notebook.community

Edit and run 





In [1]:



    


import graphlab

导入文本数据 (from WIKI about some people)





In [2]:



    


people = graphlab.SFrame('people_wiki.gl/')



    


















    






[INFO] graphlab.cython.cy_server: GraphLab Create v2.1 started. Logging: /tmp/graphlab_server_1489642669.log










    






This non-commercial license of GraphLab Create for academic use is assigned to y_xwang@163.com and will expire on March 13, 2018.

















In [3]:



    


people.head()



    


















    
Out[3]:








    

        URI
        name
        text
    

    

        <http://dbpedia.org/resou
rce/Digby_Morrell> ...		
        Digby Morrell
        digby morrell born 10
october 1979 is a former ...		
    

    

        <http://dbpedia.org/resou
rce/Alfred_J._Lewy> ...		
        Alfred J. Lewy
        alfred j lewy aka sandy
lewy graduated from ...		
    

    

        <http://dbpedia.org/resou
rce/Harpdog_Brown> ...		
        Harpdog Brown
        harpdog brown is a singer
and harmonica player who ...		
    

    

        <http://dbpedia.org/resou
rce/Franz_Rottensteiner> ...		
        Franz Rottensteiner
        franz rottensteiner born
in waidmannsfeld lower ...		
    

    

        <http://dbpedia.org/resou
rce/G-Enka> ...		
        G-Enka
        henry krvits born 30
december 1974 in tallinn ...		
    

    

        <http://dbpedia.org/resou
rce/Sam_Henderson> ...		
        Sam Henderson
        sam henderson born
october 18 1969 is an ...		
    

    

        <http://dbpedia.org/resou
rce/Aaron_LaCrate> ...		
        Aaron LaCrate
        aaron lacrate is an
american music producer ...		
    

    

        <http://dbpedia.org/resou
rce/Trevor_Ferguson> ...		
        Trevor Ferguson
        trevor ferguson aka john
farrow born 11 november ...		
    

    

        <http://dbpedia.org/resou
rce/Grant_Nelson> ...		
        Grant Nelson
        grant nelson born 27
april 1971 in london  ...		
    

    

        <http://dbpedia.org/resou
rce/Cathy_Caruth> ...		
        Cathy Caruth
        cathy caruth born 1955 is
frank h t rhodes ...		
    



[10 rows x 3 columns]

探索数据和文本

Obama's 文章





In [16]:



    


obama = people[people['name'] == 'Barack Obama']



    











In [17]:



    


obama['text']



    


















    
Out[17]:








dtype: str
Rows: ?
['barack hussein obama ii brk husen bm born august 4 1961 is the 44th and current president of the united states and the first african american to hold the office born in honolulu hawaii obama is a graduate of columbia university and harvard law school where he served as president of the harvard law review he was a community organizer in chicago before earning his law degree he worked as a civil rights attorney and taught constitutional law at the university of chicago law school from 1992 to 2004 he served three terms representing the 13th district in the illinois senate from 1997 to 2004 running unsuccessfully for the united states house of representatives in 2000in 2004 obama received national attention during his campaign to represent illinois in the united states senate with his victory in the march democratic party primary his keynote address at the democratic national convention in july and his election to the senate in november he began his presidential campaign in 2007 and after a close primary campaign against hillary rodham clinton in 2008 he won sufficient delegates in the democratic party primaries to receive the presidential nomination he then defeated republican nominee john mccain in the general election and was inaugurated as president on january 20 2009 nine months after his election obama was named the 2009 nobel peace prize laureateduring his first two years in office obama signed into law economic stimulus legislation in response to the great recession in the form of the american recovery and reinvestment act of 2009 and the tax relief unemployment insurance reauthorization and job creation act of 2010 other major domestic initiatives in his first term included the patient protection and affordable care act often referred to as obamacare the doddfrank wall street reform and consumer protection act and the dont ask dont tell repeal act of 2010 in foreign policy obama ended us military involvement in the iraq war increased us troop levels in afghanistan signed the new start arms control treaty with russia ordered us military involvement in libya and ordered the military operation that resulted in the death of osama bin laden in january 2011 the republicans regained control of the house of representatives as the democratic party lost a total of 63 seats and after a lengthy debate over federal spending and whether or not to raise the nations debt limit obama signed the budget control act of 2011 and the american taxpayer relief act of 2012obama was reelected president in november 2012 defeating republican nominee mitt romney and was sworn in for a second term on january 20 2013 during his second term obama has promoted domestic policies related to gun control in response to the sandy hook elementary school shooting and has called for full equality for lgbt americans while his administration has filed briefs which urged the supreme court to strike down the defense of marriage act of 1996 and californias proposition 8 as unconstitutional in foreign policy obama ordered us military involvement in iraq in response to gains made by the islamic state in iraq after the 2011 withdrawal from iraq continued the process of ending us combat operations in afghanistan and has sought to normalize us relations with cuba', ... ]

















In [18]:



