CN109446306A - A kind of intelligent answer method of more wheels dialogue of task based access control driving - Google Patents

A kind of intelligent answer method of more wheels dialogue of task based access control driving Download PDF

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CN109446306A
CN109446306A CN201811202665.5A CN201811202665A CN109446306A CN 109446306 A CN109446306 A CN 109446306A CN 201811202665 A CN201811202665 A CN 201811202665A CN 109446306 A CN109446306 A CN 109446306A
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dialogue
user
wheels
task
access control
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郭运艳
李明明
曾光
潘心冰
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Inspur Software Co Ltd
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Inspur Software Co Ltd
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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F40/00Handling natural language data
    • G06F40/30Semantic analysis

Abstract

The invention discloses a kind of intelligent answer methods of more wheels dialogue of task based access control driving, specific method includes carrying out data preparation for different tasks, intent classifier model and element extraction model are obtained by training, pushes method of the progress of every wheel dialogue to complete intelligent answer by taking turns dialogue management mechanism and decision-making mechanism more;Wherein intent classifier model and element extraction model, for analyzing the question sentence of user or the intention and key element of answer content;More wheel dialogue management mechanism and decision-making mechanism effectively assist user to complete to talk with around more wheels of task for the optimal movement by should constantly be taken in next step according to current state decision.A kind of intelligent answer method of more wheels dialogue of task based access control driving of the invention is compared to the prior art, realize that the more wheels for automatically initiating guidance and limiting in range are talked with, the probability of success for improving human-computer interaction can satisfy people for quickly and accurately obtaining the demand of information.

Description

A kind of intelligent answer method of more wheels dialogue of task based access control driving
Technical field
The invention belongs to field of human-computer interaction, are related to natural language processing, information management, question answering system etc., especially relate to And a kind of more wheel dialogue methods and system of task based access control driving.
Background technique
Intelligent Answer System is the automatic machine that can answer any natural language form problem, for specified enquirement, is led to Analysis semantic information is crossed, so that correct answer is found out in extensive true online text, rather than keyword search engine The list that several webpages are constituted is returned like that.An important function is more wheels based on context session operational scenarios in intelligent answer One of interactive and its difficult point.
In practical applications, intelligent Answer System is not simple question-response, and may be complicated Diversification Type knowledge. Wherein, dialogue management (Dialog Management, DM) controls interactive process, DM according to conversation history information, It determines currently to the reaction of user.
Existing most more wheel session interaction systems are mostly to pre-define system mode and system acting set;It is being When system operation, according to the state of current system, selected most from system acting set by a series of strategies or statistical model One optimal system acting is exported.But there is the Task session of tree hierarchy dependence for each system acting System, the solution that existing major part takes turns session interaction system more are unsatisfactory.For example, in telecommunications industry, for problem " broadband troubleshooting ", standard response is that whether guidance inquiry or inquiry user shut down arrearage first, after user response, then According to the different situation of user, further multiple conditions such as error code, equipment state of guidance inquiry user, could finally be determined Handle scheme.
And by more wheel session interaction systems of Manual definition's rule, it is complex in task customization, and be easy to appear The conflict of a plurality of rule;Statistics conversational system based on enhancing study can be learned automatically under the premise of having sufficient training corpus This tree-like dependence is practised, but corpus obtains hardly possible, and the content comprehensibility learnt is poor, it is difficult to control.
Summary of the invention
The present invention provides a kind of intelligent answer methods of more wheels dialogue of task based access control driving in view of the above problems, mainly pair Different types of task carries out data preparation, training obtains intent classifier model and element extraction model, provides more wheel dialogue pipes Reason mechanism and decision-making mechanism complete the intelligent answer of single task or multitask.
The technical solution adopted by the present invention to solve the technical problems is: what a kind of more wheels of task based access control driving were talked with Intelligent answer method carries out data preparation for different tasks, obtains intent classifier model by training and element extracts mould Type pushes method of the progress of every wheel dialogue to complete intelligent answer by taking turns dialogue management mechanism and decision-making mechanism more;
Wherein intent classifier model and element extraction model, for analyze user question sentence or answer content intention and be critical to Element;
More wheel dialogue management mechanism and decision-making mechanism, for by should constantly be taken in next step according to current state decision Optimal movement effectively assists user to complete to talk with around more wheels of task.
