MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS
Time period: 03/30/02 through 04/05/02
1.0 SUMMARY STATISTICS
_______________________
Relative use of BIOSIS databases:
Number of
Searches Records Presented
________ _________________
BIOSIS 16,770 406,567
BIO88 3,025 41,145
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 742 9,152
2-4 a.m. 227 2,900
4-6 a.m. 126 1,780
6-8 a.m. 311 10,141
8-10 a.m. 1,353 28,445
10-12 a.m. 3,534 74,786
12-2 p.m. 3,273 82,108
2-4 p.m. 3,931 97,824
4-6 p.m. 2,943 65,087
6-8 p.m. 1,365 27,819
8-10 p.m. 1,190 25,451
10-12 p.m. 800 22,219
__________ _____________ _________________
Total: 19,795 447,712
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 172
Davis 1,058
Irvine 34
Los Angeles 105
Riverside 114
San Diego 102
San Francisco 5
Santa Barbara 185
Santa Cruz 33
Lawrence Berkeley 1
Lawrence Livermore 0
Los Alamos 0
MELWEB 14,691
Searchlight 2,907
Other - UC 163
Other-Network UC 225
_____
19,795
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 2,046
Davis 17,344
Irvine 325
Los Angeles 1,330
Riverside 1,065
San Diego 1,151
San Francisco 75
Santa Barbara 1,748
Santa Cruz 258
Lawrence Berkeley 13
Lawrence Livermore 0
Los Alamos 0
MELWEB 404,198
Searchlight 14,406
Other - UC 543
Other-Network UC 3,210
_____
447,712
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 1.6
Standard deviation in seconds 6.3
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.2
Standard deviation in seconds 0.3
2.0 BIOSIS Databases Detailed Statistics
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Median session length (minutes:seconds) 21:22
Average session length (minutes:seconds) 19:00
Longest session recorded (minutes:seconds) 169:06
Average number of searches completed per session 0.0
Retrievals per search - median 8.0
Retrievals per search - average 1119.7
Retrievals per search - standard deviation 12729
Percent of searches completed with 0 results 19.9%
Percent of searches entered that are long 0.1%
Percent of long searches completed
(includes partial results) 100%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
SEARCH 19,795 14.4%
PRESENT 108,668 78.9%
INIT or CLOSE 8,389 6.1%
OTHER 818 0.6%
SEARCHes completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. SEARCHes No. Index Median Avg. Dev.
______ _________ ______ _______ ______ __________ _______
By index:
PERSONAL AUTHOR 6,320 23.8% 1,053 16.7% 9 97.4 859.5
TITLE WORD 2,605 9.8% 711 27.3% 3 310.8 2948.6
EXACT TITLE 199 0.7% 131 65.8% 1 154.9 1070.0
KEYWORD 11,901 44.8% 2,267 19.0% 22 1987.4 17673.5
JOURNAL 1,138 4.3% 392 34.4% 3 1912.7 13309.7
EXACT JOURNAL 239 0.9% 110 46.0% 18 1773.7 5500.5
SOURCE 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 1 0.0% 1 100% 0 0.0 0.0
BIOSYS NAMES 12 0.0% 7 58.3% 25 44.0 65.4
BIOSYS CODES 1 0.0% 0 0.0% 411 411.0 0.0
SUPERTAXA 26 0.1% 1 3.8% 25 783.9 3161.6
MAJ CONCEPT CDES 1 0.0% 0 0.0% 12,540 12540.0 0.0
CONCEPT CODES 9 0.0% 2 22.2% 22 18560.4 45872.9
PUBLICATION TYPE 33 0.1% 2 6.1% 13 111.8 243.7
DATE 152 0.6% 31 20.4% 6 64.1 199.0
LANGUAGE 16 0.1% 1 6.3% 29 163.7 471.2
ADDED 648 2.4% 372 57.4% 6 12.8 23.1
AUTHOR AFFIL. 80 0.3% 24 30.0% 9 42.3 211.0
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 1 0.0% 1 100% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
ISN 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AT 107 0.4% 26 24.3% 14 228.9 1203.8
Other indexes 3,090 11.6% 505 16.3% 19 704.7 6811.9
RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. SEARCHes No. Index Median Avg. Dev.
______ _________ ______ _______ ______ __________ _______
By number of indexes:
Multiple 5,500 27.8% 1,366 24.8% 7 323.1 4936.6
Single 14,295 72.2% 2,578 18.0% 23 1777.6 16250.0
PRESENT commands, by type:
MARC 53.4%
OPAC 24.6%
SBImm/dd srv.bio MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS (weekly)