MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS
Time period: 01/13/01 through 01/19/01
1.0 SUMMARY STATISTICS
_______________________
Relative use of BIOSIS databases:
Number of
Searches Records Presented
________ _________________
BIOSIS 12,119 362,797
BIO88 2,623 46,914
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 482 6,745
2-4 a.m. 235 2,065
4-6 a.m. 62 1,323
6-8 a.m. 241 9,131
8-10 a.m. 1,128 29,588
10-12 a.m. 2,153 71,180
12-2 p.m. 2,418 62,046
2-4 p.m. 3,062 82,851
4-6 p.m. 2,297 65,644
6-8 p.m. 1,301 43,285
8-10 p.m. 844 21,689
10-12 p.m. 519 14,164
__________ _____________ _________________
Total: 14,742 409,711
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 350
Davis 437
Irvine 2
Los Angeles 192
Riverside 53
San Diego 37
San Francisco 8
Santa Barbara 202
Santa Cruz 50
Lawrence Berkeley 18
Lawrence Livermore 0
Los Alamos 0
MELWEB 11,110
Searchlight 1,979
Other - UC 45
Other-Network UC 259
_____
14,742
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 3,693
Davis 11,873
Irvine 2
Los Angeles 1,912
Riverside 721
San Diego 423
San Francisco 510
Santa Barbara 1,244
Santa Cruz 548
Lawrence Berkeley 203
Lawrence Livermore 0
Los Alamos 0
MELWEB 374,782
Searchlight 10,596
Other - UC 294
Other-Network UC 2,910
_____
409,711
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 6.0
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.2
Standard deviation in seconds 0.5
2.0 BIOSIS Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 21:21
Average session length (minutes:seconds) 19:50
Longest session recorded (minutes:seconds) 185:11
Average number of searches completed per session 0.0
Retrievals per search - median 7.0
Retrievals per search - average 634.1
Retrievals per search - standard deviation 6671.9
Percent of searches completed with 0 results 19.1%
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 14,742 12.3%
PRESENT 98,828 82.4%
INIT or CLOSE 6,151 5.1%
OTHER 275 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 4,758 23.2% 758 15.9% 9 109.2 1305.9
TITLE WORD 1,984 9.7% 487 24.5% 3 197.9 1385.8
EXACT TITLE 156 0.8% 77 49.4% 1 9.9 36.4
KEYWORD 8,478 41.3% 1,582 18.7% 22 1021.7 8577.3
JOURNAL 934 4.5% 316 33.8% 6 1561.4 9532.4
EXACT JOURNAL 165 0.8% 72 43.6% 35 1054.4 2636.3
SOURCE 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 8 0.0% 8 100% 0 0.0 0.0
BIOSYS NAMES 21 0.1% 14 66.7% 39 156.6 258.2
BIOSYS CODES 0 0.0% 0 0.0% 0 0.0 0.0
SUPERTAXA 21 0.1% 1 4.8% 93 8220.8 23722.3
MAJ CONCEPT CDES 5 0.0% 0 0.0% 13,568 36868.6 60864.0
CONCEPT CODES 12 0.1% 1 8.3% 166 519.1 1180.0
PUBLICATION TYPE 27 0.1% 1 3.7% 40 235.8 787.5
DATE 118 0.6% 26 22.0% 3 22.1 98.9
LANGUAGE 15 0.1% 2 13.3% 50 12348.0 28938.4
ADDED 556 2.7% 370 66.5% 4 9.8 17.8
AUTHOR AFFIL. 71 0.3% 13 18.3% 10 23.5 36.5
ACCESSION NO. 0 0.0% 0 0.0% 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 0 0.0% 0 0.0% 0 0.0 0.0
AT 201 1.0% 41 20.4% 6 1085.2 8635.1
Other indexes 3,013 14.7% 620 20.6% 17 1007.1 8675.8
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 4,497 30.5% 1,168 26.0% 7 458.6 4872.1
Single 10,245 69.5% 1,649 16.1% 20 909.9 8181.3
PRESENT commands, by type:
MARC 51.7%
OPAC 33.3%
SBImm/dd srv.bio MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS (weekly)