MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS
Time period: 05/04/02 through 05/10/02
1.0 SUMMARY STATISTICS
_______________________
Relative use of BIOSIS databases:
Number of
Searches Records Presented
________ _________________
BIOSIS 23,453 584,243
BIO88 4,394 60,907
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 1,211 23,884
2-4 a.m. 373 3,935
4-6 a.m. 171 3,973
6-8 a.m. 517 11,582
8-10 a.m. 1,773 39,728
10-12 a.m. 3,839 92,174
12-2 p.m. 4,261 96,127
2-4 p.m. 5,783 134,411
4-6 p.m. 4,221 103,405
6-8 p.m. 2,425 56,613
8-10 p.m. 1,928 46,161
10-12 p.m. 1,345 33,157
__________ _____________ _________________
Total: 27,847 645,150
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 353
Davis 610
Irvine 22
Los Angeles 226
Riverside 109
San Diego 59
San Francisco 2
Santa Barbara 34
Santa Cruz 59
Lawrence Berkeley 1
Lawrence Livermore 3
Los Alamos 0
MELWEB 21,460
Searchlight 4,502
Other - UC 104
Other-Network UC 303
_____
27,847
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 3,752
Davis 9,084
Irvine 157
Los Angeles 6,921
Riverside 3,571
San Diego 755
San Francisco 147
Santa Barbara 671
Santa Cruz 964
Lawrence Berkeley 3
Lawrence Livermore 78
Los Alamos 0
MELWEB 597,543
Searchlight 18,406
Other - UC 347
Other-Network UC 2,751
_____
645,150
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 6.8
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) 21:23
Average session length (minutes:seconds) 19:17
Longest session recorded (minutes:seconds) 256:09
Average number of searches completed per session 0.0
Retrievals per search - median 7.0
Retrievals per search - average 723.2
Retrievals per search - standard deviation 8938.0
Percent of searches completed with 0 results 22.9%
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 27,847 14.7%
PRESENT 149,414 78.8%
INIT or CLOSE 11,278 5.9%
OTHER 1,157 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 6,682 17.9% 1,182 17.7% 9 145.1 1437.7
TITLE WORD 4,280 11.5% 1,571 36.7% 4 324.2 4057.5
EXACT TITLE 221 0.6% 103 46.6% 1 35.3 235.4
KEYWORD 17,833 47.8% 3,681 20.6% 21 1108.2 11613.3
JOURNAL 1,351 3.6% 491 36.3% 5 1990.9 12358.2
EXACT JOURNAL 257 0.7% 107 41.6% 128 1563.9 3664.9
SOURCE 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 7 0.0% 5 71.4% 8 7.5 9.2
BIOSYS NAMES 12 0.0% 6 50.0% 48 239.3 483.2
BIOSYS CODES 1 0.0% 0 0.0% 52 52.0 0.0
SUPERTAXA 50 0.1% 7 14.0% 24 157.3 347.7
MAJ CONCEPT CDES 2 0.0% 0 0.0% 31,815 31814.5 44911.9
CONCEPT CODES 2 0.0% 0 0.0% 75 74.5 9.2
PUBLICATION TYPE 65 0.2% 13 20.0% 19 170.0 391.3
DATE 118 0.3% 19 16.1% 5 158.1 490.4
LANGUAGE 68 0.2% 12 17.6% 79 423.9 1329.8
ADDED 1,139 3.1% 855 75.1% 8 13.3 17.0
AUTHOR AFFIL. 148 0.4% 51 34.5% 10 76.9 306.9
ACCESSION NO. 2 0.0% 2 100% 0 0.0 0.0
ISSN 1 0.0% 0 0.0% 51 51.0 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 20 0.1% 5 25.0% 34 394.7 698.9
AT 232 0.6% 69 29.7% 18 463.3 1678.6
Other indexes 4,848 13.0% 883 18.2% 22 1054.3 7619.4
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 7,305 26.2% 2,143 29.3% 8 490.3 4409.8
Single 20,542 73.8% 4,224 20.6% 20 1079.1 11394.6
PRESENT commands, by type:
MARC 48.3%
OPAC 33.8%
SBImm/dd srv.bio MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS (weekly)