MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS
Time period: 01/27/01 through 02/02/01
1.0 SUMMARY STATISTICS
_______________________
Relative use of BIOSIS databases:
Number of
Searches Records Presented
________ _________________
BIOSIS 16,868 494,329
BIO88 3,524 63,675
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 457 7,865
2-4 a.m. 312 5,082
4-6 a.m. 143 3,721
6-8 a.m. 281 9,250
8-10 a.m. 1,608 36,800
10-12 a.m. 3,125 87,288
12-2 p.m. 3,469 95,621
2-4 p.m. 4,467 130,799
4-6 p.m. 2,936 85,214
6-8 p.m. 1,526 38,244
8-10 p.m. 1,295 36,699
10-12 p.m. 773 21,421
__________ _____________ _________________
Total: 20,392 558,004
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 485
Davis 582
Irvine 25
Los Angeles 112
Riverside 90
San Diego 171
San Francisco 28
Santa Barbara 30
Santa Cruz 16
Lawrence Berkeley 1
Lawrence Livermore 2
Los Alamos 0
MELWEB 15,599
Searchlight 2,798
Other - UC 29
Other-Network UC 424
_____
20,392
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 3,524
Davis 9,509
Irvine 2,181
Los Angeles 1,400
Riverside 1,425
San Diego 1,820
San Francisco 722
Santa Barbara 704
Santa Cruz 791
Lawrence Berkeley 0
Lawrence Livermore 190
Los Alamos 0
MELWEB 506,831
Searchlight 16,440
Other - UC 404
Other-Network UC 12,063
_____
558,004
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 6.3
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.2
Standard deviation in seconds 0.9
2.0 BIOSIS Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 21:23
Average session length (minutes:seconds) 19:47
Longest session recorded (minutes:seconds) 230:03
Average number of searches completed per session 0.0
Retrievals per search - median 8.0
Retrievals per search - average 823.1
Retrievals per search - standard deviation 7426.6
Percent of searches completed with 0 results 19.3%
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 20,392 12.4%
PRESENT 135,875 82.3%
INIT or CLOSE 8,579 5.2%
OTHER 191 0.1%
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 6,098 20.8% 1,132 18.6% 8 128.8 2745.2
TITLE WORD 2,699 9.2% 719 26.6% 3 236.8 2751.3
EXACT TITLE 196 0.7% 121 61.7% 1 100.9 490.0
KEYWORD 12,326 42.0% 2,116 17.2% 23 1070.5 7524.1
JOURNAL 1,204 4.1% 401 33.3% 6 2699.8 14421.2
EXACT JOURNAL 324 1.1% 137 42.3% 175 2651.0 7724.7
SOURCE 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 7 0.0% 6 85.7% 59 59.0 0.0
BIOSYS NAMES 9 0.0% 5 55.6% 26 154.5 270.5
BIOSYS CODES 1 0.0% 1 100% 0 0.0 0.0
SUPERTAXA 38 0.1% 3 7.9% 18 1150.0 6242.7
MAJ CONCEPT CDES 2 0.0% 0 0.0% 95,722 95721.5 69591.3
CONCEPT CODES 9 0.0% 1 11.1% 168 22901.3 44488.0
PUBLICATION TYPE 36 0.1% 4 11.1% 27 238.9 542.8
DATE 105 0.4% 24 22.9% 11 74.2 99.9
LANGUAGE 46 0.2% 7 15.2% 63 354.8 1271.6
ADDED 604 2.1% 357 59.1% 5 16.3 44.0
AUTHOR AFFIL. 119 0.4% 40 33.6% 7 134.7 957.0
ACCESSION NO. 1 0.0% 1 100% 0 0.0 0.0
ISSN 6 0.0% 5 83.3% 95 95.0 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 2 0.0% 0 0.0% 173 172.5 194.5
AT 285 1.0% 67 23.5% 11 300.5 1210.6
Other indexes 5,250 17.9% 964 18.4% 29 1121.5 9606.9
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 6,304 30.9% 1,502 23.8% 9 500.1 5018.6
Single 14,088 69.1% 2,427 17.2% 21 1233.4 9254.3
PRESENT commands, by type:
MARC 52.4%
OPAC 31.8%
SBImm/dd srv.bio MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS (weekly)