What is a Literary Fingerprint?
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http://www.physorg.com/news179651371.html
http://iopscience.iop.org/1367-2630/11/12/123015
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What are some of the issues in creating 'fingerprint'
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Where else do fingerprints occur?
What is www.shazam.com
What is www.tineye.com
How do we go from sets to frequency analysis?
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Toward understanding Python dictionary data type
Compsci 06/101, Fall 2010
9.1
How do you read words from file?
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I exist solely as the
Canis Familiaris
'Bassett'
Compsci 06/101, Fall 2010

I ain't nothin' but a
hound-dog
9.2
Six of one and half-a-dozen …
def wordsFromFile3(filename):
file = open(filename)
words = []
for line in file:
for w in line.split():
words.append(w)
file.close()
return words
Change one line to get all
words in lowercase equivalent
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See CommonWords.py
Compsci 06/101, Fall 2010
9.3
Six of one and half-a-dozen …
def wordsFromFile2(filename):
file = open(filename)
words = []
for line in file:
words.extend(line.split())
file.close()
return words
Change one line to get all
words in lowercase equivalent


See CommonWords.py
Compsci 06/101, Fall 2010
9.4
Six of one and half-a-dozen …
def wordsFromFile(filename):
file = open(filename)
words = file.read().split()
file.close()
return words
Change one line to get all words in
lowercase equivalent

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
See CommonWords.py
Reasoning about common words
Compsci 06/101, Fall 2010
9.5
How do we find 'common words'

Should common words be included in our literary
fingerprint?
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Where do authoritative sources originate? Determinable?
How can we experiment and compare common files?
Using Python sets!
Words in one set that aren't in another?
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How do we do this in Python?
How do we find words in all sets?
Is intersection an associative operation? Do we care?
Compsci 06/101, Fall 2010
9.6
Set Operations from pictures
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http://en.wikipedia.org/wiki/File:Venn0111.svg
Compsci 06/101, Fall 2010
9.7
APTs for practice: great minds …
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Membercheck and SimpleWordGame
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Set idioms
List comprehensions
Understandable code
Why do we study more than one way to …?
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Expressive power
Neuronal excitement
Creating connections
We don't have to
Compsci 06/101, Fall 2010
9.8