With the development of society, the company runs in a rapidly changing and unstable economy, and the enterprise faces the difficult of recording large amounts of management and operation data. The intensification of competition and the development of e-commerce require enterprises to have more accurate, timely and critical information, more in-depth financial analysis, more effective and timely communication and higher quality decision-making. Therefore, an enterprise financial decision support System (FDSS) was born at right moment. With the development of artificial intelligence technology, the FDSS combined with artificial intelligence technology becomes a research hotspot   . In 2005, Jiangsu Land Reclamation Group developed an advanced FDSS, which integrated the reporting standardization, intelligent decision and information network. The FDSS provided convenient and effective financial information support for making decision of enterprise. Artificial intelligence financial decision support system (AIFDSS) has been attracted many attention and applied for large enterprise groups.
Decision Support System (DSS) is a computer application system that can assist and support managers to make decisions and improve the effectiveness of decisions  . FDSS is a computer system formed by applying DSS design ideas and methods to financial management. FDSS is a computer system used by financial personnel to assist decision-making in financial management, financial control, financial analysis, financial forecasting and decision-making. The main decision-making problems in FDSS include  :
1) Structural decision making. Routine repetitive decision-making, with certain rules to follow, can make an orderly arrangement in advance to achieve the desired results and goals. It is usually possible to describe and solve problems by conventional quantitative mathematical methods.
2) Unstructured decision-making. It has never happened before, or the decision-making process structure is too complex to follow the rules, or it is especially difficult to describe and solve the decision-making problems that must be solved immediately once the key problems appear.
3) Semi-structured decision-making is a decision-making problem between structured decision-making and unstructured decision-making, which has two decision-making characteristics.
The traditional financial decision support system mainly consists of two parts: database and model library  . There is often little that can be done about semi-structured or unstructured problems.
Whereas, AIFDSS has a breakthrough in solving semi-structured or unstructured problems. The main difference between FDSS of artificial intelligence and the traditional FDSS structures is that the former joins knowledge-based systems and other business intelligence technologies to simulate human's peculiar thinking ability. It can not only solve the problem of conventional quantitative nature, but also can help decision-makers to recognize the decision environment, clear targets and solve the semi-structured or unstructured problems by providing background materials, helping clear the problem, modifying and perfecting the model, enumerating the possible schemes and analyzing and comparing  . Its features are as follows: 1) it has inference structure and can simulate the thinking process of decision makers; 2) it has learning function and increases the knowledge automatically. Therefore, it can be improved slowly with little or without intermediate maintenance; 3) solve semi-structured unstructured problems of financial decision-making more effectively; 4) it can track the solution process of the problem, prove the correctness of the financial model scheme, and enhance the credibility of the financial decision-making model scheme  .
Due to the wide application of AIDFSS, a lot of researches on its functional components and new technologies are emerging. In 1980, Sprague proposed a three-component theory, which includes dialogue component, data component and model component. It was the based theory of DSS and played a significant role in the subsequent development of DSS. In 1981, Bonczek proposed a three systems structure, namely the language system (LS), the problem processing system (PPS) and the knowledge system (KS). This structure has its characteristic in dealing with problem, which makes it have a better effect, and henceforth lay the foundation for intelligent decision-making system development. In the late 1980s, with the rise of artificial neural network and machine learning technology, integrated the artificial intelligence into the DSS to form traditional intelligent decision support system. With the application of expert systems technology, DSS can be used better in human’s knowledge, such as problem description knowledge, process knowledge and deductive knowledge for solving problem  . In addition, the development of artificial intelligence technology, expert system technology, database technology and internet/intranet technology provides powerful technical support for intelligent decision support system. Thus, some representative decision support technical tools were produced, including data warehouses    , on-line analytical processing, data mining  , ANN  , genetic algorithm and fuzzy logic  , which had a great influence on the evolution and development of the structure of intelligent decision support system.
The above literatures mainly focus on the design and function of one part. Few research studies all the components of the structure systematically. Therefore, in order to make up the literature gap, this paper studies the influence of each component and its sub-components on decision-making in the practical application of enterprises.
2. Artificial Intelligence Financial Decision Support System (AIFDSS)
From the perspective of the logical structure, intelligent decision support system generally can be divided into three parts: database, model base and knowledge base  . In the 1990s, the concept of data Warehouse, which combined with the traditional Intelligent FDSS further improved the effect of the auxiliary decision-making  .
Intelligent decision support systems are integrated by model bases, data warehouses, OLAP technologies, data mining, expert system and interactive interfaces. The data warehouse can realize the storage and synthesis of decision topics. OLAP technologies implement multidimensional data analysis, data mining is used to mine knowledge in database and data warehouse, model base realizes the combined aid decision of multiple generalized models, and expert system uses knowledge reasoning to achieve qualitative analysis. They complement each other, rely on each other, give full play to their respective auxiliary decision-making advantages and realize more effective auxiliary decision-making.
