Technique for searching for keywords determining event occurrence
First Claim
1. A system for searching a plurality of texts of recorded conversations to determine keywords leading to an event occurrence in a plurality of texts wherein the texts each have a progress leading up to the event occurrence recorded therein, comprising:
- a processing device for executing units;
a text input unit for inputting a plurality of subtexts while associating each of the subtexts with an event occurring through the process recorded in each of the texts, the subtexts obtained by selecting parts corresponding to each of a plurality of predetermined sections in each of the plurality of texts;
a plurality of event prediction devices corresponding to the plurality of sections respectively, the prediction devices each outputting a prediction result of an event occurring through the process recorded in the subtexts corresponding to the prediction device, the prediction result based on the appearance frequency of each word in the subtexts;
a prediction device adjuster for adjusting the event prediction device corresponding to each of the plurality of sections, so as to maximize the percentage of agreeing texts to a first text group selected from the plurality of corresponding subtexts, the agreeing texts each indicating the content in which the inputted event agrees with the prediction result;
a prediction processor for generating the prediction result for each of the plurality of sections, by selecting a second text group, which is different from the first text group, from the plurality of subtexts corresponding to the section, and then by inputting each text of the second text group in the adjusted event prediction device corresponding to the section; and
a search unit for calculating the prediction precision for the second text group of the event prediction device of each of the sections, the prediction precision based on a comparison result between the inputted event and the prediction result for each subtext, for searching for keywords in a section which have a higher degree of prediction precision than a predetermined reference value, and for outputting the keywords,wherein the prediction device adjuster randomly selects the first text group from the plurality of subtexts corresponding to each of the plurality of sections, andthe prediction processor selects, as the second text group, some of the plurality of subtexts corresponding to each of the plurality of sections, by excluding the first text group from the subtexts.
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Abstract
A keyword search system including a text input unit for inputting subtexts obtained by dividing each text into parts, while associating the subtexts with an event through a process recorded in the text; a prediction device adjuster for adjusting a corresponding event prediction device to maximize the percentage of text in which the inputted event is identical to a prediction result in a first text group selected from the subtexts; a prediction processor for generating a prediction result for each section, by inputting each text in a second text group selected from the corresponding subtexts in the adjusted event prediction device; and a search unit for calculating the prediction precision for the second text group of the event prediction device using a comparison between the inputted event and the prediction result for each subtext, and searching for keywords in sections with a certain degree of prediction precision.
18 Citations
10 Claims
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1. A system for searching a plurality of texts of recorded conversations to determine keywords leading to an event occurrence in a plurality of texts wherein the texts each have a progress leading up to the event occurrence recorded therein, comprising:
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a processing device for executing units; a text input unit for inputting a plurality of subtexts while associating each of the subtexts with an event occurring through the process recorded in each of the texts, the subtexts obtained by selecting parts corresponding to each of a plurality of predetermined sections in each of the plurality of texts; a plurality of event prediction devices corresponding to the plurality of sections respectively, the prediction devices each outputting a prediction result of an event occurring through the process recorded in the subtexts corresponding to the prediction device, the prediction result based on the appearance frequency of each word in the subtexts; a prediction device adjuster for adjusting the event prediction device corresponding to each of the plurality of sections, so as to maximize the percentage of agreeing texts to a first text group selected from the plurality of corresponding subtexts, the agreeing texts each indicating the content in which the inputted event agrees with the prediction result; a prediction processor for generating the prediction result for each of the plurality of sections, by selecting a second text group, which is different from the first text group, from the plurality of subtexts corresponding to the section, and then by inputting each text of the second text group in the adjusted event prediction device corresponding to the section; and a search unit for calculating the prediction precision for the second text group of the event prediction device of each of the sections, the prediction precision based on a comparison result between the inputted event and the prediction result for each subtext, for searching for keywords in a section which have a higher degree of prediction precision than a predetermined reference value, and for outputting the keywords, wherein the prediction device adjuster randomly selects the first text group from the plurality of subtexts corresponding to each of the plurality of sections, and the prediction processor selects, as the second text group, some of the plurality of subtexts corresponding to each of the plurality of sections, by excluding the first text group from the subtexts. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for causing a computer to search a plurality of texts of recorded conversations to determine keywords leading to an event occurrence, the texts each having a progress leading up to the event occurrence recorded therein, the method comprising the steps of:
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inputting, for each of the plurality of texts, a plurality of subtexts which are obtained by selecting parts corresponding to a plurality of predetermined sections from the texts while associating the subtexts with events which occurred through the process recorded in the texts; and when a plurality of event prediction devices are provided corresponding to the plurality of sections respectively, the prediction devices each outputting a prediction result of an event occurring through the process recorded in a corresponding one of the subtexts, the prediction result based on the appearance frequency of each word in the corresponding subtext, adjusting the corresponding event prediction devices, for each of the plurality of sections, to maximize the percentage of agreeing texts to a first text group selected from the plurality of corresponding subtexts, the agreeing texts each indicating the content in which the inputted event agrees with the prediction result; for each of the plurality of sections, selecting a second text group, which is different from the first text group, from the plurality of subtexts corresponding to the section, and then by inputting each text of the second text group in the adjusted event prediction device corresponding to the section, and generating the prediction result; and calculating the prediction precision for the second text group of the event prediction device of each of the sections, the prediction precision based on a comparison result between the inputted event and the prediction result for each subtext, for searching for keywords in a section which have a higher degree of prediction precision than a predetermined reference value, and for outputting the keywords, and wherein the adjusting comprises randomly selecting the first text group from the plurality of subtexts corresponding to each of the plurality of sections, and wherein the selecting of the second text group comprises selecting the plurality of subtexts corresponding to each of the plurality of sections, by excluding the first text group from the subtexts.
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10. A program storage device storing a program for causing a computer to function as a system for searching a plurality of texts of recorded conversations for determining keywords that lead to an event occurrence, the texts each having a progress leading up to the event occurrence recorded therein, the program causing the computer to function as:
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a text input unit for inputting a plurality of subtexts while associating each of the subtexts with an event occurring through the process recorded in each of the texts, the subtexts obtained by selecting parts corresponding to each of a plurality of predetermined sections in each of the plurality of texts; an event prediction device provided corresponding to the plurality of sections respectively, the prediction devices each outputting a prediction result of an event occurring through the process recorded in the subtexts corresponding to the prediction device, the prediction result based on the appearance frequency of each word in the subtexts; a prediction device adjuster for adjusting the event prediction device corresponding to each of the plurality of sections, so as to maximize the percentage of agreeing texts to a first text group selected from the plurality of corresponding subtexts, the agreeing texts each indicating the content in which the inputted event agrees with the prediction result; a plurality of prediction processors for generating the prediction result for each of the plurality of sections, by selecting a second text group, which is different from the first text group, from the plurality of subtexts corresponding to the section, and then by inputting each text of the second text group in the adjusted event prediction device corresponding to the section; and a search unit for calculating the prediction precision for the second text group of the event prediction device of each of the sections, the prediction precision based on a comparison result between the inputted event and the prediction result for each subtext, for searching for keywords in a section which have a higher degree of prediction precision than a predetermined reference value, and for outputting the keywords wherein the prediction device adjuster randomly selects the first text group from the plurality of subtexts corresponding to each of the plurality of sections, and the prediction processor selects, as the second text group, some of the plurality of subtexts corresponding to each of the plurality of sections, by excluding the first text group from the subtexts.
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Specification