Utterance analysis device, utterance analysis method, and computer program

1. An utterance analysis device, comprising;

a storage that stores a plurality of pieces of related information each relating to one of a plurality of categories;

a control circuit that receives utterance data of an utterer in order of time series and analyzes content of the utterance data by using a plurality of first likelihoods, which are each values for identifying a possibility that the utterance data corresponds to each category; and

a display processor that displays, under control of the control circuit, display data including link information indicating an association for displaying related information relating to the category of the utterance data from the storage,

wherein the control circuit selects sequentially, from a plurality of pieces of link information corresponding to a plurality of pieces of related information relating to each category for each first likelihood, a piece of link information to be preferentially displayed by the display processor by using the plurality of first likelihoods each time the utterance data is acquired in the time series.

2. The utterance analysis device according to claim 1 , wherein the control circuit:

calculates a second likelihood for each category by integrating the first likelihoods of a plurality of pieces of utterance data in an analysis target period in the time series; and

causes the display processor to display link information for displaying corresponding related information by giving priority to the category having a higher second likelihood.

3. The utterance analysis device according to claim 2 , wherein the control circuit determines the second likelihood by using a first weighting value which is set to a larger value as a frequency of appearance of a category having a highest first likelihood in the analysis target period becomes higher.

4. The utterance analysis device according to claim 2 , wherein the control circuit determines the second likelihood by using a second weighting value which is set to a larger value as the utterance data becomes closer to an end of the analysis target period than a start of the analysis target period.

5. The utterance analysis device according to claim 2 , further comprising a receiver that receives input of a period specified by a user,

wherein the control circuit determines the second likelihood by using the period received by the receiver as the analysis target period.

6. The utterance analysis device according to claim 2 ,

wherein the control circuit selects a predetermined number of pieces of information associated with categories having a high second likelihood, and

wherein the display data displayed by the display processor includes the predetermined number of pieces of information in descending order of the second likelihood.

7. The utterance analysis device according to claim 1 , wherein the display data displayed by the display processor includes, in time series of utterances, text data obtained by converting the utterance data into text by voice recognition processing.

8. The utterance analysis device according to claim 7 , wherein the display data displayed by the display processor is data in which a predetermined term in the text data is emphasized.

9. The utterance analysis device according to claim 1 , wherein the control circuit calculates the first likelihood relating to each category for each piece of utterance data.

10. The utterance analysis device according to claim 1 , wherein the utterance data is data of conversation among a plurality of utterers.

11. The utterance analysis device according to claim 1 ,

wherein the utterer is an inquirer and an operator, and

wherein the related information is a manual relating to content of an inquiry.

12. The utterance analysis device according to claim 11 , wherein the control circuit analyzes only content of utterance data of the operator.

13. The utterance analysis device according to 1 , wherein the control circuit:

causes the display processor to display a plurality of pieces of link information in descending order of a priority order which is based on the plurality of first likelihoods; and

receives input of a user operation for selecting one piece of link information from the plurality of pieces of displayed link information, and to control the display processor so that the related information corresponding to the one piece of link information selected by the user operation is displayed.

14. The utterance analysis device according to claim 1 ,

wherein the plurality of pieces of related information indicate a plurality of materials each associated with one of the plurality of categories, and

wherein the control circuit receives input of a user operation for selecting link information displayed by the display processor, and controls the display processor so that a corresponding material among the plurality of materials is displayed in accordance with the link information selected by the user operation.

15. An utterance analysis method for analyzing content of an utterance of an utterer and displaying information on the utterance,

a plurality of pieces of related information each relating to one of a plurality of categories being stored in a storage;

the utterance analysis method comprising;

receiving, from an input device, utterance data of an utterer in order of time series;

analyzing, by a control circuit, content of the utterance data by using a plurality of first likelihoods, which are each values for identifying a possibility that the utterance data corresponds to each category; and

displaying, by a display processor, under control of the control circuit, display data including link information indicating an association for displaying related information relating to the category of the utterance data from the storage,

wherein the control circuit selects sequentially, from a plurality of pieces of link information corresponding to a plurality of pieces of related information relating to each category for each first likelihood, a piece of link information to be preferentially displayed by the display processor by using the plurality of first likelihoods each time the utterance data is acquired in the time series.

16. A non-transitory computer-readable recording medium storing a computer program causing a control circuit included in a computer to implement the utterance analysis method of claim 15 .