# US 2017/0286408 A1 · Sentence creation system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0286408 A1 - Document ID: US20170286408A1 - Status: Published application - Kind: A1 - Application number: 15/507,390 - Filed: 2014-10-01 - Published: 2017-10-05 - Earliest claimed: 2014-10-01 - Assignees: Hitachi, Ltd. - Applicants: Hitachi, Ltd. - Inventors: Kohsuke YANAI; Toshinori MIYOSHI; Toshihiko YANASE; Misa SATO - Web page: https://patentgrep.com/patent/US20170286408A1 ## CPC - G06F 40/56: Natural language generation - G06F 16/332: Query formulation - G06F 40/10: Text processing (natural language analysis G06F40/20; semantic analysis G06F40/30; processing or translation of natural language G06F40/40) - G06F 40/289: Phrasal analysis, e.g. finite state techniques or chunking - G06F 40/30: Semantic analysis - G06F 16/313: {Selection or weighting of terms for indexing} - G06F 40/44: Statistical methods, e.g. probability models - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract A sentence creation system, which outputs an opinion sentence on an agenda, includes: an input unit into which the agenda is input; an agenda analyzing unit analyzing the agenda and judging the polarity of the agenda and a keyword used for searching; a searching unit searching for articles using the keyword and a disputed point word showing a disputed point in the discussion; a disputed point determining unit for determining the disputed point used for creating the opinion sentence; a sentence extracting unit for extracting sentences in which the disputed point is described among the articles output by the searching unit; a sentence sorting unit for creating sentences by sorting the extracted sentences; an evaluating unit for evaluating the sentences; a paraphrasing unit for inserting appropriate conjunctions into the sentences; and an output unit for outputting the most highly evaluated sentence among the plural sentences as the opinion sentence. ## Claims ### Claim 1 A sentence creation system for outputting an opinion sentence on an agenda, comprising: an input unit into which the agenda is input; an agenda analyzing unit for analyzing the agenda and judging the polarity of the agenda and a keyword used for searching; a searching unit for searching for articles using the keyword and a disputed point word showing a disputed point in the discussion; a disputed point determining unit for determining the disputed point used for creating the opinion sentence; a sentence extracting unit for extracting sentences in which the disputed point is described among the articles output by the searching unit; a sentence sorting unit for creating sentences by sorting the extracted sentences; an evaluating unit for evaluating the sentences; a paraphrasing unit for inserting appropriate conjunctions into the sentences; and an output unit for outputting the most highly evaluated sentence among the plurality of sentences as the opinion sentence. ### Claim 2 (depends on 1) The sentence creation system according to claim 1, wherein the disputed point determining unit determines a disputed point for each article by classifying the articles output by the searching unit. ### Claim 3 The sentence creation system according to claim further comprising: a storage unit in which stored are the text data of the articles searched for by the searching unit, annotation data attached to the text data, searching indexes created from the text data and the annotation data, and a disputed point ontology that associates the disputed point, suppression words having meanings for suppressing the disputed point, and promotion words having meanings for promoting the disputed point; and an interface unit used for communicating data to and from the searching unit, the disputed point determining unit, the sentence extracting unit, the sentence sorting unit, the evaluating unit, the paraphrasing unit. ### Claim 4 (depends on 3) The sentence creation system according to claim 3, wherein the agenda analyzing unit determines which word should be used as the key word, the suppression word or the promotion word, by judging the polarity of the agenda. ### Claim 5 (depends on 3) The sentence creation system according to claim 3, wherein an evaluation model is further stored in the storage unit, and the evaluating unit calculates the likelihoods of the plurality of sentences in comparison with the evaluation model respectively, and outputs a sentence having the highest likelihood as the opinion sentence. ### Claim 6 A sentence creation method for outputting an opinion sentence on an agenda, comprising: a first step for inputting the agenda; a second step for analyzing the agenda and judging the polarity of the agenda and a keyword used for searching; a third step for searching for articles using the keyword and a disputed point word showing a disputed point in the discussion; a fourth step for determining the disputed point used for creating the opinion sentence; a fifth step for extracting sentences in which the disputed point is described among the articles output at the third step; a sixth step for creating sentences by sorting the extracted sentences; a seventh step for evaluating the sentences; an eighth step for inserting appropriate conjunctions into the sentences; and a ninth step for outputting the most highly evaluated sentence among the plurality of sentences as the opinion sentence. ### Claim 7 (depends on 6) The sentence creation method according to claim 6, wherein a disputed point for each article is determined at the fourth step by classifying the articles output at the third step. ### Claim 8 (depends on 6) The sentence creation method according to claim 6, wherein, at the third step, searched is a storage unit in which stored are: the text data of articles searched for; annotation data attached to the text data; searching indexes created from the text data and the annotation data; and a disputed point ontology that associates the disputed point, suppression words having meanings for suppressing the disputed point, and promotion words having meanings for promoting the disputed point. ### Claim 9 (depends on 8) The sentence creation method according to claim 8, wherein at the second step, determines which word should be used as the key word, the suppression word or the promotion word by judging the polarity of the agenda. ### Claim 10 (depends on 8) The sentence creation method according to claim 8, wherein an evaluation model is further stored in the storage unit, and the likelihoods of the plurality of sentences in comparison with the evaluation model are respectively calculated, and a sentence having the highest likelihood is output as the opinion sentence at the seventh step.