Fuji Xerox Co., Ltd.

Fujifilm Business Innovation Corp.

Tomoko Ohkuma

Hiroshi Masuichi

Hiroki Yoshimura

Daigo Sugihara

Tomoki Taniguchi

Motoki Taniguchi

Takumi Takahashi

Shotaro Misawa

An information processing apparatus includes a processor configured to input an arbitrary text and plural answer candidates extracted from the text to a question generator that generates a question sentence associated with an answer, cause the question generator to generate a question sentence associated with the text and the plural answer candidates, and cause the question generator to output generated data including a set of the plural answer candidates and the question sentence.

Information processing apparatus

An answer generating device includes: an input that receives an input of analysis target data which is data to be questioned and analyzed; a processor; and an output. The processor being configured to, upon input of the question and the analysis target data and by execution of a program, extract answers to the question from the analysis target data using plural single answer models prepared in advance, the answers each being extracted independently for each of the plural single answer models, calculate a frequency of appearance of each of tokens in the extracted answers, and extract a single answer or multiple answers based on the frequency of appearance, and output the single answer or multiple answers to the output.

Answer generating device and non-transitory computer readable medium storing program

An output apparatus includes a processor configured to receive an input word expressing a feature of a matter; and, by inputting the input word to a generation model trained on relation between a feature term extracted based on a descriptive text describing the matter and an associative text associated with the matter, the associative text being generated from the descriptive text describing the matter, output an associative text corresponding to the input word.

Output apparatus and non-transitory computer readable medium

A question answering system includes a question dividing unit, a question answering unit, and an answer determination unit. The question dividing unit applies a predetermined question dividing rule to an input question, to divide the input question into sub-questions. The question answering unit acquires answer candidates corresponding to the sub-questions generated by the question dividing unit, together with certainty values serving as reliability indexes. The answer determination unit selects an answer to the input question from among the answer candidates acquired by the question answering unit.

Question answering system, data search method, and computer program

A question answering system includes a question input unit, a search unit, an answer candidate extraction unit, an answer candidate inspection unit and an answer output unit. The search unit executes search processing based on an input question. The answer candidate extraction unit extracts an initial answer candidate based on a result of the search processing. The answer candidate inspection unit inspects the initial answer candidate. The answer candidate inspection unit executes search processing with using a query including the initial answer candidate. The answer candidate inspection unit determines whether each word of a sentence obtained as a result of the search processing has a similar lexical meaning to that of each word of the input question. The answer candidate inspection unit selects an initial answer candidate contained in a query determined to have the similar lexical meaning, as a secondary answer candidate.

A question answering system includes a question input unit input to a question, a search unit, an anaphoric analysis unit, an information extraction unit and an answer candidate extraction unit. The search unit executes search processing based on the input question. The anaphoric analysis unit executes anaphoric analysis processing on a search result. The information extraction unit extracts sentences, which include expressions having a reference relation therebetween, as reference relation sentences, the reference relation determined by finding relation in an expressions of at least one of a noun phrase, a pronoun, and a zero pronoun between sentences in the search result on a basis of a result of the anaphoric analysis; selects a first candidate sentence from a passage obtained as the search result; and selects a second candidate sentence, which is the reference relation sentence of the first candidate sentence. The answer candidate extraction unit extracts an answer candidate.

A question answering system includes a question-sentence analysis unit, a search unit, an answer-candidate extraction unit, a check-expression generation unit, a check-expression search unit and an answer-candidate correction unit. The question-sentence analysis unit extracts a keyword applied to a search process from an input question sentence. The search unit executes the search process with using the extracted keyword. The answer-candidate extraction unit extracts answer candidates for the input question sentence based on a search result. The check-expression generation unit analyzes the input question sentence to generate a check expression concatenating an analysis result and the extracted answer candidates. The check-expression search unit executes a search process based on the generated check expression. The answer-candidate correction unit selects an output answer to the input question from among answer the candidates based on a search result.

A question answering system includes a similar-question generation unit, a first search unit, a second search unit, and an answer selection unit. The similar-question generation unit selects a feature word from an input question to generate a transformational question in which the feature word is replaced with another word. The first search unit executes a first search process based on the transformational question. The second search unit selects a word included in a first search result acquired as an extension word and executes a second search process with using the selected extension word. The answer selection unit analyzes a correspondence relation among extension words included in a second search result, determines the feature word and a constructive part of an answer equivalent word in the second search result based on an analysis result, and selects a word determined to be an answer.

A question answering system includes a question answering unit, an analysis unit, a tree structure generation unit, a feature extraction unit, an evaluation unit and a re-ranking unit. The question answering unit executes search processing based on an input question and acquires answer candidates to the question. The analysis unit executes syntactic analysis processing or syntactic and semantic analysis processing on a passage obtained as a result of the search processing. The tree structure generation unit generates a tree structure based on an analysis result. The feature extraction unit extracts a relation between a search word applied in the search processing and each acquired answer candidate as a feature corresponding to each answer candidate from the tree structure. The evaluation unit determines an evaluation value of each answer candidate based on the feature extracted. The re-ranking unit re-ranks the answer candidates based on the evaluation values.

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Kanagawa, Japan

Tomoko Ohkuma