MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS
Time period: 03/09/02 through 03/15/02
1.0 SUMMARY STATISTICS
_______________________
Relative use of BIOSIS databases:
Number of
Searches Records Presented
________ _________________
BIOSIS 21,923 567,428
BIO88 3,942 64,509
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 790 14,161
2-4 a.m. 368 5,839
4-6 a.m. 105 3,882
6-8 a.m. 341 9,568
8-10 a.m. 1,643 41,353
10-12 a.m. 3,797 83,310
12-2 p.m. 4,270 104,494
2-4 p.m. 5,371 135,167
4-6 p.m. 4,289 107,739
6-8 p.m. 2,287 53,964
8-10 p.m. 1,565 43,813
10-12 p.m. 1,039 28,647
__________ _____________ _________________
Total: 25,865 631,937
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 409
Davis 774
Irvine 20
Los Angeles 277
Riverside 27
San Diego 90
San Francisco 12
Santa Barbara 154
Santa Cruz 162
Lawrence Berkeley 0
Lawrence Livermore 2
Los Alamos 0
MELWEB 21,001
Searchlight 2,435
Other - UC 151
Other-Network UC 351
_____
25,865
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 5,217
Davis 12,090
Irvine 310
Los Angeles 4,704
Riverside 617
San Diego 1,195
San Francisco 25
Santa Barbara 1,121
Santa Cruz 1,145
Lawrence Berkeley 0
Lawrence Livermore 35
Los Alamos 0
MELWEB 588,844
Searchlight 11,248
Other - UC 814
Other-Network UC 4,572
_____
631,937
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 6.1
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) 21:59
Average session length (minutes:seconds) 21:50
Longest session recorded (minutes:seconds) 198:56
Average number of searches completed per session 0.0
Retrievals per search - median 7.0
Retrievals per search - average 993.9
Retrievals per search - standard deviation 15320
Percent of searches completed with 0 results 19.5%
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 25,865 13.8%
PRESENT 150,405 80.3%
INIT or CLOSE 9,943 5.3%
OTHER 1,061 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 8,000 22.3% 1,429 17.9% 8 159.7 1518.2
TITLE WORD 3,734 10.4% 1,154 30.9% 3 250.1 2138.7
EXACT TITLE 302 0.8% 155 51.3% 1 34.7 257.2
KEYWORD 15,189 42.3% 2,586 17.0% 21 1502.0 19242.0
JOURNAL 1,480 4.1% 510 34.5% 5 2322.5 14218.8
EXACT JOURNAL 330 0.9% 132 40.0% 11 1333.9 3546.7
SOURCE 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 2 0.0% 1 50.0% 2 2.0 0.0
BIOSYS NAMES 16 0.0% 9 56.3% 35 500.4 1071.6
BIOSYS CODES 0 0.0% 0 0.0% 0 0.0 0.0
SUPERTAXA 85 0.2% 20 23.5% 25 103.1 234.6
MAJ CONCEPT CDES 1 0.0% 0 0.0% 37,936 37936.0 0.0
CONCEPT CODES 16 0.0% 4 25.0% 112 500.0 772.2
PUBLICATION TYPE 55 0.2% 12 21.8% 7 25.6 61.1
DATE 179 0.5% 20 11.2% 5 82.7 310.9
LANGUAGE 59 0.2% 14 23.7% 17 90.7 180.4
ADDED 600 1.7% 407 67.8% 5 11.1 20.4
AUTHOR AFFIL. 149 0.4% 61 40.9% 10 101.1 355.4
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 3 0.0% 2 66.7% 1,337 1337.0 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 4 0.0% 1 25.0% 52 87.0 103.1
AT 243 0.7% 54 22.2% 16 572.8 3199.7
Other indexes 5,427 15.1% 1,176 21.7% 16 1346.1 17135.2
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 7,508 29.0% 1,968 26.2% 7 420.1 3444.7
Single 18,357 71.0% 3,071 16.7% 19 1529.4 19801.6
PRESENT commands, by type:
MARC 50.9%
OPAC 30.9%
SBImm/dd srv.bio MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS (weekly)