Returns true if values are approximately equal.

Loads CSV from the filename using given column names. Adds uid column. Args: filename: Path to the CSV file to load. column_names: A l

Calculates precision and recall arrays going through df_merged row-wise.

Compute Average Precision according to the definition in VOCdevkit. Precision is modified to ensure that it does not decrease as recall decrease

Decode locations from predictions using priors to undo the encoding we did for offset regression at train time. Args: loc (tensor): lo

Counts all positive examples in the groundtruth dataset.

Merges groundtruth and prediction DataFrames. The returned DataFrame is merged on uid field and sorted in descending order by score field. Bound

Apply non-maximum suppression at test time to avoid detecting too many overlapping bounding boxes for a given object. Args: boxes: (te

Courtesy of Ross Girshick [https://github.com/rbgirshick/py-faster-rcnn/blob/master/lib/nms/py_cpu_nms.py]

Parses command-line flags. Returns: args: a named tuple containing three file objects args.labelmap, args.groundtruth, and args.detection

Runs AVA Active Speaker evaluation, printing average precision result.