User activity estimation system and a user activity estimating method
First Claim
1. A computer readable medium storing a program for estimating a user activity from an article to which an article identifier for identification of the article is attached, the program executing instructions to perform the steps comprising:
- extracting a noun and a verb in a sentence from document data that have been input;
calculating a conditional probability of the verb to the noun in accordance with P (verb v|noun n)∝
1/(a number of types of verbs)P(noun n|verb v);
storing an article identifier and in association with article information corresponding to the noun;
storing probability information in association with the noun and the verb that have been extracted, the conditional probability that has been calculated, and the number of the types of the verbs;
detecting an article identifier; and
estimating the user activity based on the probability information, in response to detection of the article identifier;
wherein when a plurality of the verbs are associated with the noun, a plurality of the conditional probabilities of the plurality of the verbs are compared with each other, the estimating step estimates that there is a higher possibility that the user will perform the user activity corresponding to the verb having a higher conditional probability.
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Abstract
A noun and a verb is mapped as the information about an article to which an article identifier such as a radio tag, etc. is attached and a user activity, thereby estimating a user activity from the article to which the article identifier is attached and providing a user with appropriate information. An article identifier for identification of an article is associated with article information and stored (step S202), and the relationship between a noun relating to the article information and a verb relating to the article are associated with a conditional probability and held in the probability information holding unit (step S207). Upon detection of the article identifier, the probability of the verb to the noun is calculated based on the contents held in the probability information holding unit, thereby estimating a user activity (step S212). Thus, based on the detection result of the article identifier attached to the article, the activity of the user on the article can be estimated. As a result, an appropriate service can be provided for the activity of the user.
36 Citations
5 Claims
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1. A computer readable medium storing a program for estimating a user activity from an article to which an article identifier for identification of the article is attached, the program executing instructions to perform the steps comprising:
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extracting a noun and a verb in a sentence from document data that have been input; calculating a conditional probability of the verb to the noun in accordance with P (verb v|noun n)∝
1/(a number of types of verbs)P(noun n|verb v);storing an article identifier and in association with article information corresponding to the noun; storing probability information in association with the noun and the verb that have been extracted, the conditional probability that has been calculated, and the number of the types of the verbs; detecting an article identifier; and estimating the user activity based on the probability information, in response to detection of the article identifier; wherein when a plurality of the verbs are associated with the noun, a plurality of the conditional probabilities of the plurality of the verbs are compared with each other, the estimating step estimates that there is a higher possibility that the user will perform the user activity corresponding to the verb having a higher conditional probability. - View Dependent Claims (2, 3, 4)
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5. A user activity estimating method for estimating a user activity from an article to which an article identifier for identification of the article is attached, the method comprising:
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extracting a noun and a verb in a sentence from document data that have been input; calculating a conditional probability of the verb to the noun in accordance with P (verb v|noun n)∝
1/(a number of types of verbs)P(noun n|verb v);storing an article identifier and in association with article information corresponding to the noun; storing probability information in association with the noun and the verb that have been extracted, the conditional probability that has been calculated, and the number of the types of the verbs; detecting an article identifier; and estimating the user activity based on the probability information, in response to detection of the article identifier; wherein when a plurality of the verbs are associated with the noun, a plurality of the conditional probabilities of the plurality of the verbs are compared with each other, the estimating step estimates that there is a higher possibility that the user will perform the user activity corresponding to the verb having a higher conditional probability; wherein the above steps are performed by a computer.
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Specification