WO2019205705A1 - Semantic-framework-based human-machine conversation method and system - Google Patents
Semantic-framework-based human-machine conversation method and system Download PDFInfo
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- WO2019205705A1 WO2019205705A1 PCT/CN2018/124937 CN2018124937W WO2019205705A1 WO 2019205705 A1 WO2019205705 A1 WO 2019205705A1 CN 2018124937 W CN2018124937 W CN 2018124937W WO 2019205705 A1 WO2019205705 A1 WO 2019205705A1
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F40/00—Handling natural language data
- G06F40/30—Semantic analysis
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F40/00—Handling natural language data
- G06F40/20—Natural language analysis
- G06F40/279—Recognition of textual entities
- G06F40/289—Phrasal analysis, e.g. finite state techniques or chunking
- G06F40/295—Named entity recognition
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- the invention relates to the field of artificial intelligence technology, in particular to a human-machine dialogue method based on a semantic framework and a system using the same.
- Intelligent customer service is an industry-oriented application developed on the basis of large-scale knowledge processing. It involves large-scale knowledge processing technology, natural language understanding technology, knowledge management technology, automatic question answering system, reasoning technology, etc., and has industry versatility. It not only provides enterprises with fine-grained knowledge management technology, but also establishes a fast and effective technical means based on natural language for communication between enterprises and mass users. At the same time, it can also provide statistical analysis information required for refined management. Can greatly reduce the labor costs of the company in customer service.
- the working principle of intelligent customer service is mainly based on the application of big data knowledge processing technology, that is, by extracting the keyword of the visitor to judge the problem of the visitor, and then matching the corresponding answer to the visitor from the knowledge base.
- the premise of getting an accurate answer is to be able to extract accurate and complete questions.
- due to Chinese language problems there are often multiple expressions and multiple use habits in the same problem, resulting in unsatisfactory answers and problem words, or the inability to identify users, resulting in a decline in user experience.
- the present invention provides a human-machine dialogue method and system based on a semantic framework, which analyzes the human-machine dialogue content through the mapping relationship between the theme forest structure tree and the semantic framework model, thereby ensuring accurate acquisition. Complete visitor questions to ensure the accuracy of the answers and improve communication efficiency.
- a man-machine dialogue method based on a semantic framework which comprises the following steps:
- the topic type is matched to the visitor question, and the visitor question is filled into the semantic slot in the semantic framework model corresponding to the topic type;
- the theme forest tree performs question matching from the knowledge base according to the visitor question, and feeds the answer corresponding to the matched question to the visitor.
- step d it is further determined, according to the mapped topic forest tree, whether the visitor problem satisfies a preset condition; when the visitor problem satisfies a preset condition, the theme forest tree according to the The guest problem is matched from the knowledge base; when the visitor problem does not satisfy the preset condition, the theme forest tree feeds the judgment result to the dialogue robot at the front end.
- the entity attribute includes a necessary attribute and an optional attribute
- the semantic slot includes a necessary semantic slot and an optional semantic slot
- the preset condition is whether the necessary attribute is complete
- the subject of the visitor question is Matching of types and populating guest questions into the necessary semantic slots and/or optional semantic slots in the semantic framework model corresponding to the topic type
- the necessary semantic slots and optional semantic slots of the populated semantic framework model The visitor problem is mapped to the necessary attributes and optional attributes of the topic forest tree; and further determining whether the necessary attribute is complete according to the mapped topic forest tree; when the necessary attribute of the visitor problem is complete,
- the theme forest tree performs problem matching from the knowledge base according to the visitor problem; when the necessary attribute of the visitor problem is incomplete, the theme forest tree feeds back the necessary attributes missing to the front-end dialogue robot, The dialogue robot asks the visitor according to the missing necessary attributes to obtain all necessary genus of the subject type .
- the step a further includes:
- A1. Collect the original corpus and perform subject clustering on the original corpus to obtain different types of topics
- the subject clustering is performed on the original corpus, and the theme extraction and topic classification are performed by using the LDA topic model tool.
