Venue: ICLR 2023 TinyPapers

Reviews:

final_score: rating: Great Start (GS): a submission which meets some of the reviewing criteria but has room for improvement
review_content: summary_of_contributions: The authors have proposed a fast adversarial perturbation attack (termed FACPA) on no-reference quality metrics, which may allow the quality metric to increase the quality scores without improving visual quality. Compared to previous methods, the proposed method is much faster, allowing better injection into real-time algorithms. 
strengths_and_weaknesses: Strength:
1. Paper is clearly written. Motivation is also quite clear.
2. Comparison to other related methods seems adequate. 


Weakness:
1. In the proposed attach equation, it is unclear to me what M (the target metric being attacked) actually is. The discussion seems missing. 

suggested_changes: More discussion is needed on the target metric that is being attacked (M) in the proposed algorithm, with details.
review_title: null

final_score: rating: Clear, Correct, and Reproducible (CCR): a submission which meets the reviewing criteria
review_content: summary_of_contributions:  This paper studies fast adversarial attacks to NN-based quality metrics. The proposed attack is intended to be faster than iterative attacks and more effective than universal attacks. 
strengths_and_weaknesses: Strengths:
- The paper presents an attack that is fast while achieving satisfactory effectiveness, for attacking quality metrics.

Weaknesses:
- The description of the proposed attack is not quite clear and detailed (how function f is obtained).

suggested_changes: Citation formats:
- "Adam optimizer Kingma & Ba (2014)." -> "Adam optimizer (Kingma & Ba, 2014)" (add parentheses, perhaps use \citep; many similar changes needed)

Description of the algorithm can be made more clear.
review_title: null

Meta-review: metareview: The motivation is clear and the proposed method seems to be effective. But some essential details in the method are not quite clear and detailed. 

confidence: 4: The area chair is confident but not absolutely certain
Decision: Invite to archive