update docstring

PanopticQuality.py

@@ -53,8 +53,8 @@ Args:
         The last dimension should hold the category index at position 0, and
         the instance ID at position 1.
 Returns:
-    A single float number in range [0, 1] that represents the PQ score.
-    1 is perfect panoptic segmentation, 0 is worst possible panoptic segmentation.
+    A dictionary containing PQ, RQ, SQ scores for key "scores" and 
+    FP, TP, FN, IOU sum numbers for key "numbers".
 Examples:
     >>> import evaluate
     >>> from seametrics.payload.processor import PayloadProcessor
@@ -170,7 +170,7 @@ class PQMetric(evaluate.Metric):
 
     def _compute(self, *, predictions, references, **kwargs):
         """Called within the evaluate.Metric.compute() method"""
-        tp = self.pq_metric.metric.true_positives.clone().cpu()
+        tp = self.pq_metric.metric.true_positives.clone().cpu() # shape : (area_rngs, n_classes (sorted things + sorted stuffs))
         fp = self.pq_metric.metric.false_positives.clone().cpu()
         fn = self.pq_metric.metric.false_negatives.clone().cpu()
         iou = self.pq_metric.metric.iou_sum.clone().cpu()