MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS
Time period: 05/25/02 through 05/31/02
1.0 SUMMARY STATISTICS
_______________________
Relative use of BIOSIS databases:
Number of
Searches Records Presented
________ _________________
BIOSIS 17,947 454,738
BIO88 3,870 53,046
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 982 14,964
2-4 a.m. 275 5,189
4-6 a.m. 100 997
6-8 a.m. 610 5,787
8-10 a.m. 1,468 30,464
10-12 a.m. 3,289 78,078
12-2 p.m. 3,644 92,029
2-4 p.m. 4,050 101,538
4-6 p.m. 3,321 82,006
6-8 p.m. 1,658 41,393
8-10 p.m. 1,435 31,722
10-12 p.m. 985 23,617
__________ _____________ _________________
Total: 21,817 507,784
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 390
Davis 728
Irvine 44
Los Angeles 89
Riverside 123
San Diego 137
San Francisco 0
Santa Barbara 98
Santa Cruz 71
Lawrence Berkeley 1
Lawrence Livermore 0
Los Alamos 0
MELWEB 15,968
Searchlight 3,952
Other - UC 60
Other-Network UC 156
_____
21,817
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 6,129
Davis 10,687
Irvine 1,163
Los Angeles 1,578
Riverside 2,100
San Diego 894
San Francisco 0
Santa Barbara 316
Santa Cruz 939
Lawrence Berkeley 0
Lawrence Livermore 0
Los Alamos 0
MELWEB 462,773
Searchlight 11,212
Other - UC 291
Other-Network UC 9,702
_____
507,784
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 1.7
Standard deviation in seconds 7.6
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.2
Standard deviation in seconds 0.4
2.0 BIOSIS Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 21:00
Average session length (minutes:seconds) 18:17
Longest session recorded (minutes:seconds) 309:40
Average number of searches completed per session 0.0
Retrievals per search - median 7.0
Retrievals per search - average 961.4
Retrievals per search - standard deviation 13361
Percent of searches completed with 0 results 22.7%
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 21,817 13.6%
PRESENT 128,418 80.0%
INIT or CLOSE 9,375 5.8%
OTHER 832 0.5%
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 5,595 19.1% 1,004 17.9% 8 117.3 983.7
TITLE WORD 3,205 10.9% 1,137 35.5% 4 190.9 1777.2
EXACT TITLE 199 0.7% 118 59.3% 1 28.2 109.9
KEYWORD 13,889 47.3% 2,905 20.9% 22 1476.3 16924.3
JOURNAL 1,026 3.5% 360 35.1% 6 3427.5 20163.5
EXACT JOURNAL 190 0.6% 73 38.4% 284 2671.2 7242.1
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 32 0.1% 23 71.9% 14 65.1 109.4
BIOSYS CODES 2 0.0% 0 0.0% 16 15.5 12.0
SUPERTAXA 59 0.2% 19 32.2% 34 475.7 1098.9
MAJ CONCEPT CDES 2 0.0% 1 50.0% 197884 197884 0.0
CONCEPT CODES 9 0.0% 5 55.6% 175 10697.3 21160.9
PUBLICATION TYPE 37 0.1% 6 16.2% 25 371.6 960.3
DATE 94 0.3% 9 9.6% 5 32.8 83.2
LANGUAGE 47 0.2% 11 23.4% 89 515.0 1090.6
ADDED 870 3.0% 650 74.7% 3 12.4 31.8
AUTHOR AFFIL. 106 0.4% 40 37.7% 11 38.8 103.5
ACCESSION NO. 1 0.0% 1 100% 0 0.0 0.0
ISSN 0 0.0% 0 0.0% 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 1 0.0% 0 0.0% 3,136 3136.0 0.0
AT 246 0.8% 60 24.4% 16 261.3 948.8
Other indexes 3,727 12.7% 577 15.5% 31 1375.8 12561.5
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 5,919 27.1% 1,655 28.0% 9 558.5 3889.4
Single 15,898 72.9% 3,301 20.8% 20 1476.0 17417.4
PRESENT commands, by type:
MARC 53.0%
OPAC 33.8%
SBImm/dd srv.bio MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS (weekly)