Further, preferred method is,
Intent classifier model and element extraction model are obtained by training, the training includes judging user by logistic regression Intention whether shift;Specific method is the degree of correlation for comprehensively considering the same task context, by related single feature Whether the distributed similar feature vector as logistic regression classification of cosine phase Sihe, be intended to shift for judging.
Further, preferred method is that single feature includes TF-IDF, card side, comentropy;Single feature Basis using Bi-LSTM method training carry out Entity recognition.
Further, preferred method is that more wheel dialogue management mechanism and decision-making mechanism are with user spoken utterances Element is that conversation mechanism is established in driving;Conversation mechanism includes two kinds:
Single task takes turns dialogue more, and when the element user of the task is not known or provides, data are not full-time, and machine guides user complete It is provided at element;
Multiple tasks mixing carries out more wheel dialogues, when there is task nest phenomenon, when the rhetorical question number of same problem is more than to use When the setting value of family, a upper unclosed task is returned to.
Further, preferred method is that key element is classified as to the word slot of entity type first, is identified by word slot With multiple inquiry, clarification, the accurate concern key point for obtaining user of confirmation movement;
Different tasks is attributed to different classes of intention, passes through intention assessment and the dialogue purpose of determining user.
A kind of intelligent Answer System of more wheels dialogue of task based access control driving, the intelligent Answer System to know accordingly Know database based on, including natural language processing module, dialogue management module, problem semantic understanding module, answer retrieval obtain Modulus block and knowledge base component update module;
Natural language processing module, for being pre-processed to user's input problem and knowledge base;
Dialogue management module, the challenge for context question sentence are handled;
Problem semantic understanding module, for carrying out semantic understanding to single problem;
Answer retrieval obtains module, for obtaining problem answers;
Knowledge base component update module is used for more new knowledge base, so that the better organization knowledge of knowledge base, more rapidly prepares retrieval Answer.
Further, preferred structure is that natural language processing module includes keyword extracting unit, domain lexicon acquisition Unit, customer problem element extraction unit;
Keyword extracting unit is marked for inputting problem and knowledge base progress Chinese word segmentation to user with female, so as to key The extraction of word;
Domain lexicon acquiring unit, for extracting the entity and new word discovery of knowledge base, to obtain domain lexicon;
Customer problem element extraction unit carries out syntactic analysis and semantic character labeling for inputting problem to user, to obtain Take the Subject, Predicate and Object and agent word denoting the receiver of an action of customer problem.
Further, preferred structure is that dialogue management module includes clause's split cells, problem clarification unit, problem Question closely unit and context recognition unit;
Clause's split cells, for being split to problem when once inputting multiple problems;
Problem clarifies unit, for when the question sentence of problem is fuzzy to be understood, to problem secondary clearing again;
Problem questions closely unit, for questioning closely to problem and achieving the purpose that answer when problem lacks essential elements;
Context recognition unit, for being identified to context when problem is related to context of co-text;
Problem semantic understanding module, the problem of for by determining user, identification user puts question to and is intended to and the problem of to lacking Based on context ingredient reverts to semantic complete problem.
Further, preferred structure is knowledge base component update module, for increasing ontology extraction, neck for knowledge base Domain word extracts, relationship is extracted and the function of inference rule component.
Further, preferred structure is that intelligent Answer System further includes expansion connection module.
A kind of intelligent answer method of more wheels dialogue of task based access control driving of the invention is compared to the prior art, beneficial to imitate Fruit is as follows:
1, more wheel conversational systems of task-driven type need every wheel to talk with the intention and key message of clear user, pass through system master It is dynamic to propose inquiry to guide user to select;When user responds, intelligent Answer System increasing in semantic understanding is needed Addition of constraints condition enables intelligent Answer System to be understood in the node that process is likely to be breached automatically, to guarantee understanding Correctness.
2, the dialogue purpose that user is determined by intention assessment, it is quasi- by Entity recognition and repeatedly inquiry, clarification, confirmation etc. The key point for really obtaining user's concern completes the decision and propulsion of every wheel dialogue by exclusive dialogue management mechanism, thus real It now automatically initiates guidance and limits more wheels dialogue in range, ensure that the progress of man-machine talk effectively, friendly.
3, the probability of success for improving human-computer interaction can satisfy people for quickly and accurately obtaining the demand of information.
Detailed description of the invention
The following further describes the present invention with reference to the drawings.
