Evaluation of bibliographic data base operation in an SDI system

1984 ◽  
Vol 8 (2) ◽  
pp. 57-61 ◽  
Author(s):  
Kazimierz Kowalski ◽  
Aleksander Zgrzywa
Keyword(s):  
Data Base ◽  
Data Bases ◽  
Bibliographic Data ◽  
The Relationship ◽  
Base Operation

This paper presents the results of an investigation of the operation of bibliographic data bases. The investigations were concerned with the length of information queries and the number of answers as well as the relationship between them, depending on the data base. The results obtained can affect the assumptions and strategy of operating the data bases in SDI systems.

scholarly journals Application of the Variety-Generator Approach to Searches of Personal Names in Bibliographic Data Bases--Part 2. Optimization of Key-Sets, and Evaluation of Their Retrieval Efficiency

1974 ◽  
Vol 7 (3) ◽  
pp. 201
Author(s):  
Dirk W. Fokker ◽  
Michael F. Lynch
Keyword(s):  
Information Systems ◽  
Data Base ◽  
Variable Length ◽  
Data Bases ◽  
Personal Names ◽  
Fixed Length ◽  
Bibliographic Data ◽  
Retrieval Efficiency ◽  
Types Of Information ◽  
High Degree

<p class="p1">Keys consisting of variable-length chamcter strings from the front and rear of surnames, derived by analysis of author names in a particular data base, am used to provide approximate representations of author names. When combined in appropriate ratios, and used together with keys for each of the first two initials of personal names, they provide a high degree of discrimination in search.</p> <p class="p1">Methods for optimization of key-sets are described, and the performance of key-sets varying in size between <span class="s1">150 </span>and <span class="s1">300 </span>is determined at file sizes of up to <span class="s1">50,000 </span>name entries. The effects of varying the proportions of the queries present in the file are also examined. The results obtained with fixed-length keys are compared with those for variable-length keys, showing the latter to be greatly superior.</p> <p class="p1">Implications of the work for a variety of types of information systems are discussed.</p>

The use of thesauri in online retrieval

1984 ◽  
Vol 8 (2) ◽  
pp. 63-66 ◽  
Author(s):  
C.P.R. Dubois
Keyword(s):  
Information Retrieval ◽  
Data Base ◽  
Case Studies ◽  
Controlled Vocabulary ◽  
Free Text ◽  
Data Bases ◽  
Online Data ◽  
Controlled Vocabularies ◽  
Semantic Maps ◽  
Actual Use

The controlled vocabulary versus the free text approach to information retrieval is reviewed from the mid 1960s to the early 1980s. The dominance of the free text approach following the Cranfield tests is increasingly coming into question as a result of tests on existing online data bases and case studies. This is supported by two case studies on the Coffeeline data base. The differences and values of the two approaches are explored considering thesauri as semantic maps. It is suggested that the most appropriate evaluatory technique for indexing languages is to study the actual use made of various techniques in a wide variety of search environments. Such research is becoming more urgent. Economic and other reasons for the scarcity of online thesauri are reviewed and suggestions are made for methods to secure revenue from thesaurus display facilities. Finally, the promising outlook for renewed develop ment of controlled vocabularies with more effective online display techniques is mentioned, although such development must be based on firm research of user behaviour and needs.

scholarly journals Intergovernmental Organizations and Foreign Policy Behavior: Some Empirical Findings

1979 ◽  
Vol 73 (2) ◽  
pp. 494-504 ◽  
Author(s):  
James M. McCormick ◽  
Young W. Kihl
Keyword(s):  
Foreign Policy ◽  
Data Base ◽  
Comparative Research ◽  
Intergovernmental Organizations ◽  
Data Set ◽  
The World ◽  
The Relationship ◽  
Policy Behavior ◽  
High Politics ◽  
Foreign Policy Behavior

In this study, we evaluate whether the increase in the number of intergovernmental organizations (IGOs) has resulted in their increased use for foreign policy behavior by the nations of the world. This question is examined in three related ways: (1) the aggregate use of IGOs for foreign policy behavior; (2) the relationship between IGO membership and IGO use; and (3) the kinds of states that use IGOs. Our data base consists of the 35 nations in the CREON (Comparative Research on the Events of Nations) data set for the years 1959–1968.The main findings are that IGOs were employed over 60 percent of the time with little fluctuation on a year-by-year basis, that global and “high politics” IGOs were used more often than regional and “low politics” IGOs, that institutional membership and IGO use were generally inversely related, and that the attributes of the states had limited utility in accounting for the use of intergovernmental organizations. Some of the theoretical implications of these findings are then explored.

scholarly journals SURVEY OF BREAST CANCER IN WASIT PROVINCE , IRAQ

2019 ◽  
Vol 1 (2) ◽  
pp. 33-38
Keyword(s):  
Breast Cancer ◽  
Data Base ◽  
Causes Of Death ◽  
Common Type ◽  
Age Group ◽  
Cancer Data ◽  
Common Causes ◽  
Total Cancer ◽  
And Gender ◽  
The Relationship

Introduction: Cancer is one of the most common causes of death among females. In our research, cancer data were collected in Wasit Governorate for patients who were referred to Al-Zahra Educational Hospital for the period From February 2010 to February 2019. The results showed that breast cancer is the most common type of cancer in Wasit governorate and by percentage (35.4%) with 341 out of 966 cases of cancer. Methods: Data were collected from data base between the year (2010 to 2019), with the highest rate of cases in 2013, which isaround 139 cases , of these cases around 71 were breast cancer (51.07% recurrence). Surprisingly the lowest cases were recorded in a year after (2014) with total cancer cases of 65 from them 21 cases of breast cancer only. Results: About the relationship between breast cancer and gender, breast cancer recorded 95.60% of the cases in females, while percentage of men cases only 4.39%. Conclusion: The higher percentage of the cases were around 40- 49 years old , 92 cases (27%) , 80 cases (23.5%) were in the age group (50-59 years) and 65cases (19%) were in the age group (30-39 years) and 51 cases (15%) were in the age group (60-69 years) ). The lowest percentage of breast cancer was in the 10-19 age group, with only two cases (0.5%).

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