MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS
Time period: 04/28/01 through 05/04/01
1.0 SUMMARY STATISTICS
_______________________
Relative use of BIOSIS databases:
Number of
Searches Records Presented
________ _________________
BIOSIS 17,473 470,410
BIO88 3,530 57,542
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 844 12,101
2-4 a.m. 536 5,081
4-6 a.m. 129 2,367
6-8 a.m. 453 8,316
8-10 a.m. 1,486 30,537
10-12 a.m. 2,972 75,520
12-2 p.m. 3,457 91,574
2-4 p.m. 3,932 101,734
4-6 p.m. 3,228 93,092
6-8 p.m. 1,670 42,731
8-10 p.m. 1,368 40,734
10-12 p.m. 928 24,165
__________ _____________ _________________
Total: 21,003 527,952
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 406
Davis 530
Irvine 18
Los Angeles 43
Riverside 120
San Diego 87
San Francisco 7
Santa Barbara 306
Santa Cruz 25
Lawrence Berkeley 14
Lawrence Livermore 0
Los Alamos 0
MELWEB 15,574
Searchlight 3,466
Other - UC 43
Other-Network UC 364
_____
21,003
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 5,145
Davis 11,563
Irvine 366
Los Angeles 1,173
Riverside 3,655
San Diego 775
San Francisco 7
Santa Barbara 4,541
Santa Cruz 477
Lawrence Berkeley 53
Lawrence Livermore 0
Los Alamos 0
MELWEB 478,263
Searchlight 9,718
Other - UC 294
Other-Network UC 11,922
_____
527,952
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 2.0
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) 21:14
Average session length (minutes:seconds) 19:26
Longest session recorded (minutes:seconds) 208:42
Average number of searches completed per session 0.0
Retrievals per search - median 7.0
Retrievals per search - average 895.4
Retrievals per search - standard deviation 10446
Percent of searches completed with 0 results 21.5%
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 21,003 12.8%
PRESENT 134,443 81.7%
INIT or CLOSE 8,779 5.3%
OTHER 338 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 5,616 19.4% 952 16.9% 10 96.1 847.5
TITLE WORD 2,922 10.1% 1,185 40.6% 4 226.2 2688.3
EXACT TITLE 263 0.9% 129 49.0% 1 12.8 83.3
KEYWORD 12,902 44.5% 2,378 18.4% 20 1271.2 12497.5
JOURNAL 1,165 4.0% 419 36.0% 5 3014.0 18626.5
EXACT JOURNAL 329 1.1% 148 45.0% 259 1551.9 3597.0
SOURCE 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 3 0.0% 3 100% 0 0.0 0.0
BIOSYS NAMES 27 0.1% 9 33.3% 21 890.6 2497.7
BIOSYS CODES 0 0.0% 0 0.0% 0 0.0 0.0
SUPERTAXA 55 0.2% 4 7.3% 18 294.9 1078.4
MAJ CONCEPT CDES 1 0.0% 0 0.0% 72,394 72394.0 0.0
CONCEPT CODES 21 0.1% 0 0.0% 29 18565.1 84675.9
PUBLICATION TYPE 40 0.1% 5 12.5% 15 102.9 204.0
DATE 90 0.3% 11 12.2% 4 188.9 680.5
LANGUAGE 50 0.2% 12 24.0% 29 417.2 1477.3
ADDED 1,088 3.7% 873 80.2% 3 8.3 14.2
AUTHOR AFFIL. 100 0.3% 41 41.0% 14 505.2 2536.8
ACCESSION NO. 2 0.0% 2 100% 0 0.0 0.0
ISSN 9 0.0% 2 22.2% 2 96.0 240.5
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 2 0.0% 1 50.0% 3 3.0 0.0
AT 231 0.8% 44 19.0% 11 978.0 8501.8
Other indexes 4,099 14.1% 890 21.7% 24 1840.9 11903.8
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 6,185 29.4% 2,005 32.4% 8 805.4 7108.8
Single 14,818 70.6% 2,516 17.0% 20 1255.0 12988.6
PRESENT commands, by type:
MARC 55.9%
OPAC 27.4%
SBImm/dd srv.bio MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS (weekly)