- the identification and extraction of the entity relationship for each topic type is performed by parsing and semantically parsing the original corpus, and extracting the relationship between the entity information and the tagged entity information according to the parsing result.
- the topic structure tree includes current topic information and inter-topic association information, and all types of topics are indexed according to the inter-topic association information to obtain a topic forest knowledge base.
- the word segmentation processing and keyword extraction are performed on the visitor problem, and the type of the topic to which the keyword belongs is matched according to the extracted keyword, and the guest question is filled into the semantic corresponding to the topic type.
- the necessary semantic slots and/or optional semantic slots in the framework model are provided.
- the necessary semantic slots of the filled semantic framework model and the guest problem of the optional semantic slot are mapped to the necessary attributes and optional attributes of the theme forest structure tree, and the extraction and extraction are performed.
- the keyword matches the necessary attribute and the optional attribute, and judges whether the necessary attribute is missing according to the matching result.
- the present invention also provides a human-machine dialogue system based on a semantic framework, which includes:
- a topic tree creation module which creates a topic forest tree according to the original corpus, and extracts an entity attribute corresponding to each topic type in the topic forest tree;
- a semantic framework model generating module which generates a semantic framework model by using the theme forest structure tree, and maps an entity attribute of the theme forest structure tree to a corresponding semantic slot in the semantic framework model;
- a human-machine dialog module for matching a topic type to a guest question, and populating a guest question into a semantic slot in a semantic framework model corresponding to the topic type;
- a problem matching module configured to map a guest problem of a semantic slot of the filled semantic framework model to an entity attribute of the topic forest structure tree, where the topic forest tree performs problem matching from the knowledge base according to the guest problem ;
- An answer feedback module for feeding back the answer corresponding to the matched question to the visitor.
- the present invention analyzes the content of human-machine dialogue through the mapping relationship between the theme forest tree and the semantic framework model, and can ensure accurate and complete visitor problems, so as to ensure the accuracy of the answer and improve communication on the basis of this. effectiveness.
- the present invention maps the necessary and optional attributes of the theme when creating the topic forest-based knowledge base, and maps with the necessary semantic slots and optional semantic slots in the semantic framework model to thereby invite visitors during human-machine dialogue
- the problem is to match the topic matching and necessary attributes and the questioning of the necessary attributes, so as to actively interact with the visitor and increase the user experience.
- FIG. 1 is a schematic flow chart of a human-machine dialogue method based on a semantic framework according to the present invention
- FIG. 2 is a schematic structural diagram of a human-machine dialogue system based on a semantic framework according to the present invention.
- a semantic framework-based human-machine dialogue method of the present invention includes the following steps:
- the topic type is matched to the visitor question, and the visitor question is filled into the semantic slot in the semantic framework model corresponding to the topic type;
- the theme forest tree performs question matching from the knowledge base according to the visitor question, and feeds the answer corresponding to the matched question to the visitor.
- the semantic framework is a kind of knowledge representation.
- Frame Semantics is a cognitive linguistic theory proposed by American linguist Fillmore.
- the slot is the "slot" in the framework.
- Framework semantics is first and foremost a way to understand and describe the meaning of words and grammatical structures. It starts with the assumption that in order to understand the meaning of words in the language, we must first have the conceptual structure, that is, the knowledge of the semantic framework.
- the semantic framework provides the context and motivation for the meaning of words in the language and in the words. Framework semantics assumes that words can select and highlight certain aspects or instances of the basic semantic framework through its linguistic structure, which is done in a certain way (according to certain principles). Therefore, the interpretation of the meaning and function of words can be carried out in the light of the description of the basic semantic framework until the characteristics of these methods are detailed.
- V To 1V, V will be V, V will be V V, V is going, V is V, V is going down, V is down, V is up 2
- the brackets represent the semantic slot, and the content after the colon represents the content filled by the semantic slot.
- the semantic slot can be divided into the necessary semantic slot and the optional semantic slot as needed.
- the entity attribute includes a required attribute and an optional attribute.
- the semantic slot includes a necessary semantic slot and an optional semantic slot.