Attached drawing 1 is a kind of functional block diagram of the intelligent answer method of more wheels dialogue of task based access control driving.
Specific embodiment
Natural language processing (NLP) is a subdomains of artificial intelligence, is dedicated to enabling a computer to understand and locating Human language is managed, makes understanding of the computer closer to the mankind to language, it is intended to extract information in text data, transport on text Row model extracts entity.Deep learning enables us to write program to execute such as language translation, semantic understanding and text The work such as abstract.Natural language understanding NLU: it completes to parse the semanteme of text, extracts key message, such as entity, intention etc.. Spatial term NLG: the natural language text of response is generated for the input of user.Dialogue management: dialog procedure is completed State controls (tracking), data management, context management (dialog strategy).
More wheels dialogue for task-driven realizes dialogue state tracking, key in complicated guidance and interaction flow Information extraction, dialog strategy guide and are applied to intelligent Answer System, have important value.When user is with specific purpose It such as makes a reservation, book tickets, user demand is more complicated, there is many restrictive conditions, it may be necessary to which a point more wheels are stated.On the one hand, User constantly can modify or improve the demand of oneself in dialog procedure, on the other hand, when the demand of the statement of user is inadequate When specific or clear, machine can also help user to find satisfied result by inquiry, clarification or confirmation.Work as user When the demand of statement is not clear enough, machine can side by the more wheel dialogue management mechanism of itself to inquire, clarify or confirm Formula helps user to find satisfied as a result, can be answered with accurate, succinct natural language or user is guided to complete demand.Task Driving more wheel conversational systems need every wheel to talk with the intention and key message of clear user, actively propose to inquire by system To guide user to select;When user responds, intelligent Answer System is needed to increase constraint condition in semantic understanding, Intelligent Answer System is set to be understood in the node that process is likely to be breached automatically, to guarantee the correctness understood.
The present invention is a kind of intelligent answer method of more wheels dialogue of task based access control driving, and this method includes ownership goal shape State maintenance, decision and language understanding, wherein further relating to the key technologies such as natural language processing, Knowledge Extraction, machine learning;This hair The bright dialogue purpose that user is determined by intention assessment is used by the accurate acquisition such as Entity recognition and multiple inquiry, clarification, confirmation The key point of family concern, the decision and propulsion of every wheel dialogue are completed by exclusive dialogue management mechanism, to realize automatic hair It plays guidance and limits more wheels dialogue in range, ensure that the progress of man-machine talk effectively, friendly.
The present invention will be further explained below with reference to the attached drawings and specific examples.
Embodiment 1:
A kind of intelligent answer method of more wheels dialogue of task based access control driving of the invention is branch with existing artificial intelligence technology Support, the comprehensive question answering system based on structural data, the question answering system based on free text and is asked based on " problem answers to " The core technology in system and other implementations is answered, can support the upper layer applications such as chat, personal assistant, network customer service;By melting Magnanimity isomery hypermedia data is closed, the data warehouse of intelligent Answer System is pooled;With cores such as entity, event, document, relationships Based on element, knowledge mapping is constructed.Intelligent response system has first had to data, and data may come from internet and crawl, It can be existing knowledge base (FAQ) or specific corpus, this relates to the source of data, acquisition, excavation, storage Deng design.
A kind of core of the intelligent Answer System of more wheels dialogue of task based access control driving is analysis layer, is divided at natural language Manage (pretreatment) module, dialogue management module, problem semantic understanding module, answer retrieval acquisition module and construction of knowledge base Update module 5 is most of, in the case where knowledge data has had, can form an intelligent answer system by this 5 modules System.
Natural language processing NLP module: the module belongs to preprocessing module, mainly to user input problem and knowledge base into Row pretreatment, such as Chinese word segmentation, part-of-speech tagging, use for subsequent keyword extraction;Extract the entity and neologisms of corpus It was found that obtaining domain lexicon;By syntactic analysis and semantic character labeling, the Subject, Predicate and Object of customer problem is obtained, agent word denoting the receiver of an action (is applied Thing: grammatically refer to the main body of movement, that is, sending movement or changed persons or things.Word denoting the receiver of an action: grammatically refer to movement Object, that is, the persons or things dominated by movement) etc..
