Back to Square One: Bias Detection, Training and Commonsense Disentanglement in the Winograd Schema

• URL: http://arxiv.org/abs/2104.08161v1
• Date: Fri, 16 Apr 2021 15:17:23 GMT
• Title: Back to Square One: Bias Detection, Training and Commonsense Disentanglement in the Winograd Schema
• Authors: Yanai Elazar, Hongming Zhang, Yoav Goldberg, Dan Roth
• Abstract summary: The Winograd (WS) has been proposed as a test for measuring commonsense capabilities of models. We show that the current evaluation method of WS is sub-optimal and propose a modification that makes use of twin sentences for evaluation. We conclude that much of the apparent progress on WS may not necessarily reflect progress in commonsense reasoning.
• Score: 106.79804048131253
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The Winograd Schema (WS) has been proposed as a test for measuring commonsense capabilities of models. Recently, pre-trained language model-based approaches have boosted performance on some WS benchmarks but the source of improvement is still not clear. We begin by showing that the current evaluation method of WS is sub-optimal and propose a modification that makes use of twin sentences for evaluation. We also propose two new baselines that indicate the existence of biases in WS benchmarks. Finally, we propose a method for evaluating WS-like sentences in a zero-shot setting and observe that popular language models perform randomly in this setting. We conclude that much of the apparent progress on WS may not necessarily reflect progress in commonsense reasoning, but much of it comes from supervised data, which is not likely to account for all the required commonsense reasoning skills and knowledge.

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