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Search results with tag "Pre cision"
BLEU: a Method for Automatic Evaluation of Machine …
aclanthology.orgtor and a standard (poor) machine translation system using 4 reference translations for each of 127 source sentences. The average precision results are shown in Figure 1. Figure 1: Distinguishing Human from Machine ˘ ˇ ˆ The strong signal differentiating human (high pre-cision) from machine (low precision) is striking.
The Relationship Between Precision-Recall and ROC Curves
www.biostat.wisc.eduthe y-axis. Recall is the same as TPR, whereas Pre-cision measures that fraction of examples classi ed as positive that are truly positive. Figure 2(b) gives the de nitions for each metric. We will treat the metrics as functions that act on the underlying confusion ma-trix which de nes a point in either ROC space or PR space.