    


obama['word_count'] = graphlab.text_analytics.count_words(obama['text'])

为 obama's 文章 word count 排序





In [20]:



    


obama_word_count_table = obama[['word_count']].stack('word_count', new_column_name=['word', 'count'])



    











In [21]:



    


obama_word_count_table.head()



    


















    
Out[21]:








    

        word
        count
    

    

        cuba
        1
    

    

        relations
        1
    

    

        sought
        1
    

    

        combat
        1
    

    

        ending
        1
    

    

        withdrawal
        1
    

    

        state
        1
    

    

        islamic
        1
    

    

        by
        1
    

    

        gains
        1
    



[10 rows x 2 columns]



















In [22]:



    


obama_word_count_table.sort('count', ascending=False)



    


















    
Out[22]:








    

        word
        count
    

    

        the
        40
    

    

        in
        30
    

    

        and
        21
    

    

        of
        18
    

    

        to
        14
    

    

        his
        11
    

    

        obama
        9
    

    

        act
        8
    

    

        he
        7
    

    

        a
        7
    



[273 rows x 2 columns]
Note: Only the head of the SFrame is printed.
You can use print_rows(num_rows=m, num_columns=n) to print more rows and columns.

计算 TF-IDF 整个文集





In [32]:



    


people['word_count'] = graphlab.text_analytics.count_words(people['text'])
people.head()



    


















    
Out[32]:








    

        URI
        name
        text
        word_count
    

    

        <http://dbpedia.org/resou
rce/Digby_Morrell> ...		
        Digby Morrell
        digby morrell born 10
october 1979 is a former ...		
        {'selection': 1,
'carltons': 1, 'being': ...		
    

    

        <http://dbpedia.org/resou
rce/Alfred_J._Lewy> ...		
        Alfred J. Lewy
        alfred j lewy aka sandy
lewy graduated from ...		
        {'precise': 1, 'thomas':
1, 'closely': 1, ...		
    

    

        <http://dbpedia.org/resou
rce/Harpdog_Brown> ...		
        Harpdog Brown
        harpdog brown is a singer
and harmonica player who ...		
        {'just': 1, 'issued': 1,
'mainly': 1, 'nominat ...		
    

    

        <http://dbpedia.org/resou
rce/Franz_Rottensteiner> ...		
        Franz Rottensteiner
        franz rottensteiner born
in waidmannsfeld lower ...		
        {'all': 1,
'bauforschung': 1, ...		
    

    

        <http://dbpedia.org/resou
rce/G-Enka> ...		
        G-Enka
        henry krvits born 30
december 1974 in tallinn ...		
        {'they': 1,
'gangstergenka': 1, ...		
    

    

        <http://dbpedia.org/resou
rce/Sam_Henderson> ...		
        Sam Henderson
        sam henderson born
october 18 1969 is an ...		
        {'currently': 1, 'less':
1, 'being': 1, ...		
    

    

        <http://dbpedia.org/resou
rce/Aaron_LaCrate> ...		
        Aaron LaCrate
        aaron lacrate is an
american music producer ...		
        {'exclusive': 2,
'producer': 1, 'show' ...		
    

    

        <http://dbpedia.org/resou
rce/Trevor_Ferguson> ...		
        Trevor Ferguson
        trevor ferguson aka john
farrow born 11 november ...		
        {'taxi': 1, 'salon': 1,
'gangs': 1, 'being': 1, ...		
    

    

        <http://dbpedia.org/resou
rce/Grant_Nelson> ...		
        Grant Nelson
        grant nelson born 27
april 1971 in london  ...		
        {'houston': 1, 'frankie':
1, 'labels': 1, ...		
    

    

        <http://dbpedia.org/resou
rce/Cathy_Caruth> ...		
        Cathy Caruth
        cathy caruth born 1955 is
frank h t rhodes ...		
        {'phenomenon': 1,
'deborash': 1, 'both' ...		
    



[10 rows x 4 columns]



















In [33]:



    


tfidf = graphlab.text_analytics.tf_idf(people['word_count'])



    











In [34]:



    


people['tfidf'] = tfidf



    











In [35]:



    


people.head()



    


















    
Out[35]:








    

        URI
        name
        text
        word_count
    

    

        <http://dbpedia.org/resou
rce/Digby_Morrell> ...		
        Digby Morrell
        digby morrell born 10
october 1979 is a former ...		
        {'selection': 1,
'carltons': 1, 'being': ...		
    

    

        <http://dbpedia.org/resou
rce/Alfred_J._Lewy> ...		
        Alfred J. Lewy
        alfred j lewy aka sandy
lewy graduated from ...		
        {'precise': 1, 'thomas':
1, 'closely': 1, ...		
    

    

        <http://dbpedia.org/resou
rce/Harpdog_Brown> ...		
        Harpdog Brown
        harpdog brown is a singer
and harmonica player who ...		
        {'just': 1, 'issued': 1,
'mainly': 1, 'nominat ...		
    