- the topic type is matched to the guest question, and the guest question is filled into the necessary semantic slot and/or the optional semantic slot in the semantic framework model corresponding to the topic type;
- the necessary semantic slots of the populated semantic framework model and the guest questions of the optional semantic slot are mapped to the necessary and optional attributes of the topic forest tree.
- step d it is further determined, according to the mapped topic forest tree, whether the visitor problem satisfies a preset condition; when the visitor question satisfies a preset condition, the topic forest tree is based on the visitor problem The problem matching is performed from the knowledge base; when the guest question does not satisfy the preset condition, the theme forest tree feeds the judgment result to the dialogue robot at the front end.
- the preset condition is whether the necessary attribute is complete; that is, determining whether the required attribute is complete according to the mapped topic forest tree; and when the necessary attribute of the visitor problem is complete, the theme forest
- the tree performs question matching from the knowledge base according to the visitor question; when the necessary attribute of the visitor question is incomplete, the theme forest tree feeds back the necessary attributes that are missing to the front-end dialog robot, and the dialog robot The visitor is questioned based on the missing necessary attributes to get all the necessary attributes of the subject type.
- step c the process returns to step c to perform the extraction of the guest question, the filling of the semantic slot, the mapping of the attribute of the entity, the determination of the missing attribute, and the like, and repeats the above process until all the required trees of the theme forest tree are satisfied.
- step a further includes:
- A1. Collect the original corpus and perform subject clustering on the original corpus to obtain different types of topics
- subject clustering of the original corpus is to use the LDA topic model tool for topic extraction and topic classification.
- the original corpus refers to a historical conversation record between the visitor and the customer service, and the original corpus is periodically updated or updated in real time according to the new conversation record.
- the LDA (Latent Dirichlet Allocation) topic model is a document topic generation model, also called a three-layer Bayesian probability model, which includes a three-layer structure of words, topics and documents.
- the document to topic follows a polynomial distribution, and the subject to the word follows a polynomial distribution.
- a topic is extracted from the topic distribution, and a word is extracted from the word distribution corresponding to the extracted topic; the above process is repeated until each word in the document is traversed, thereby obtaining the subject of the document.
- the document is a dialogue record between the visitor and the customer service in the present invention.
- a raw corpus is divided into topics such as weather queries, train inquiries, flight inquiries, and the like.
- the identification and extraction of the entity relationship for each topic type is performed by parsing and semantically parsing the original corpus, and extracting the relationship between the entity information and the tagged entity information according to the parsing result, and the entity may be used.
- the diagram is represented.
- Entity relationship diagram A shorthand E-R diagram refers to the basic structure of data summarized by three basic concepts of entity, relationship and attribute.
- the entity is a named entity, which includes a text entity with explicit semantic information such as a name (organization name, person name, place name, trade name), an expression (date, time), etc., used in the ER diagram.
- the rectangle indicates that the name of the entity is written in the rectangle; for example, the visitor is an entity.
- the attribute, an attribute possessed by the entity, an entity can be characterized by several attributes; it is represented by an ellipse in the ER diagram, and is connected with the corresponding entity by an undirected edge; for example, the name of the visitor , account number, gender, etc., are attributes.
- the relationship refers to a way in which data objects are connected to each other, including a one-to-one relationship, a one-to-many relationship, and a many-to-many relationship.
- the topic structure tree includes current topic information and inter-topic association information, and all types of topics are indexed according to the inter-topic relationship information to obtain a topic forest knowledge base.
- a conversation may be limited to a single topic within a domain, or it may involve multiple topics in multiple domains.
- the topic type is searched for by the topic forest knowledge base, and the necessary and optional attributes of the topic type are obtained to confirm the integrity of the problem.
- the topic type matching is performed on the visitor problem by performing word segmentation processing and keyword extraction on the visitor problem, matching the type of the topic to which the keyword is matched according to the extracted keyword, and filling the visitor question into the location.
- the necessary semantic slots and/or optional semantic slots in the semantic framework model corresponding to the topic type are necessary semantic slots and/or optional semantic slots in the semantic framework model corresponding to the topic type.
