Proceedings of the Symposium on Global and Environmental Monitoring: Proceedings of the Symposium on Global and Environmental Monitoring

Bibliographic data

Multivolume work

Persistent identifier:: 856665355

Title:: Proceedings of the Symposium on Global and Environmental Monitoring

Sub title:: techniques and impacts ; September 17 - 21, 1990, Victoria Conference Centre, Victoria, British Columbia, Canada

Year of publication:: 1990

Place of publication:: Victoria, BC

Publisher of the original:: [Verlag nicht ermittelbar]

Identifier (digital):: 856665355

Language:: English

Document type:: Multivolume work

Volume

Persistent identifier:: 856669164

Title:: Proceedings of the Symposium on Global and Environmental Monitoring

Sub title:: techniques and impacts; September 17 - 21, 1990, Victoria Conference Centre, Victoria, British Columbia, Canada

Scope:: XIV, 912 Seiten

Year of publication:: 1990

Place of publication:: Victoria, BC

Publisher of the original:: [Verlag nicht ermittelbar]

Identifier (digital):: 856669164

Illustration:: Illustrationen, Diagramme, Karten

Signature of the source:: ZS 312(28,7,1)

Language:: English

Usage licence:: Attribution 4.0 International (CC BY 4.0)

Editor:: International Society for Photogrammetry and Remote Sensing, Commission of Photographic and Remote Sensing Data

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2016

Document type:: Volume

Collection:: Earth sciences

Chapter

Title:: [WA-1 KNOWLEDGE-BASED TECHNIQUES/ SYSTEMS FOR DATA FUSION]

Document type:: Multivolume work

Structure type:: Chapter

Chapter

Title:: A QUASI-INTELLIGENT GEOGRAPHICAL INFORMATION SYSTEM. K. Becek, and J. C. Trinder

Document type:: Multivolume work

Structure type:: Chapter

157 TABLE UCH (The characteristic of the user) QTYPE NOE NOU DATE Q1 14 56 12-04-90 Qn 10 74 20-04-90 QTYP the type of a query NOE the number of errors NOU number of times queiy used DATE date of last addition to NOU Q1 "SELECT" Q2 "INSERT", etc Figure 1. Structure of the database ’’The characteristic of the user" The sequence of operations which perform this procedure is as follows: a. The user introduces a query. b. The system checks the query for correctness in relation to the language rules. c. If an error has occurred, the procedure for identification and correction of errors is activated. In the database "the characteristic of the user" is stored the information about the error made by that user. d. If no error has been detected the information about the use of the query is stored. e. On the basis of the frequency of errors, the appropriate level of the help message is displayed. f. The user continues execution of the corrected query. In this implementation of quasi- intelligent "help" three levels of the help messages have been introduced: Level 1 will be displayed if p (the frequency of the error) > 0.3, level 2 if 0.1 =< p =< 0.3 and level 3 if p < 0.1. The boundary of the intervals do not have any theoretical background since they are empirically derived based on tests. The experiments have shown that the effectiveness and the ease of operation of a system equipped with a such quasi-intelligent help are much higher than where traditional "help" is employed. 3.3 A Procedure for Identification and Execution of the Typical Tasks. Work with a GIS can be consider as a sequence of queries. In almost all cases, each particular user performs individual type(s) of task(s). This means that in each work session he/she will use typically the same, sequence of queries, the difference being only in the data sets employed. Such an approach is not efficient if lengthy periods are spent inputting information via the keyboard. Formulation of identical sequences of queries in each session can be utilised to improve the effectiveness and speed of operation of the system. This can be achieved by the following procedure. (i) For each "new" user the system creates a database which we call "YOUR_JOB" (Figure 2). TABLE YOUR.JOB (The database of typical tasks) SQNO SQSTR 1 Ql...Qi...Qn N Qi...Qj...Qk SQNO sequence number SQSTR sequence structure and associated TABLE QBASE (The database of queries structure) QTYPE QSTR Q1 "SELECT FROM..." Qn "DELETE ...FROM..." QTYPE the type of a query QSTR the structure of a query Figure 2. Structure of the database "YOUR_JOB". (ii) During several work sessions, the system introduces to the database the sequence of queries used in each session. (iii) Then the system makes a decision in regard to its mode of operation. (iv) The user is informed that a sequence or sequences of queries, which will be considered

Access restriction

Copyright

fullscreen: Proceedings of the Symposium on Global and Environmental Monitoring (Part 1)

Multivolume work

Volume

Chapter

Chapter

Table of contents

Cite and reuse

Volume

Chapter

Image

Image fragment

Citation links

Citation recommendation