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fulmicoton / Kaggle Yandex parse code
Created December 11, 2013 12:29
Parse function returns a generator of session object. It takes a generator of tuples as an input.
import itertools
from collections import defaultdict, OrderedDict
from math import log
def dcg(scores):
return sum( (2**score - 1) / log(i+2) for (i, score) in enumerate(scores) )
class Session(object):