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--- |
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inference: |
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parameters: |
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function_to_apply: "none" |
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widget: |
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- text: "I cuddled with my dog today." |
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--- |
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# Conditional Utilitarian Roberta 01 |
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## Model description |
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This is a [Roberta-based](https://huggingface.co/roberta-large) model. It was first fine-tuned on for computing utility estimates of experiences (see [utilitarian-roberta-01](https://huggingface.co/pfr/utilitarian-roberta-01). It was then further fine-tuned on 160 examples of pairwise comparisons of conditional utilities. |
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## Intended use |
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The main use case is the computation of utility estimates of first-person text scenarios, under extra contextual information. |
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## Limitations |
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The model was fine-tuned on only 160 examples, so it should be expected to have limited performance. |
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Further, while the base model was trained on ~10000 examples, they are still restricted, and only on first-person sentences. It does not have the capability of interpreting highly complex or unusual scenarios, and it does not have hard guarantees on its domain of accuracy. |
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## How to use |
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Given a scenario S under a context C, and the model U, one computes the estimated conditional utility with `U(f'{C} {S}') - U(C)`. |
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## Training data |
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The first training data is the train split from the Utilitarianism part of the [ETHICS dataset](https://arxiv.org/abs/2008.02275). |
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The second training data consists of 160 crowdsourced examples of triples (S, C0, C1) consisting of one scenario and two possible contexts, where `U(S | C0) > U(S | C1)`. |
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## Training procedure |
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Starting from [utilitarian-roberta-01](https://huggingface.co/pfr/utilitarian-roberta-01), we fine-tune the model over the training data of 160 examples, with a learning rate of `1e-5`, a batch size of `8`, and for 2 epochs. |
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## Evaluation results |
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The model achieves ~70% accuracy over 40 crowdsourced examples, from the same distribution as the training data. |
