MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS
Time period: 05/05/01 through 05/11/01
1.0 SUMMARY STATISTICS
_______________________
Relative use of BIOSIS databases:
Number of
Searches Records Presented
________ _________________
BIOSIS 18,483 465,530
BIO88 3,533 55,724
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 627 9,877
2-4 a.m. 450 4,128
4-6 a.m. 156 2,515
6-8 a.m. 530 8,180
8-10 a.m. 1,451 31,639
10-12 a.m. 3,212 80,398
12-2 p.m. 3,643 92,953
2-4 p.m. 4,334 107,408
4-6 p.m. 3,331 78,713
6-8 p.m. 1,998 50,186
8-10 p.m. 1,379 32,134
10-12 p.m. 905 23,123
__________ _____________ _________________
Total: 22,016 521,254
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 305
Davis 1,078
Irvine 23
Los Angeles 86
Riverside 80
San Diego 200
San Francisco 5
Santa Barbara 81
Santa Cruz 85
Lawrence Berkeley 4
Lawrence Livermore 4
Los Alamos 0
MELWEB 16,624
Searchlight 3,053
Other - UC 12
Other-Network UC 376
_____
22,016
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 3,257
Davis 14,080
Irvine 225
Los Angeles 2,602
Riverside 1,177
San Diego 941
San Francisco 87
Santa Barbara 3,091
Santa Cruz 2,928
Lawrence Berkeley 5
Lawrence Livermore 71
Los Alamos 0
MELWEB 476,493
Searchlight 9,467
Other - UC 707
Other-Network UC 6,123
_____
521,254
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 1.8
Standard deviation in seconds 6.2
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.2
Standard deviation in seconds 0.6
2.0 BIOSIS Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 21:28
Average session length (minutes:seconds) 20:18
Longest session recorded (minutes:seconds) 250:38
Average number of searches completed per session 0.0
Retrievals per search - median 7.0
Retrievals per search - average 1022.4
Retrievals per search - standard deviation 16599
Percent of searches completed with 0 results 20.6%
Percent of searches entered that are long 0.2%
Percent of long searches completed
(includes partial results) 100%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
SEARCH 22,016 13.7%
PRESENT 130,332 80.9%
INIT or CLOSE 8,496 5.3%
OTHER 298 0.2%
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 6,186 19.5% 1,062 17.2% 8 112.1 1089.3
TITLE WORD 3,083 9.7% 1,091 35.4% 3 289.5 3655.6
EXACT TITLE 137 0.4% 85 62.0% 1 73.9 287.0
KEYWORD 13,840 43.7% 2,458 17.8% 21 1619.0 22492.7
JOURNAL 1,142 3.6% 389 34.1% 5 1302.2 7286.2
EXACT JOURNAL 237 0.7% 97 40.9% 157 1440.8 3993.0
SOURCE 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
BIOSYS NAMES 29 0.1% 19 65.5% 167 2990.3 9015.5
BIOSYS CODES 0 0.0% 0 0.0% 0 0.0 0.0
SUPERTAXA 91 0.3% 16 17.6% 16 244.3 891.4
MAJ CONCEPT CDES 2 0.0% 0 0.0% 46,089 46088.5 33015.5
CONCEPT CODES 9 0.0% 1 11.1% 167 157.3 114.2
PUBLICATION TYPE 72 0.2% 11 15.3% 23 344.6 1061.5
DATE 223 0.7% 40 17.9% 6 87.2 364.9
LANGUAGE 68 0.2% 12 17.6% 33 299.3 681.1
ADDED 995 3.1% 786 79.0% 3 10.6 33.9
AUTHOR AFFIL. 85 0.3% 38 44.7% 11 16.8 24.5
ACCESSION NO. 1 0.0% 1 100% 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 5 0.0% 0 0.0% 842 935.2 1170.7
AT 342 1.1% 71 20.8% 13 393.7 3678.7
Other indexes 5,125 16.2% 1,035 20.2% 14 1118.2 9053.1
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 6,853 31.1% 1,941 28.3% 7 448.6 4243.6
Single 15,163 68.9% 2,589 17.1% 21 1614.9 21784.1
PRESENT commands, by type:
MARC 54.1%
OPAC 31.8%
SBImm/dd srv.bio MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS (weekly)