class_docstr: Mean Reciprocal Rank.
  
  References
  ----------
  https://en.wikipedia.org/wiki/Mean_reciprocal_rank
class_docstr_tok: ["Mean","Reciprocal","Rank",".","References","--","--","--","--","--","https",":","\/\/en.wikipedia.org\/wiki\/Mean_reciprocal_rank"]
code: def __init__(self):
      RankingMetric.__init__(self, name="MRR")
  
imports: import numpy
  from scipy.stats import rankdata
label_desc: Use image node_id 1 to create a new MRR object from inherited base classes: RankingMetric with example: obj = MRR()