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Fix errors in HITS() #440

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Merged
norvig merged 1 commit into from
Apr 12, 2017
Merged

Fix errors in HITS() #440

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4 changes: 2 additions & 2 deletions nlp.py
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Original file line number Diff line number Diff line change
Expand Up @@ -385,11 +385,11 @@ def __init__(self, address, hub=0, authority=0, inlinks=None, outlinks=None):
def HITS(query):
"""The HITS algorithm for computing hubs and authorities with respect to a query."""
pages = expand_pages(relevant_pages(query)) # in order to 'map' faithfully to pseudocode we
for p in pages: # won't pass the list of pages as an argument
for p in pages.values(): # won't pass the list of pages as an argument
p.authority = 1
p.hub = 1
while True: # repeat until... convergence
for p in pages:
for p in pages.values():
p.authority = sum(x.hub for x in getInlinks(p)) # p.authority ← ∑i Inlinki(p).Hub
p.hub = sum(x.authority for x in getOutlinks(p)) # p.hub ← ∑i Outlinki(p).Authority
normalize(pages)
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