Dialogue management module: the module belongs to the challenge processing of context: if problem once inputs multiple problems, needing Carry out clause's fractionation;Question sentence is fuzzy to be understood, problem secondary clearing again is needed;Problem lack must element, need to question closely and reach To answer purpose;Problem is related to context of co-text, needs context identification etc..
Problem semantic understanding module: first to single problem carry out semantic understanding: as determine user be problem or chat It;What is asked is which class business or classification problem, convenient for quickly positioning;The intention that identification user asks, actually or consulting purchase Deng;To ingredient the problem of lacking, semantic complete problem is based on context reverted to, convenient for retrieval answer.Deep Semantics analysis Mainly understand the real semantic of problem and handle challenge, multiple problems are split, it is extensive based on context to carry out default sentence Multiple and intention understands, can extract semantic rules for a variety of ways to put questions, carry out rule match, carries out similarity to the result of retrieval It calculates, finds out optimum answer.
Answer retrieval obtains module: the module is mainly that answer obtains module, if knowledge base is FAQ, is then needed to problem Repeated, or problem normalized into FAQ library standard problem, in the case where, can directly according to keyword retrieval, The result of return carries out similarity calculation, and answer sequence finally returns that answer;For example knowledge base then needs to carry out semantic retrieval, And carry out certain reasoning;For example document then needs to carry out automatic abstract, finds answer.
Construction of knowledge base update module: building knowledge base can better organization knowledge, more rapidly prepare retrieval answer, and FAQ is combined, and question answering system is made to be applicable in various corpus, and is not limited solely to FAQ, needs to include that ontology extracts, domain term mentions Take, relationship extract, inference rule building etc. functions.
The present invention also provides the expansion interface module for receiving new technology in bottom, can support richer upper layer application.
In addition, the present invention also protects a kind of intelligent answer method of more wheels dialogue of task based access control driving, certainly with user Task names, the element of upload of definition mark corpus and the text feature of dialogue corpus is trained, and form intention assessment mould Type and element extraction model, for analyzing the intention and key element of user's question sentence or answer content.The wherein text that training uses Eigen not only used the features such as TF-IDF, card side, comentropy, also comprehensively consider the correlation of the same task context Degree uses the distributed similar feature vector classified as logistic regression of cosine phase Sihe of above several single features, to sentence Whether disconnected intention shifts.Entity recognition is separately carried out using the training of Bi-LSTM method on the basis of these features.
The cosine similarity calculated between vector is the traditional method of Similarity measures for vector space model.It is remaining Details are not described herein for string similarity algorithm, and (personalized search of Journal of Software, 2003, Vol.14, NO.5 Cempetency-based education is calculated It is described in method).
More wheel dialogue management mechanism and decision-making mechanism, for by should constantly be adopted in next step according to current state decision The optimal movement taken effectively assists user to complete to talk with around more wheels of task.
More wheel dialogue management mechanism and decision-making mechanism are to establish conversation mechanism with the element of user spoken utterances for driving; Conversation mechanism includes two kinds:
Single task takes turns dialogue more, and when the element user of the task is not known or provides, data are not full-time, and machine guides user complete It is provided at element;
Multiple tasks mixing carries out more wheel dialogues, when there is task nest phenomenon, when the rhetorical question number of same problem is more than to use When the setting value of family, a upper unclosed task is returned to.
Key element is classified as to the word slot of entity type first, it is dynamic by the identification of word slot and repeatedly inquiry, clarification, confirmation Make the accurate concern key point for obtaining user;
Different tasks is attributed to different classes of intention, passes through intention assessment and the dialogue purpose of determining user.
Dialog management system through the invention improves the probability of success of human-computer interaction, it is ensured that man-machine talk has Effect, friendly progress.People be can satisfy for quickly and accurately obtaining the demand of information.It can solve and customized in business The Intelligent dialogue of scene.
The technical personnel in the technical field can readily realize the present invention with the above specific embodiments,.But it should manage Solution, the present invention is not limited to above-mentioned several specific embodiments.On the basis of the disclosed embodiments, the technical field Technical staff can arbitrarily combine different technical features, to realize different technical solutions.

Claims (10)

1. a kind of intelligent answer method of more wheels dialogue of task based access control driving, which is characterized in that carried out for different tasks Data preparation obtains intent classifier model and element extraction model by training, by taking turns dialogue management mechanism and decision machine more System pushes method of the progress of every wheel dialogue to complete intelligent answer;
Wherein intent classifier model and element extraction model, for analyze user question sentence or answer content intention and be critical to Element;
More wheel dialogue management mechanism and decision-making mechanism, for by should constantly be taken in next step according to current state decision Optimal movement effectively assists user to complete to talk with around more wheels of task.
