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improve some details from other commiters' adivces

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zhangcheng 2015-02-16 20:35:45 +08:00
parent 8b8c6c85d0
commit 01b7f6efcf
1 changed files with 4 additions and 5 deletions
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9
jieba/analyse/textrank.py
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@ -23,17 +23,16 @@ class UndirectWeightedGraph:
ws = collections.defaultdict(float)
outSum = collections.defaultdict(float)
giter = list(self.graph.items()) # these two lines for build stable iteration
giter.sort()
wsdef = 1.0 / (len(self.graph) or 1.0)
for n, out in giter:
for n, out in self.graph.items():
ws[n] = wsdef
outSum[n] = sum((e[2] for e in out), 0.0)
sorted_keys = sorted(self.graph.keys()) # this line for build stable iteration
for x in range(10): # 10 iters
for n, inedges in giter:
for n in sorted_keys:
s = 0
for e in inedges:
for e in self.graph[n]:
s += e[2] / outSum[e[1]] * ws[e[1]]
ws[n] = (1 - self.d) + self.d * s