- filling the guest question into the semantic slot in the semantic framework model corresponding to the topic type using the natural language framework parser to populate the corresponding content in the guest question into each of the semantic framework models. In the semantic slot.
- the necessary semantic slots of the filled semantic framework model and the guest problem of the optional semantic slot are mapped to the necessary attributes and optional attributes of the theme forest structure tree, and the extracted keywords are Matching the necessary attributes and optional attributes, and judging whether the necessary attributes are missing according to the matching result.
- the weather query topic is taken as an example for explanation:
- Optional attribute 1 Weather type, such as rain, snow, haze, etc.;
- the semantic framework model is generated according to the theme forest tree as follows:
- the results obtained after the weather query semantic framework model are as follows:
- Semantic Framework Weather Query
- the semantic framework model maps the above acquired content to the theme forest structure tree. After the theme forest structure tree is judged, it finds that it has met the necessary attribute 1 and the necessary attribute 2, so the problem query is made into the knowledge base and the query result (answer ) Feedback to visitors.
- the present invention also provides a human-machine dialogue system based on a semantic framework, which includes:
- a topic tree creation module which creates a topic forest tree according to the original corpus, and extracts an entity attribute corresponding to each topic type in the topic forest tree;
- a semantic framework model generating module which generates a semantic framework model by using the theme forest structure tree, and maps an entity attribute of the theme forest structure tree to a corresponding semantic slot in the semantic framework model;
- a human-machine dialog module for matching a topic type to a guest question, and populating a guest question into a semantic slot in a semantic framework model corresponding to the topic type;
- a problem matching module configured to map a guest problem of a semantic slot of the filled semantic framework model to an entity attribute of the topic forest structure tree, where the topic forest tree performs problem matching from the knowledge base according to the guest problem ;
- An answer feedback module for feeding back the answer corresponding to the matched question to the visitor.
- the term "comprises”, “comprising”, or any other variants thereof, is intended to encompass a non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements but also Other elements not explicitly listed, or elements that are inherent to such a process, method, item, or device.
- An element that is defined by the phrase “comprising a " does not exclude the presence of additional equivalent elements in the process, method, item, or device that comprises the element.
- all or part of the steps of implementing the foregoing embodiments may be completed by hardware, or may be instructed by a program to perform related hardware.
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Abstract
Description
Claims (10)
- 一种基于语义框架的人机对话方法,其特征在于,包括以下步骤:A man-machine dialogue method based on a semantic framework, characterized in that it comprises the following steps:a.根据原始语料创建主题森林结构树,并在所述主题森林结构树中提取每个主题类型对应的实体属性;a. creating a theme forest structure tree according to the original corpus, and extracting entity attributes corresponding to each topic type in the theme forest structure tree;b.利用所述主题森林结构树生成语义框架模型,并将所述主题森林结构树的实体属性映射至所述语义框架模型中对应的语义槽;b. generating a semantic framework model by using the theme forest structure tree, and mapping an entity attribute of the theme forest structure tree to a corresponding semantic slot in the semantic framework model;c.人机对话时,对访客问题进行主题类型的匹配,并将访客问题填充至所述主题类型对应的语义框架模型中的语义槽中;c. When the human-machine dialogue, the topic type is matched to the visitor question, and the visitor question is filled into the semantic slot in the semantic framework model corresponding to the topic type;d.将填充后的语义框架模型的语义槽的访客问题映射至所述主题森林结构树的实体属性中;d. mapping the guest problem of the semantic slot of the filled semantic framework model to the entity attribute of the topic forest tree;e.所述主题森林结构树根据所述访客问题从知识库中进行问题匹配,并将匹配的问题所对应的答案反馈给访客。e. The theme forest tree performs question matching from the knowledge base according to the visitor question, and feeds the answer corresponding to the matched question to the visitor.
