (0.5 and 0.95) in the relevance metric are introduced without justification; a short sensitivity analysis or a reference justifying these values would help readers interpret the Teacher auto-evaluation.
- [Section 5.2 / Table 10] The Pearson correlations of ROUGE-L Recall scores are computed on data that are heavily zero-inflated (e.g., Llama-3-8b has mean 02±11 in Table 6); rank correlations or a breakdown restricted to answerable items would be more informative.
- [Section 6.6 / Table 21] The text says Gemma-3-27b-it 'performs on par' with the GPT-4.1-nano baseline, and indeed the overall accuracies are both 0.50, but the per-class accuracies differ substantially (e.g., class-1 accuracy 0.01 vs 0.10); please state the chance level (0.33) and note the high variance so readers can judge whether these differences matter.
- [Appendix A] The stability tests vary the evaluation model and the order of entries in the prompt, but not the prompt wording itself; the claim in Section 7 that Teacher evaluation is 'significantly more stable' is therefore based on a single prompt template and should be phrased more cautiously.
- [Tables 13–15] The differences between non-adversarial and adversarial scores are reported as means ± standard deviation, and the standard deviations are large (e.g., 82.90±27.49 vs 67.40±40.42 in Table 15); reporting confidence intervals or paired difference tests would make the reliability of the observed drops clearer.
- [Throughout] There are several typos and spacing issues in the text, including 'whisper-turbomodel' (Section 3) and 'no anwers' (Table 9); a careful proofreading pass is recommended.
Circularity Check
No significant circularity: the central LLM-as-a-Judge claim rests on adversarial face validity and external references (ROUGE-L from [3], brief manual Likert ratings); the one same-family judge chain (GPT-4.1-mini judging GPT-4.1-nano) is explicitly cross-checked with the independent Gemini-2.5-flash, and the self-citations are non-load-bearing provenance.
full rationale
The paper's derivation chain is substantially self-contained. The central conclusion—that Evaluator systems using the LLM-as-a-Judge paradigm erroneously rate garbled and mismatched pairs as acceptable—is supported by adversarial probes whose face validity does not depend on any quantity fitted inside the paper: Tables 13-15 report mean scores of 13-67 on corrupted items versus 65-83 on intact ones, and the judgment that such items deserve near-zero scores is an explicit design prior (Section 6.1: 'Since these answers are almost always completely unrelated to the questions, the average rating should fall close to 0'), not a quantity derived from the paper's own equations. A challenge to that prior is a validity or correctness concern, not a circular reduction. Second, the reference standards used to assess Evaluators are external: ROUGE-L Recall (cited to [3], an outside work), the brief manual Likert questionnaire (Figure 6), and cross-model stability checks. The paper itself concedes the weakness of these references—Section 5.3: 'The time was limited, so the examination per answer was very brief' and Section 6.5: 'it should also be noted that some Student answers to adversarial questions do achieve a high rating purely because of the inadequacies of ROUGE-L Recall'—so the skeptical concern about reference quality is already acknowledged in the text and limits the scope of the claim rather than making it self-confirming. Third, the one near-self evaluation chain, GPT-4.1-mini judging the GPT-4.1-nano Teacher baseline, is explicitly examined in Section A and probed with Gemini-2.5-flash, an independent model family; the rankings barely change, and a human manual revision (Table 5) partially anchors the result. The baseline's test-set troubleshooting is disclosed ('we also troubleshooted the baseline on the test set. This means it is artificially stronger when compared to the contestant systems'), so it is not a hidden fit renamed as a prediction. Finally, the self-citations ([1], [8], [11]) are shared-task and team-report provenance, not load-bearing premises, and no uniqueness theorem or ansatz is imported from prior author work. One reporting inconsistency exists—Section 6.7's prose claims the Evaluator ranking places the GPT baseline last while Table 23 shows it highest (73.04)—but this is a data-integrity issue, and the adversarial evidence for the headline claim stands independently of it. Verdict: no significant circularity.
Assumptions & free parameters
free parameters (3)
- Relevance quantile thresholds =
0.5 and 0.95
- Text window size and overlap =
not specified
- ROUGE-L class bins =
[0,33), [33,66), [66,100]
assumptions (5)
- domain assumption The ability to create questions that assess understanding of arbitrary material indicates understanding of the material.
- domain assumption Adversarially corrupted inputs (shuffled words, swapped questions, unrelated answers) should receive scores close to zero.
- domain assumption ROUGE-L Recall and single-evaluator manual Likert ratings are adequate proxies for answer quality.
- domain assumption The submitted systems are representative enough to draw conclusions about LLM-as-a-Judge behavior.
- domain assumption Cosine similarity of sentence embeddings captures question-text relevance.
