Emergent World Representations: Exploring a Sequence Model Trained on a Synthetic Task
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| Main Authors: | , , , , , |
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| Format: | Preprint |
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2022
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| _version_ | 1866913405023027200 |
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| author | Li, Kenneth Hopkins, Aspen K. Bau, David Viégas, Fernanda Pfister, Hanspeter Wattenberg, Martin |
| author_facet | Li, Kenneth Hopkins, Aspen K. Bau, David Viégas, Fernanda Pfister, Hanspeter Wattenberg, Martin |
| contents | Language models show a surprising range of capabilities, but the source of their apparent competence is unclear. Do these networks just memorize a collection of surface statistics, or do they rely on internal representations of the process that generates the sequences they see? We investigate this question by applying a variant of the GPT model to the task of predicting legal moves in a simple board game, Othello. Although the network has no a priori knowledge of the game or its rules, we uncover evidence of an emergent nonlinear internal representation of the board state. Interventional experiments indicate this representation can be used to control the output of the network and create "latent saliency maps" that can help explain predictions in human terms. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2210_13382 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Emergent World Representations: Exploring a Sequence Model Trained on a Synthetic Task Li, Kenneth Hopkins, Aspen K. Bau, David Viégas, Fernanda Pfister, Hanspeter Wattenberg, Martin Machine Learning Artificial Intelligence Computation and Language Language models show a surprising range of capabilities, but the source of their apparent competence is unclear. Do these networks just memorize a collection of surface statistics, or do they rely on internal representations of the process that generates the sequences they see? We investigate this question by applying a variant of the GPT model to the task of predicting legal moves in a simple board game, Othello. Although the network has no a priori knowledge of the game or its rules, we uncover evidence of an emergent nonlinear internal representation of the board state. Interventional experiments indicate this representation can be used to control the output of the network and create "latent saliency maps" that can help explain predictions in human terms. |
| title | Emergent World Representations: Exploring a Sequence Model Trained on a Synthetic Task |
| topic | Machine Learning Artificial Intelligence Computation and Language |
| url | https://arxiv.org/abs/2210.13382 |