- 根据权利要求1所述的一种基于语义框架的人机对话方法,其特征在于:所述的步骤d中,进一步根据映射后的主题森林结构树进行判断所述访客问题是否满足预设条件;当所述访客问题满足预设条件时,所述主题森林结构树根据所述访客问题从知识库中进行问题匹配;当所述访客问题未满足预设条件时,所述主题森林结构树将判断结果反馈至前端的对话机器人。The semantic framework-based human-machine dialogue method according to claim 1, wherein in the step d, determining whether the visitor problem satisfies a preset condition according to the mapped theme forest structure tree; When the visitor question satisfies a preset condition, the theme forest tree performs question matching from the knowledge base according to the visitor question; when the visitor question does not satisfy the preset condition, the theme forest tree will judge The result is fed back to the dialogue robot at the front end.
- 根据权利要求2所述的一种基于语义框架的人机对话方法,其特征在于:所述实体属性包括必要属性和可选属性,所述语义槽包括必要语义槽和可选语义槽;所述预设条件为必要属性是否完整;人机对话时,对访客问题进行主题类型的匹配,并将访客问题填充至所述主题类型对应的语义框架模型中的必要语义槽和/或可选语义槽中;并将填充后的语义框架模型的必要语义槽和可选语义槽的访客问题映射至所述主题森林结构树的必要属性和可选属性;再进一步根据映射后的主题森林结构树进行判断所述必要属性是否完 整;当所述访客问题的必要属性完整时,所述主题森林结构树根据所述访客问题从知识库中进行问题匹配;当所述访客问题的必要属性不完整时,所述主题森林结构树将缺失的必要属性反馈至前端的对话机器人,由所述对话机器人根据缺失的必要属性向访客进行追问,得到所述主题类型的所有必要属性。The semantic framework-based human-machine dialog method according to claim 2, wherein the entity attribute comprises a necessary attribute and an optional attribute, the semantic slot includes a necessary semantic slot and an optional semantic slot; The preset condition is whether the necessary attribute is complete; when the man-machine conversation is performed, the topic type is matched to the guest question, and the guest question is filled into the necessary semantic slot and/or the optional semantic slot in the semantic framework model corresponding to the topic type. And mapping the necessary semantic slots of the filled semantic framework model and the guest problem of the optional semantic slot to the necessary attributes and optional attributes of the topic forest structure tree; further determining according to the mapped theme forest tree Whether the required attribute is complete; when the necessary attribute of the visitor question is complete, the subject forest tree performs question matching from the knowledge base according to the visitor question; when the necessary attribute of the visitor question is incomplete, The theme forest tree feeds back the necessary attributes of the missing to the front-end dialogue robot, which is based on the missing The necessary attributes are asked by the visitor to get all the necessary attributes of the subject type.
- 根据权利要求1至3任一项所述的一种基于语义框架的人机对话方法,其特征在于:所述的步骤a中进一步包括:The human-machine dialogue method based on the semantic framework according to any one of claims 1 to 3, wherein the step a further comprises:a1.收集原始语料,并对原始语料进行主题聚类,得到不同类型的主题;A1. Collect the original corpus and perform subject clustering on the original corpus to obtain different types of topics;a2.对每个主题类型进行实体关系的识别和提取,并根据所述实体关系确定每个主题类型的实体属性;A2. Identify and extract an entity relationship for each topic type, and determine an entity attribute of each topic type according to the entity relationship;a3.根据所述实体属性,为每个类型的主题创建主题结构树,以及为所有的主题类型创建主题森林式知识库。A3. Create a topic tree for each type of topic based on the entity attributes, and create a topic forest knowledge base for all topic types.
- 根据权利要求4所述的一种基于语义框架的人机对话方法,其特征在于:所述的步骤a1中,对原始语料进行主题聚类,是利用LDA主题模型工具进行主题提取和主题分类。The semantic framework-based human-machine dialogue method according to claim 4, wherein in the step a1, subject clustering of the original corpus is performed by using the LDA topic model tool for topic extraction and topic classification.
- 根据权利要求4所述的一种基于语义框架的人机对话方法,其特征在于:所述的步骤a2中,对每个主题类型进行实体关系的识别和提取,是通过对原始语料进行语法解析和语义解析,根据解析结果提取实体信息和标注实体信息之间的关系。The human-machine dialogue method based on the semantic framework according to claim 4, wherein in the step a2, the entity relationship is identified and extracted for each topic type, and the original corpus is parsed by syntax analysis. And semantic parsing, extracting the relationship between the entity information and the annotated entity information according to the parsing result.