2. a kind of intelligent answer method of more wheels dialogue of task based access control driving according to claim 1, which is characterized in that
Intent classifier model and element extraction model are obtained by training, the training includes judging user by logistic regression Intention whether shift;Specific method is the degree of correlation for comprehensively considering the same task context, by related single feature Whether the distributed similar feature vector as logistic regression classification of cosine phase Sihe, be intended to shift for judging.
3. a kind of intelligent answer method of more wheels dialogue of task based access control driving according to claim 2, which is characterized in that Single feature includes TF-IDF, card side, comentropy;The basis of single feature is carried out using the training of Bi-LSTM method Entity recognition.
4. a kind of intelligent answer method of more wheels dialogue of task based access control driving according to claim 1, which is characterized in that More wheel dialogue management mechanism and decision-making mechanism are to establish conversation mechanism with the element of user spoken utterances for driving;Conversation mechanism Including two kinds:
Single task takes turns dialogue more, and when the element user of the task is not known or provides, data are not full-time, and machine guides user complete It is provided at element;
Multiple tasks mixing carries out more wheel dialogues, when there is task nest phenomenon, when the rhetorical question number of same problem is more than to use When the setting value of family, a upper unclosed task is returned to.
5. a kind of intelligent answer method of more wheels dialogue of task based access control driving according to claim 4, which is characterized in that
Key element is classified as to the word slot of entity type first, is acted by the identification of word slot and multiple inquiry, clarification, confirmation quasi- Really obtain the concern key point of user;
Different tasks is attributed to different classes of intention, passes through intention assessment and the dialogue purpose of determining user.
6. a kind of intelligent Answer System of more wheels dialogue of task based access control driving, which is characterized in that the intelligent Answer System Based on corresponding knowledge data base, including natural language processing module, dialogue management module, problem semantic understanding module, Answer retrieval obtains module and knowledge base component update module;
Natural language processing module, for being pre-processed to user's input problem and knowledge base;
Dialogue management module, the challenge for context question sentence are handled;
Problem semantic understanding module, for carrying out semantic understanding to single problem;
Answer retrieval obtains module, for obtaining problem answers;
Knowledge base component update module is used for more new knowledge base, so that the better organization knowledge of knowledge base, more rapidly prepares retrieval Answer.
7. a kind of intelligent Answer System of more wheels dialogue of task based access control driving according to claim 6, which is characterized in that Natural language processing module includes keyword extracting unit, domain lexicon acquiring unit, customer problem element extraction unit;
Keyword extracting unit is marked for inputting problem and knowledge base progress Chinese word segmentation to user with female, so as to key The extraction of word;
Domain lexicon acquiring unit, for extracting the entity and new word discovery of knowledge base, to obtain domain lexicon;
Customer problem element extraction unit carries out syntactic analysis and semantic character labeling for inputting problem to user, to obtain Take the Subject, Predicate and Object and agent word denoting the receiver of an action of customer problem.
8. a kind of intelligent Answer System of more wheels dialogue of task based access control driving according to claim 6, which is characterized in that Dialogue management module includes clause's split cells, problem clarifies unit, problem questions closely unit and context recognition unit;
Clause's split cells, for being split to problem when once inputting multiple problems;
Problem clarifies unit, for when the question sentence of problem is fuzzy to be understood, to problem secondary clearing again;
Problem questions closely unit, for questioning closely to problem and achieving the purpose that answer when problem lacks essential elements;
Context recognition unit, for being identified to context when problem is related to context of co-text;
Problem semantic understanding module, the problem of for by determining user, identification user puts question to and is intended to and the problem of to lacking Based on context ingredient reverts to semantic complete problem.
9. a kind of intelligent Answer System of more wheels dialogue of task based access control driving according to claim 6, which is characterized in that Knowledge base component update module, for increasing for knowledge base, ontology is extracted, domain term is extracted, relationship is extracted and inference rule component Function.
10. a kind of intelligent Answer System of more wheels dialogue of task based access control driving according to claim 6, feature exist In intelligent Answer System further includes expansion connection module.
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