MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS
Time period: 06/02/01 through 06/08/01
1.0 SUMMARY STATISTICS
_______________________
Relative use of BIOSIS databases:
Number of
Searches Records Presented
________ _________________
BIOSIS 16,676 431,542
BIO88 3,117 47,867
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 709 9,172
2-4 a.m. 455 4,413
4-6 a.m. 139 1,633
6-8 a.m. 553 8,832
8-10 a.m. 1,410 31,978
10-12 a.m. 2,852 67,406
12-2 p.m. 3,053 80,548
2-4 p.m. 3,995 106,969
4-6 p.m. 3,000 68,153
6-8 p.m. 1,414 40,116
8-10 p.m. 1,233 31,851
10-12 p.m. 980 28,338
__________ _____________ _________________
Total: 19,793 479,409
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 308
Davis 611
Irvine 7
Los Angeles 68
Riverside 63
San Diego 82
San Francisco 6
Santa Barbara 155
Santa Cruz 20
Lawrence Berkeley 8
Lawrence Livermore 1
Los Alamos 0
MELWEB 15,210
Searchlight 3,041
Other - UC 21
Other-Network UC 192
_____
19,793
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 4,842
Davis 8,000
Irvine 73
Los Angeles 957
Riverside 1,480
San Diego 488
San Francisco 200
Santa Barbara 1,518
Santa Cruz 387
Lawrence Berkeley 89
Lawrence Livermore 22
Los Alamos 0
MELWEB 453,380
Searchlight 5,799
Other - UC 414
Other-Network UC 1,760
_____
479,409
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 1.9
Standard deviation in seconds 7.2
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.2
Standard deviation in seconds 0.4
2.0 BIOSIS Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 21:19
Average session length (minutes:seconds) 19:46
Longest session recorded (minutes:seconds) 159:52
Average number of searches completed per session 0.0
Retrievals per search - median 7.0
Retrievals per search - average 940.0
Retrievals per search - standard deviation 11314
Percent of searches completed with 0 results 21.6%
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 19,793 14.5%
PRESENT 107,901 79.3%
INIT or CLOSE 7,829 5.8%
OTHER 568 0.4%
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 5,143 18.9% 979 19.0% 9 143.3 2634.0
TITLE WORD 2,956 10.9% 1,097 37.1% 3 239.6 1764.2
EXACT TITLE 148 0.5% 82 55.4% 1 9.4 29.5
KEYWORD 12,113 44.5% 2,208 18.2% 21 1435.3 14848.4
JOURNAL 1,320 4.8% 455 34.5% 9 2218.6 12467.6
EXACT JOURNAL 320 1.2% 108 33.7% 390 2250.9 5226.5
SOURCE 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 10 0.0% 9 90.0% 33 33.0 0.0
BIOSYS NAMES 9 0.0% 5 55.6% 3,167 2381.3 1571.5
BIOSYS CODES 0 0.0% 0 0.0% 0 0.0 0.0
SUPERTAXA 49 0.2% 5 10.2% 13 114.6 267.6
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 1 0.0% 0 0.0% 143463 143463 0.0
PUBLICATION TYPE 50 0.2% 8 16.0% 25 534.0 1112.8
DATE 138 0.5% 26 18.8% 8 108.6 419.3
LANGUAGE 69 0.3% 16 23.2% 43 533.9 1015.5
ADDED 1,037 3.8% 888 85.6% 2 6.5 10.6
AUTHOR AFFIL. 102 0.4% 38 37.3% 12 19.4 27.6
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 2 0.0% 2 100% 0 0.0 0.0
ISBN 1 0.0% 1 100% 0 0.0 0.0
ISN 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 2 0.0% 0 0.0% 1,513 1513.0 264.5
AT 209 0.8% 46 22.0% 16 1172.7 9635.1
Other indexes 3,559 13.1% 701 19.7% 29 1369.3 9204.2
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 5,677 28.7% 1,886 33.2% 8 593.6 4815.5
Single 14,116 71.3% 2,384 16.9% 20 1394.1 14418.7
PRESENT commands, by type:
MARC 49.4%
OPAC 36.2%
SBImm/dd srv.bio MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS (weekly)