Fix issue where OV sentence similarity report NaN metric#310
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DingmaomaoBJTU
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Apr 10, 2026
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We use spearman correlation to measure the sentence similar models. The metric calculation library returns a NaN value when the prediction array contains constant values, meaning no sentence similarity rank order.
When the predictions output constant value, this means severe regression as the model completely lose the capability to detect sentence similarity.
Therefore, we treat the metric as zero when the lib returns NaN. 0 means the model has no ranking capability.