As the data warehouse has become an indispensable part of intelligent decision support system, it has been the prerequisite for it to make higher quality decisions   , and this paper mainly studies the requirements of AIFDSS on its components in the operation process. therefore, get rid of the business intelligence technology (OLAP and data mining), basing on the Efraim & Jay  proposed the basic structure of the decision support system, added data warehouse module, AIFDSS can be divided into data management subsystem, data Warehouse and model management subsystem and knowledge management subsystem of four parts, as shown in Figure 1.
Each component will be discussed in detail in the following sections.
3. Data Management Subsystem
Data management subsystem is the basis of decision analysis of AIFDSS.A system that stores relevant data for a particular situation consists of the following elements: database, database management system, data catalog and query function.
The database collects relevant data to meet the needs and structures of the organization and can be used by more users for more purposes. Data can be raw or generalized, including documents, images, maps, sound, video, and animations, concepts and ideas. Data sources can be divided into internal data sources, external data sources and personal data sources. The storage structure of database can be roughly divided into three categories: relational database, hierarchical database and network database  . In fact, the backstage of most management information systems is carried out in relational databases, such as Oracle and MS.
2) Data base management system
DBMS creates, users, and updates databases. An effective database and its management can support many management activities. Typical examples are browsing records, creating and maintaining a diverse set of data relationships,
Figure 1. Schematic diagram of main structure of AIFDSS.
and generating reports. The specific functions of the database management system are shown in Table 1.
3) Data catalog
A data catalog is a directory of all the data in a database. And it is a place where the database server stores data files, including not only the files on the table, but also the data files and server options files. The main function is to answer questions about data availability and the exact meaning of data source. Liking other directories, this directory supports adding new items, deleting items, and restoring information about specific objects.
4) Query function
The main tasks of the query function are to use, process, and query data. It accepts data requests from other DSS components, determines how those requests are met, explicitly expresses detailed requests and returns the results to the requester.
4. Data Warehouse
In essence, data warehouse technology is an information integration technology. The data warehouse obtains the original data from multiple information sources. These raw data are stored in the internal database of the data warehouse after sorting and processing, providing users with a unified, coordinated and integrated information environment, supporting the overall decision-making process of the enterprise and in-depth and comprehensive analysis of enterprise operation and management    . To achieve this goal, a data warehouse generally consists of the following seven main components  :
1) Source data
Source data is provided for the data warehouse, such as operational data of various production system databases, online transaction processing system (OLTP) and external data sources, which can all be used as data sources of the data warehouse.
2) Extraction, transformation and load tools
Its function is to extract data from the data source, check and organize the data, reorganize and process the data according to the design requirements of the data warehouse, and load it into the target database of the data warehouse.
3) Data modeling tool
The modeling tool establishes an information model for the source database of the data warehouse and the target database.
4) Central repository and data mart
This part is used to store data models and metadata. Meta data describes the information of the source data and the target data itself in the data warehouse, defines the transformation process from the source data to the target data, and is used to store the reorganized and sorted data. In some very large scale decision support applications, dedicated multidimensional databases have certain advantages. A data mart is a collection of DSS applications that supports a portion or specific business requirement. The data in the data mart still has the characteristics of data warehouse, except that the data in the data mart is customized for a certain department or a specific business need  .
5) Target database
The target database is used to store tested, sorted, processed, and reorganized data.
6) Front-end data access and analysis tools
Front-end data access and analysis tools provide business analysts and decision makers with access to data in the target database for further in-depth analysis.
7) Data warehouse management tools
Data warehouse management tools provide management means for data warehouse operation, including security management, storage management and other aspects.
We can see that in a data warehouse, the source data comes from the existing production system. As long as the data warehouse can provide the necessary information for the decision-making and analysis process supported by the data warehouse, it may become the data source of the data warehouse. Therefore, the data warehouse needs tools to extract data from the data source. Data must be validated before it can enter the data warehouse to eliminate errors that may be hidden in the data. In order to meet the need of decision support and in-depth analysis, data should pass special processing and reorganize, after inspection, sorting, processing and reorganizing, the data will be loaded into one or more of the data warehouse database, all these works are made by data extraction and conversion tools. In order to describe the requirements for data validation, collation, processing as well as the corresponding processes and steps, there must be data modeling tools.
5. Model Management Subsystem
The model management subsystem consists of the following elements: model base, model management system, modeling language, model directory, model execution, composition and instruction processor   .
1) Model base
The model library includes general and specialized statistical, financial, forecasting, management science, and other types of quantitative models. These models provide analytical capability for DSS. The model base has ability to invoke, run, modify, compose, and examine models. The models in the model base are divided into four types: strategic, tactical, operational, and analytical. In addition, there are model infrastructure artifacts and programs.
Model building module is a tool for data analysis, including the basic construction and program of the model, such as random number production program, curve or line fitting program, net present value rapid program and regression analysis. It can be applied not only directly as a model, but also as part of a larger model.
