IDENTIFYING CULTURAL BACKGROUND FROM TEXT

• US 20130282362A1
• Filed: 03/28/2013
• Published: 10/24/2013
• Est. Priority Date: 03/28/2012
• Status: Active Grant

• Current Assignee: Leidos Innovations Technology, Inc.
• Original Assignee: Lockheed Martin Corporation (Martin Marietta Corporation)
• Inventors: TAYLOR, Sarah M., Davenport, Daniel M., Menaker, David, Paradis, Rosemary D.
• Granted Patent: US 9,158,761 B2
• Time in Patent Office: Days
• US Class Current: 704/9
• CPC Class Codes: G06F 40/253 Grammatical analysis; Style critique
• CPC Class Codes: G06F 40/284 Lexical analysis, e.g. tokenisation or collocates
• CPC Class Codes: G06F 40/40 Processing or translation of natural language natural language analysis G06F40/20; semantic analysis G06F40/30

Abstract

Diaculture of text can be determined or analyzed by tokenizing words of the text according to a rule set to generate tokenized text, the rule set defining: a first set of grammatical types of words, which are words that are replaced with tokens that respectively indicate a grammatical type of a respective word, and a second set of grammatical types of words, which are words that are passed as tokens without changing. Grams can be constructed from the tokenized text, each gram including one or more of consecutive tokens from the tokenized text. The grams can be compared to a training data set that corresponds to a known diaculture to obtain a comparison result that indicates how well the text matches the training data set for the known diaculture.

Claims

1. A method for determining a diaculture of text, comprising:

tokenizing words of the text with one or more processors according to a rule set to generate tokenized text, the rule set defining;

a first set of grammatical types of words, which are words that are replaced, in the tokenizing, with tokens that respectively indicate a grammatical type of a respective word, and

a second set of grammatical types of words, which are words that are passed, in the tokenizing, as tokens without changing;

constructing grams from the tokenized text, each gram including one or more of consecutive tokens from the tokenized text; and

comparing the grams to a training data set that corresponds to a known diaculture to obtain a comparison result that indicates how well the text matches the training data set for the known diaculture.

2. The method according to claim 1, wherein the comparing includes:

assigning scores to the grams based on a comparison between the training data set and a baseline data set;

windowing a fixed number of the consecutive tokens in the tokenized text to form a first window, and repeatedly advancing the first window by one token to form a plurality of windows of tokens from the tokenized text;

assigning a score to each of the windows based on the scores assigned to the grams; and

obtaining the comparison result based on the scores assigned to the windows.

3. The method according to claim 2, wherein the constructing grams includes constructing a plurality of 1, 2, and 3-grams from the tokenized text, the 1, 2, and 3 grams respectively including 1, 2, and 3 consecutive tokens from the tokenized text, such that a 1-gram includes a first token, a 2-gram includes the first token and a second token that consecutively follows the first token, and a 3-gram includes the first and second tokens and a third token that consecutively follows the first token.

4. The method according to claim 3, wherein the comparing includes:

assigning scores to the grams based on the training data set, including assigning a composite score for one gram that is calculated based on neighboring grams, such that the composite score for the 1-gram is calculated based on scores assigned to the first, second and third tokens.

5. The method according to claim 4, wherein the composite score for the 1-gram is an average of the scores assigned to the first, second and third tokens.

6. The method according to claim 1, wherein the first set of grammatical types of words includes words indicative of a topic of the text.

7. The method according to claim 6, wherein the second set of grammatical types of words does not include words that are indicative of the topic of the text.

8. The method according to claim 1, wherein the first set of grammatical types of words includes verbs, nouns, adverbs, and adjectives.

9. The method according to claim 8, wherein each tense of each grammatical type in the first set is tokenized with a different token.

10. The method according to claim 9, wherein the second set of grammatical types of words includes possessive pronouns, pronouns, articles, and prepositions.

11. The method according to claim 1, wherein the training data set includes a plurality of data sets that respectively correspond to a plurality of different diacultures, and the comparing includes comparing the grams to the data sets to obtain comparison results that indicate how well the text matches the data sets.

12. The method according to claim 11, further comprising displaying a result of the comparing on a display.

13. The method according to claim 1, wherein the training data set includes a plurality of comments written by authors of the known diaculture.

14. The method according to claim 13, wherein the comments include comments of a posting, and the training data set does not include the posting.

15. The method according to claim 13, further comprising assigning training scores to the training data set by:

tokenizing words of the comments with one or more processors according to the rule set to generate tokenized comments;

constructing grams from the tokenized comments, each gram including one or more of consecutive tokens from the tokenized comments; and

assigning scores to each of the grams of the tokenizing comments according to one or more scoring methods that each define a relationship between a score of a gram, and a number of times the gram appears in the training data set and a baseline data set.

16. The method according to claim 15, wherein the comparing includes:

assigning scores to the grams of the tokenized text based on the scores assigned to the grams of the tokenized comments;

windowing a fixed number of the consecutive tokens in the tokenized text to form a first window, and repeatedly advancing the first window by one token to form a plurality of windows of tokens from the tokenized text;

assigning scores to the windows based on the scores assigned to the grams; and

obtaining the comparison result based on the scores assigned to the windows.

17. The method according to claim 16, wherein:

the training data set includes a plurality of data sets that respectively correspond to a plurality of different diacultures;

the comparing includes comparing the grams to the data sets to obtain comparison results that indicate how well the text matches the data sets; and

the method further comprises;

displaying results of the comparing for each combination of the one or more scoring methods and the different diacultures.

18. A non-transitory computer readable medium including computer-executable instructions that, when executed by a computer processor, cause the computer processor to execute the method according to claim 1.

19. A system for determining a diaculture of text, comprising computer hardware, including a central processor and memory, which is configured to:

tokenize words of the text with one or more processors according to a rule set to generate tokenized text, the rule set defining;

a first set of grammatical types of words, which are words that are replaced with tokens that respectively indicate a grammatical type of a respective word, and

a second set of grammatical types of words, which are words that are passed as tokens without changing;

construct grams from the tokenized text, each gram including one or more of consecutive tokens from the tokenized text; and

compare the grams to a training data set that corresponds to a known diaculture to obtain a comparison result that indicates how well the text matches the training data set for the known diaculture.

20. A processing machine for determining a diaculture of text, comprising:

tokenizing circuitry to tokenize words of the text with one or more processors according to a rule set to generate tokenized text, the rule set defining;

a first set of grammatical types of words, which are words that are replaced, by the tokenizing circuitry, with tokens that respectively indicate a grammatical type of a respective word, and

a second set of grammatical types of words, which are words that are passed, by the tokenizing circuitry, as tokens without changing;

constructing circuitry to construct grams from the tokenized text, each gram including one or more of consecutive tokens from the tokenized text; and

comparing circuitry to compare the grams to a training data set that corresponds to a known diaculture to obtain a comparison result that indicates how well the text matches the training data set for the known diaculture.