Improvement of the Expert System Shell Pro/3 Sentence Input Function and Exploration of Batch Computers Security Assessment

Transcription

1 Advanced Materials Research Online: ISSN: , Vol. 684, pp doi: / Trans Tech Publications, Switzerland Improvement of the Expert System Shell Pro/3 Sentence Input Function and Exploration of Batch Computers Security Assessment Qiming Cui 1, a, Shaogang Hu 1,b, Rui Zhao 1,c, Jun Liu 1,d, Shengwei Liu 1,e, Hongxing Liu 1,f, and Zhenqiang Fu 1,g 1 Liaoning Anshan Power Supply Company, ,Anshan, China a ospb2002@yahoo.com.cn, b huas201278@ yahoo.com.cn, c lnasfu@163.com, d kejixinxi@163.com, e liuwei @yahoo.com.cn, f lnlhx@tom.com, g fuzhenqiang1110@163.com Keywords: Expert System, Expert System Shell, Power Supply Company Desktop Terminal Computer, Visual Prolog, Pro/3 Abstract. Improvement of the expert system shell Pro/3 sentence record input function is introduced. The function of the Pro/3 inputting disposable a large quantities of sentence records corresponding to a sentence, i.e., batch inputting the sentence records, was implemented. The basic security condition assessment method of some desktop terminal computers in the power supply company was explored to achieve the expert system about these desktop terminal computers basic security condition assessment. Experimental results show that the batch inputting sentence records function is more effective and the desktop terminal computers basic security condition assessment expert system is feasible. Introduction With the constantly deepening of information technology and application, many managements and businesses of some power supply companies are increasingly inseparable from these companies's information network. Meanwhile, the information network becomes more complex, the information systems are used more deeply,and especially the desktop terminal computers are increasing largely. These show that the importance of the desktop terminal computers security management is prominent in the management of information network.for many power supply companies, the desktop terminal computers security involves the companies's information security and the operation of the business systems. Therefore, the desktop terminal computers security management must be strengthened. At present, the management of the desktop terminal computers mainly focuses on whether there exsits any illegal operation (such as a intranet is directly connected to the internet) event and conforms to the requirement of installing antivirus software on the desktop terminal computers and the registration rate of the desktop terminal computers, but not having a assessment system of the desktop terminal computers basic security situation.therefore,by exploring the application of the desktop terminal computers basic security assessment expert system based on the Pro/3 and previous work [1], the basic security statuses will be given in order to provide some references of the desktop terminal computers security management. The ultimate goal should strengthen the information security of the companies. The expert system shell Pro/3 The Pro/3 [2]is an expert system shell consisted of some knowledge models with some facts, logic rules and other knowledges. The knowledge models can be used for handling statistical and other operations on sets of facts, as well as reasoning of inexact rules with certainty factors,probabilities and fuzzy sets. The Pro/3 can be used as a backward chaining system, and also a forward chaining. Meanwhile, the Pro/3 is also a production system. In general,there exist four knowledge representations,namely sentences (or facts), sentence rules,inexact rules,fuctions in the Pro/3. All rights reserved. No part of contents of this paper may be reproduced or transmitted in any form or by any means without the written permission of Trans Tech Publications, (ID: , Pennsylvania State University, University Park, USA-10/05/16,18:25:26)

2 556 Advances in Applied Materials and Electronics Engineering II The design and implementation of the batch sentence records input function in the Pro/3 Basic idea.when inputting a new sentence, some records corresponding to the sentence are inputted one at a times in the sentence types and groups submenu of the sentence menu in the original Pro/3.If there exist a large number of the sentence records need to be input, this input efficiency will be very low.if a sentence is corresponding to a table record(or partly) in a database or a Excel sheet, the table or sheet content can be exported to a text file for future use.the File Process (used for the text file process) and New sentence(batch) (for inputting the batch sentence records) button function were added and the Enter new type and New sentences (changed into New sentence(one) ) button function were improved in the original Pro/3 in order to input the batch sentence records. The result is that not only the Pro/3 can be used for inputting the batch sentence records, but also for every times inputting a sentence record.the program files modified include the sentence.pro, the sentences.pro, the sentence.cl, the sentences.cl, the tedbutton.pro, and the tedbutton.cl,also add the tedp311 directory and files: the tedp311.pro, the tedp311.cl, the tedp311.pack, the tedp311.ph, and the tedp311.i. A example of involving the text file format.the file format named mtest2012.txt exported from a database table or a Excel sheet is as follows (here considering three types of data: string, real, integer): 2 ; the data line number in the text file, namely the total number of records, ; manual setting after exporting the text file; Stringvalue ; the first record, each record has three fields; Stringvalue ; the second record. The file format named test2012.txt generated by File Process button is as follows: 6 ; the total number of data records, manual setting; 3 ; the number of field in each record, manual setting; Stringvalue1 ; the first field value in the first record; ; the second field value in the first record; 6 ; the third field value in the first record; Stringvalue2 ; the first field value in the second record; ; the second field value in the second record; 8 ; the third field value in the second record. The basic steps of batch inputting sentence records.1) Export some available contents of a table in a database or a Excel sheet to the text file named mtest2012.txt, and manual add a total number of records in the mtest2012.txt file. 2) Eexecut the File Process function in order to create the test2012.txt file, and manual add the total number of data records and the number of field in each record in the test2012.txt file. 3) Perform the sentence types and groups submenu in the sentence menu, there are two cases: a) A definition of a new sentence such as computer has configuration. The first, select has in sentence groups column, computer in 1st entity argument column, and configuration in 2nd entity argument, then execute the Enter new type function so that a table form can be displayed(see Fig.1). The second, input a sentence record such as test 1, 1, 1, 1, 1 (any value of as long as the type corresponding to the type of domain column)in the value column in the table form,and press the Save New button, then the sentence computer has configuration is generated. The third, close the sentence types and groups window, again open it,select the computer has configuration,press the New sentence (batch) button,and input a boot record such as test2, 2, 2, 2, 2, 2 (similar to Fig.1), then all the records in the test2012.txt file automatically will be inputted to the records of sentence computer has configuration but the boot record. The sentence record of test, 1, 1, 1, 1, 1 can then be deleted manual. b) If a sentence already exists, then select it directly, and start the batch sentence records input operation by pressing the New sentence (batch) button.