    

        <http://dbpedia.org/resou
rce/Franz_Rottensteiner> ...		
        Franz Rottensteiner
        franz rottensteiner born
in waidmannsfeld lower ...		
        {'all': 1,
'bauforschung': 1, ...		
    

    

        <http://dbpedia.org/resou
rce/G-Enka> ...		
        G-Enka
        henry krvits born 30
december 1974 in tallinn ...		
        {'they': 1,
'gangstergenka': 1, ...		
    

    

        <http://dbpedia.org/resou
rce/Sam_Henderson> ...		
        Sam Henderson
        sam henderson born
october 18 1969 is an ...		
        {'currently': 1, 'less':
1, 'being': 1, ...		
    

    

        <http://dbpedia.org/resou
rce/Aaron_LaCrate> ...		
        Aaron LaCrate
        aaron lacrate is an
american music producer ...		
        {'exclusive': 2,
'producer': 1, 'show' ...		
    

    

        <http://dbpedia.org/resou
rce/Trevor_Ferguson> ...		
        Trevor Ferguson
        trevor ferguson aka john
farrow born 11 november ...		
        {'taxi': 1, 'salon': 1,
'gangs': 1, 'being': 1, ...		
    

    

        <http://dbpedia.org/resou
rce/Grant_Nelson> ...		
        Grant Nelson
        grant nelson born 27
april 1971 in london  ...		
        {'houston': 1, 'frankie':
1, 'labels': 1, ...		
    

    

        <http://dbpedia.org/resou
rce/Cathy_Caruth> ...		
        Cathy Caruth
        cathy caruth born 1955 is
frank h t rhodes ...		
        {'phenomenon': 1,
'deborash': 1, 'both' ...		
    





    

        tfidf
    

    

        {'selection':
3.836578553093086, ...		
    

    

        {'precise':
6.44320060695519, ...		
    

    

        {'just':
2.7007299687108643, ...		
    

    

        {'all':
1.6431112434912472, ...		
    

    

        {'they':
1.8993401178193898, ...		
    

    

        {'currently':
1.637088969126014, ...		
    

    

        {'exclusive':
10.455187230695827, ...		
    

    

        {'taxi':
6.0520214560945025, ...		
    

    

        {'houston':
3.935505942157149, ...		
    

    

        {'phenomenon':
5.750053426395245, ...		
    



[10 rows x 5 columns]

检查结果 (以奥巴马为例)





In [40]:



    


obama = people[people['name'] == 'Barack Obama']



    











In [41]:



    


obama[['tfidf']].stack('tfidf', new_column_name=['word', 'tfidf']).sort('tfidf',  ascending=False)



    


















    
Out[41]:








    

        word
        tfidf
    

    

        obama
        43.2956530721
    

    

        act
        27.678222623
    

    

        iraq
        17.747378588
    

    

        control
        14.8870608452
    

    

        law
        14.7229357618
    

    

        ordered
        14.5333739509
    

    

        military
        13.1159327785
    

    

        involvement
        12.7843852412
    

    

        response
        12.7843852412
    

    

        democratic
        12.4106886973
    



[273 rows x 2 columns]
Note: Only the head of the SFrame is printed.
You can use print_rows(num_rows=m, num_columns=n) to print more rows and columns.

计算 people 之间的距离





In [42]:



    


clinton = people[people['name'] == 'Bill Clinton']



    











In [43]:



    


beckham = people[people['name'] == 'David Beckham']



    











In [44]:



    


graphlab.distances.cosine(obama['tfidf'][0], clinton['tfidf'][0])



    


















    
Out[44]:








0.8339854936884276

















In [46]:



    


graphlab.distances.cosine(obama['tfidf'][0], beckham['tfidf'][0])



    


















    
Out[46]:








0.9791305844747478

构建最邻近模型(Nearest Neighbor Model)





In [47]:



    


nn_model = graphlab.nearest_neighbors.create(people, features=['tfidf'], label='name')



    


















    







Starting brute force nearest neighbors model training.

应用模型





In [48]:



    


nn_model.query(obama)



    


















    







Starting pairwise querying.










    







+--------------+---------+-------------+--------------+










    







| Query points | # Pairs | % Complete. | Elapsed Time |










    







+--------------+---------+-------------+--------------+










    







| 0            | 1       | 0.00169288  | 250.949ms    |










    







| 0            | 49122   | 83.1576     | 1.18s        |










    







| Done         |         | 100         | 1.47s        |










    







+--------------+---------+-------------+--------------+










    
Out[48]:








    

        query_label
        reference_label
        distance
        rank
    

    

        0
        Barack Obama
        0.0
        1
    

    

        0
        Joe Biden
        0.794117647059
        2
    

    

        0
        Joe Lieberman
        0.794685990338
        3
    

    

        0
        Kelly Ayotte
        0.811989100817
        4
    

    

        0
        Bill Clinton
        0.813852813853
        5
    



[5 rows x 4 columns]

Content source: quoniammm/happy-machine-learning

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