- 根据权利要求4所述的一种基于语义框架的人机对话方法,其特征在于:所述的步骤a3中,所述主题结构树包括当前主题信息和主题间关联信息,根据所述主题间关联信息将所有类型的主题进行关联索引,得到主题森林式知识库。The semantic framework-based human-machine dialog method according to claim 4, wherein in the step a3, the topic structure tree includes current topic information and inter-topic association information, according to the inter-topic association Information correlates all types of topics to get a topical forest knowledge base.
- 根据权利要求3所述的一种基于语义框架的人机对话方法,其特征在于:所述的步骤c中,是通过对访客问题进行分词处理和关键词提取,根据提取的关键词进行匹配其所属的主题类型,,并将访客问题填充至所述主题类型对应的语义框架模型中的必要语义槽和/或可选语义槽中。The semantic framework-based human-machine dialogue method according to claim 3, wherein in the step c, the word segmentation processing and keyword extraction are performed on the visitor problem, and the extracted keywords are matched. The topic type, and the guest question is populated into the necessary semantic slots and/or optional semantic slots in the semantic framework model corresponding to the topic type.
- 根据权利要求8所述的一种基于语义框架的人机对话方法,其特征在于:所述的步骤d中,是通过将填充后的语义框架模型的必要语义槽和可选语义槽的访客问题映射至所述主题森林结构树的必要属性和可选属性,并将提取的关键词与所述必要属性和可选属性进行匹配,根据匹配结果判断是否缺失必要属性。The semantic framework-based human-machine dialogue method according to claim 8, wherein the step d is a guest problem by using a necessary semantic slot of the filled semantic framework model and an optional semantic slot. Mapping to the necessary attributes and optional attributes of the topic forest tree, and matching the extracted keywords with the necessary attributes and optional attributes, and determining whether the necessary attributes are missing according to the matching result.
- 一种基于语义框架的人机对话系统,其特征在于,包括:A human-machine dialogue system based on a semantic framework, which is characterized in that it comprises:主题结构树创建模块,其根据原始语料创建主题森林结构树,并在所述主题森林结构树中提取每个主题类型对应的实体属性;a topic tree creation module, which creates a topic forest tree according to the original corpus, and extracts an entity attribute corresponding to each topic type in the topic forest tree;语义框架模型生成模块,其利用所述主题森林结构树生成语义框架模型,并将所述主题森林结构树的实体属性映射至所述语义框架模型中对应的语义槽;a semantic framework model generating module, which generates a semantic framework model by using the theme forest structure tree, and maps an entity attribute of the theme forest structure tree to a corresponding semantic slot in the semantic framework model;人机对话模块,用于对访客问题进行主题类型的匹配,并将访客问题填充至所述主题类型对应的语义框架模型中的语义槽中;a human-machine dialog module for matching a topic type to a guest question, and populating a guest question into a semantic slot in a semantic framework model corresponding to the topic type;问题匹配模块,用于将填充后的语义框架模型的语义槽的访客问题映射至所述主题森林结构树的实体属性中,所述主题森林结构树根据所述访客问题从知识库中进行问题匹配;a problem matching module, configured to map a guest problem of a semantic slot of the filled semantic framework model to an entity attribute of the topic forest structure tree, where the topic forest tree performs problem matching from the knowledge base according to the guest problem ;答案反馈模块,用于将匹配的问题所对应的答案反馈给访客。An answer feedback module for feeding back the answer corresponding to the matched question to the visitor.
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CN108932278B (en) * | 2018-04-28 | 2021-05-18 | 厦门快商通信息技术有限公司 | Man-machine conversation method and system based on semantic framework |
CN109885835B (en) * | 2019-02-19 | 2023-06-27 | 广东小天才科技有限公司 | Method and system for acquiring association relation between words in user corpus |
CN112911073B (en) * | 2019-04-30 | 2023-04-25 | 五竹科技(北京)有限公司 | Intelligent knowledge graph construction method and device for outbound flow dialogue content |
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