Cite this review
Pith. "Pith review of Overview of the Sensemaking Task at the ELOQUENT 2025 Lab: LLMs as Teachers, Students and Evaluators." pith.science (2026). https://pith.science/paper/K3DYRUTU
@misc{pith2026250712143,
author = {Pith},
title = {Pith review of: Overview of the Sensemaking Task at the ELOQUENT 2025 Lab: LLMs as Teachers, Students and Evaluators},
year = {2026},
howpublished = {\url{https://pith.science/paper/K3DYRUTU}},
note = {Machine review of arXiv:2507.12143}
}
read the original abstract
ELOQUENT is a set of shared tasks that aims to create easily testable high-level criteria for evaluating generative language models. Sensemaking is one such shared task. In Sensemaking, we try to assess how well generative models ``make sense out of a given text'' in three steps inspired by exams in a classroom setting: (1) Teacher systems should prepare a set of questions, (2) Student systems should answer these questions, and (3) Evaluator systems should score these answers, all adhering rather strictly to a given set of input materials. We report on the 2025 edition of Sensemaking, where we had 7 sources of test materials (fact-checking analyses of statements, textbooks, transcribed recordings of a lecture, and educational videos) spanning English, German, Ukrainian, and Czech languages. This year, 4 teams participated, providing us with 2 Teacher submissions, 2 Student submissions, and 2 Evaluator submissions. We added baselines for Teacher and Student using commercial large language model systems. We devised a fully automatic evaluation procedure, which we compare to a minimalistic manual evaluation. We were able to make some interesting observations. For the first task, the creation of questions, better evaluation strategies will still have to be devised because it is difficult to discern the quality of the various candidate question sets. In the second task, question answering, the LLMs examined overall perform acceptably, but restricting their answers to the given input texts remains problematic. In the third task, evaluation of question answers, our adversarial tests reveal that systems using the LLM-as-a-Judge paradigm erroneously rate both garbled question-answer pairs and answers to mixed-up questions as acceptable.
Figures
Figures from the paper (4 more)
Reference graph
Works this paper leans on
-
[1]
J. Karlgren, K. Artemova, O. Bojar, M. I. Engels, V. Mikhailov, P. Šindelář, E. Velldal, L. Øvrelid, Overview of ELOQUENT 2025: shared tasks for evaluating generative language model quality, in: J. C. de Albornoz, J. Gonzalo, L. Plaza, A. G. S. de Herrera, J. Mothe, F. Piroi, P. Rosso, D. Spina, G. Faggioli, N. Ferro (Eds.), Experimental IR Meets Multilin...
work page 2025
-
[2]
Z. Wang, R. Baraniuk, MultiQG-TI: Towards question generation from multi-modal sources, in: E. Kochmar, J. Burstein, A. Horbach, R. Laarmann-Quante, N. Madnani, A. Tack, V. Yaneva, Z. Yuan, T. Zesch (Eds.), Proceedings of the 18th Workshop on Innovative Use of NLP for Building Educational Applications (BEA 2023), Association for Computational Linguistics,...
-
[3]
Evaluation of Question Answering Systems: Complexity of judging a natural language
A. Farea, Z. Yang, K. Duong, N. Perera, F. Emmert-Streib, Evaluation of question answering systems: complexity of judging a natural language, arXiv preprint arXiv:2209.12617 (2022)
work page Pith review arXiv 2022
-
[4]
E. Kamalloo, N. Dziri, C. L. A. Clarke, D. Rafiei, Evaluating open-domain question answering in the era of large language models, 2023. URL: https://arxiv.org/abs/2305.06984.arXiv:2305.06984
arXiv 2023
-
[5]
P. Rajpurkar, J. Zhang, K. Lopyrev, P. Liang, SQuAD: 100,000+ questions for machine comprehen- sion of text, in: J. Su, K. Duh, X. Carreras (Eds.), Proceedings of the 2016 Conference on Empirical Methods in Natural Language Processing, Association for Computational Linguistics, Austin, Texas, 2016, pp. 2383–2392. URL: https://aclanthology.org/D16-1264/. d...
-
[6]
Koehn, Neural machine translation, Cambridge University Press, 2020
P. Koehn, Neural machine translation, Cambridge University Press, 2020
work page 2020
-
[7]
D. Javorský, D. Macháček, O. Bojar, Continuous rating as reliable human evaluation of simultaneous speech translation, in: P. Koehn, L. Barrault, O. Bojar, F. Bougares, R. Chatterjee, M. R. Costa-jussà, C. Federmann, M. Fishel, A. Fraser, M. Freitag, Y. Graham, R. Grundkiewicz, P. Guzman, B. Haddow, M. Huck, A. Jimeno Yepes, T. Kocmi, A. Martins, M. Moris...
work page 2022
-
[8]
A. Sajdoková, M. Macek, O. Hlava, M. Štefanec, A. Kříž, J. Kučera, O. Bojar, Team LLMinds Submission for ELOQUENT Sensemaking Task, in: G. Faggioli, N. Ferro, P. Rosso, D. Spina (Eds.), Working Notes of CLEF 2025 – Conference and Labs of the Evaluation Forum, CEUR-WS, 2025
work page 2025
Show all 11 references
-
[9]
S. Oh, H. Go, H. Moon, Y. Lee, M. Jeong, H. S. Lee, S. Choi, Evaluation of question generation needs more references, 2023. URL: https://arxiv.org/abs/2305.16626.arXiv:2305.16626
2023 arXiv
-
[10]
Reimers, I
N. Reimers, I. Gurevych, Sentence-BERT: Sentence embeddings using Siamese BERT-networks, in: K. Inui, J. Jiang, V. Ng, X. Wan (Eds.), Proceedings of the 2019 Conference on Empirical Methods in Natural Language Processing and the 9th International Joint Conference on Natural La...
2019 doi
-
[11]
least” and “most
K. Lutsai, M. Thér, J. Venc, O. Bojar, ELOQUENT Sensemaking task - LLMs in the Evaluator role, in: G. Faggioli, N. Ferro, P. Rosso, D. Spina (Eds.), Working Notes of CLEF 2025 – Conference and Labs of the Evaluation Forum, CEUR-WS, 2025. A. Examining the stability of the Teach...
2025
Reviewed August 6, 2026 · model on record in the stance chip above.
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