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Task Priors: Enhancing Model Evaluation by Considering the Entire Space of Downstream Tasks

Created by
  • Haebom

Author

Niket Patel, Randall Balestriero

Outline

This paper points out the Limitations of the evaluation method in self-supervised learning (SSL) and proposes a new evaluation framework to improve it. The existing fixed benchmark-based evaluation deviates from the ultimate goal of AI research, "solving all possible tasks", and makes researchers spend a lot of effort to find various evaluation tasks. In this paper, we define the probabilistic space of all possible subtasks by introducing task distribution and task priors. This allows us to evaluate the average performance and variance of the model for all possible subtasks. This is expected to evaluate the model performance in all possible subtasks and especially contribute to the advancement of self-supervised learning research.

Takeaways, Limitations

Takeaways:
We present a new framework that overcomes the limitations of existing fixed benchmark-based evaluations and evaluates model performance for all possible tasks.
Introducing Task Priors to enable measuring the average performance and performance variance of a model.
Improving evaluation methods and accelerating the pace of self-directed learning research.
Provides a more comprehensive understanding of the model's generalization performance.
Limitations:
The definition and setting of Task Priors can have a significant impact on the results of a study. There is no clear guideline for setting appropriate Task Priors.
It is realistically difficult to perfectly define all possible workspaces. Approximation errors that may occur in practical applications must be taken into account.
The proposed framework may have high computational complexity. Further research is needed on efficient computational methods.
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