3 Advanced Materials Research Vol Fig.1 The interface of sentence types and groups Fig.2 The sentences and the result of assessment The desktop terminal computers basic security assessment expert system Based on above work and using some index data in the desktop terminal computers management system, the expert system of the desktop terminal computers basic security assessment had been design and implemented.the basic idea of it is as follows: 1) At a given time point, some index data of the batch desktop terminal computers such as the virus behavior, the weak password,the patch installation, the blocking alarm, the equipment variation (such as a mobile storage medium) in the desktop terminal computers management system are captured by the data export function of the management system.these data are the accumulative values of all the index data at end of this time point. The sentences corresponding to these index data such as the computer has virus behavior, and the computer has weak password are created in the expert system(see Fig.2). The batch sentence records are then inputted respectively. 2) These index data in each sentence record are quantitatively processed by calling some functions based on the Pro/3[3],and its quantification processing rules are shown in the Fig.6, the Fig.7,and the Fig.8.During each assessment period, a highest value limit and a lowest limit of each index data,and some other options are given by a user.meanwhile, the expert system also consider maximum value and minimum constraint of whole index data.the sentences with quantified data are used for a ordered weighted averaging operation(see Fig.3) and then its result is processed together with a sentence computer within count constraints in a standard intersection operation (see Fig.4). The assessment result is shown a data table in the Fig.2. The deviceid column of the data table gives the identifications of some desktop terminal computers and the degree of assessment column gives the basic security assessment values of these desktop terminal computers.the higher the value, the worse the security degree or the security degree is relatively poor. The analysis of the expert system operation process The goal of the expert system is to derive a sentence computer are assessment.the Fig.5 is the rule tree of the sentence computer are assessment.the sentence is derived from the sentence computer has configuration.the deviceid of the computer has configuration is assigned to the subject computer of the computer are assessment. The predicate are assessment of the computer are assessment is assigned through its degree of assessment data elements by invoking a inexact rule sentence unsafe computer after a series of operation.while the unsafe computer is the result of the standard intersection operation between a sentence computer that match preference and the computer within count constraints (see Fig.4).The computer that match preference is completed in the ordered weighted averaging operation(see Fig.3). The computer within count constraints can be used in constrainting values of all the index data.the expert system takes 52 seconds to derive 7 sentences containing 847 records (a computer corresponding to 7 sentence records) and 4 inexact rules (including some question rules)in the forward inference operation on a PC(cpu:3.29Ghz, memory: 1.82Gb). The program processing flows of the New sentence (batch) and the New sentence(one) are shown in the Fig.9 and the Fig.10 respectively.

4 558 Advances in Applied Materials and Electronics Engineering II Fig.3 The operation of ordered weighted averaging Fig.4 The operation of standard intersection Fig.5 The rule tree of assessment Fig.6 The count<lowest count Fig.7 The count>highest count Fig.8 Lowest count<=the count<=highest count Fig.9 Batch process flow Fig.10 One process flow Conclusions The batch inputting method of sentence records in the Pro/3 was given and its function had been implemented. It can be obviously seen that the efficiency of inputting new sentence records is improved greatly by some testing,especially where there exist many sentences (including a large of data elements in each sentence) and each sentence corresponds to thousands of sentence records. The method and its feasibility of the desktop terminal computers basic security condition assessment in the power supply company were explored by implementing the desktop terminal computers basic security assessment expert system based on the improved Pro/3. Begin with,the relating index data are quantitatively processed in the expert system, and then the ordered weighted averaging and the standard intersection operation are executed, finally the expert system gives a number of the desktop terminal computers basic security assessment values.the assessment values provided are some references of that it can be used better understanding the desktop terminal computers basic security conditions of the company and more effectively doing the information security work.further work will include the optimization of the assessment model and expand the scope of the assessment. References [1] Qiming Cui, Shengwei Liu, Hongxing Liu, Zhihai Wang,in:Application Research of the Production System- type Expert System Shell Pro/3 under Smart Grid, IEEE PES ISGT ASIA 2012, IEEE Xplore. [2] Jens Hintze Holm:Pro/3 - A Production System-type Expert System Shell, Visual Prolog Application & Language Conference,Portugal,April,2006. [3] Jens Hintze Holm, Pro/3 expert system shell, Information on

5 Advances in Applied Materials and Electronics Engineering II / Improvement of the Expert System Shell Pro/3 Sentence Input Function and Exploration of Batch Computers Security Assessment /