2) Modeling tool
When encountering semi-structured or unstructured problems, some model tools are needed, such as programming tools and language programming models, such as C++, Java, OLAP software, or spreadsheet (Excel).
3) Model base management system
The function of model base management system software is to use programming language, DSS tools or subroutines and other basic components to create models, generate new programs and reports, replace and transform models, and control model data. The specific functions are shown in Table 1.
4) Model catalog
The role of the model catalog is similar to that of the data catalog, which is the classification of all models. It includes model definition. The main function is to answer questions about the feasibility and function of the model.
5) Execution, composition and instructions
Model execution controls the actual operation of the model. Model composition includes the operation of integrating some models as needed (for example, managing the output of a model; For example, predictions are processed by another model, such as the linear programming model). The model instruction is used to accept and interpret instructions from the user interface portion and transmit them to the MBMS, model execution, or integration functions. Because in many cases, DSS systems do not know which models are used for which situations, these operations are typically assisted by knowledge system components and humans in intelligent financial DSS  .
6. Knowledge Management Subsystem
The knowledge management subsystem provides professional knowledge to solve many unstructured and even semi-structured problems, which is the biggest difference between the traditional FDSS and the AIFDSS. The knowledge management subsystem can also solve problems that cannot be solved by other decision support system components before and improve their operational execution ability. Its core system is the expert system   .
The name expert system derives from the term knowledge-based expert system. Expert systems use human knowledge acquired in computers to solve problems that usually require human expertise  . In every expert system, there are three main components: knowledge base, inference engine and user interface. The expert system that communicates with users may also include the following additional components: the knowledge acquisition subsystem, blackboard structure, explain subsystem, knowledge-refining system.
1) Knowledge acquisition
Knowledge acquisition is the accumulation, transfer and transformation of expertise from experts or records of knowledge sources to computer programs used to build or expand knowledge bases. Potential sources of knowledge include
Table 1. Components and Technology of AIFDSS.
human experts, textbooks, multimedia files, databases (public or private), special research reports, and information available from the web. Acquiring knowledge through experts is a very complex task. In the process of building a large system, we need a knowledge engineering or knowledge enlightening expert to communicate with one or more human experts. Typically, knowledge engineering helps experts build problem areas by interpreting and integrating the answers to human problems, proposing analogies, and constructing counterexamples to counter conceptual clarity.
2) Knowledge base
The knowledge base contains the knowledge needed to understand, explain, and solve problems. It includes two essential elements: a) Facts, such as problems and theories in the problem domain; b) Special heuristic algorithms or rules guiding knowledge to be applied in special fields to solve specific problems.
3) Inference engine
The “brain” of an expert system is an inference engine, also known as a control structure or rule interpreter. The component is essentially a computer program that provides a way to reason about information in the knowledge base and blackboard structures and draw conclusions.
4) User interface
The expert system provides a language processor for friendly problem communication between users and computers. This communication can be carried out through natural language. Due to the limitations of technology, most current systems use questions-and-answers to communicate with users. Sometimes it is supplemented by menus, spreadsheets, and graphics.
Blackboard architecture belongs to the field of working memory. It is used as a database to make a specific description of the current problem by entering data. It is also used to record the assumptions and decisions in the middle. Three types of decisions can be recorded in the blackboard structure: planning (how to solve a problem), agenda (potential action to be executed), and solution (candidate assumptions and action processes generated by the system so far).
6) Explanation subsystem
The ability to track the sources of conclusions is critical in the process of experience transfer and problem solving. The interpretation subsystem can track this responsibility and explain the behavior of the expert system through interactive questioning, asking the following questions: why does the expert system ask a question? How does a conclusion come about? Why would you reject other options? What is the plan to get the solution?
7) Knowledge-refining system
Human experts have a system of knowledge-refining system, that is, they can analyze their knowledge and its application, learn from it and improve gradually. Likewise, such assessments are necessary in computerized learning so that programs can analyze the reasons for their success or failure. This leads to a more accurate knowledge base and more efficient reasoning.
In conclusion, the functional structure of Financial Intelligence DSS can be listed in Table 1.
Due to the rapid development of artificial intelligence technology and the trend of promoting artificial intelligence in China in recent years, this paper mainly summarizes the functional structure and sub-components of enterprise financial decision support system under artificial intelligence. The main difference between AIFDSS and traditional FDSS is that the knowledge management subsystem (expert system) component is added to enable it to have some human reasoning and learning ability, so as to solve some structural or semi-structural problems. Therefore, when introducing the AIFDSS structure, this paper introduces the expert system in detail on the basis of introducing the basic construction and elaborates the relationship between them. The addition of expert system makes a qualitative leap in the auxiliary role of enterprise FDSS to the management decision maker, which can make the decision maker to solve the problem more clearly and quickly. In China, AIFDSS is still in the theoretical conceptual stage, and many technologies have not been applied and popularized. The research in this paper can provide some theoretical basis for researchers and pave the way for future practical research.
Conflicts of Interest
The authors declare no conflicts of interest regarding the publication of this paper.