MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS
Time period: 01/20/01 through 01/26/01
1.0 SUMMARY STATISTICS
_______________________
Relative use of BIOSIS databases:
Number of
Searches Records Presented
________ _________________
BIOSIS 15,574 442,376
BIO88 3,213 62,399
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 330 5,679
2-4 a.m. 298 2,655
4-6 a.m. 92 998
6-8 a.m. 292 6,560
8-10 a.m. 1,133 34,492
10-12 a.m. 3,090 83,609
12-2 p.m. 3,119 74,592
2-4 p.m. 4,054 116,507
4-6 p.m. 3,015 77,812
6-8 p.m. 1,610 43,795
8-10 p.m. 1,178 36,264
10-12 p.m. 576 21,812
__________ _____________ _________________
Total: 18,787 504,775
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 729
Davis 434
Irvine 15
Los Angeles 86
Riverside 198
San Diego 95
San Francisco 30
Santa Barbara 96
Santa Cruz 46
Lawrence Berkeley 16
Lawrence Livermore 5
Los Alamos 0
MELWEB 13,904
Searchlight 2,693
Other - UC 36
Other-Network UC 404
_____
18,787
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 6,856
Davis 11,577
Irvine 34
Los Angeles 1,526
Riverside 7,966
San Diego 1,126
San Francisco 533
Santa Barbara 1,068
Santa Cruz 1,429
Lawrence Berkeley 34
Lawrence Livermore 156
Los Alamos 0
MELWEB 449,078
Searchlight 5,936
Other - UC 831
Other-Network UC 16,625
_____
504,775
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 1.8
Standard deviation in seconds 7.0
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) 21:05
Average session length (minutes:seconds) 19:06
Longest session recorded (minutes:seconds) 188:33
Average number of searches completed per session 0.0
Retrievals per search - median 8.0
Retrievals per search - average 950.5
Retrievals per search - standard deviation 22194
Percent of searches completed with 0 results 20.0%
Percent of searches entered that are long 0.4%
Percent of long searches completed
(includes partial results) 100%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
SEARCH 18,787 11.7%
PRESENT 133,752 83.3%
INIT or CLOSE 7,837 4.9%
OTHER 144 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 5,472 20.0% 1,059 19.4% 10 111.0 1029.1
TITLE WORD 2,696 9.8% 710 26.3% 3 244.6 2569.3
EXACT TITLE 164 0.6% 108 65.9% 1 30.4 126.6
KEYWORD 11,158 40.8% 2,028 18.2% 27 1609.7 31417.2
JOURNAL 1,183 4.3% 453 38.3% 6 1944.7 12599.8
EXACT JOURNAL 269 1.0% 123 45.7% 15 1589.5 4454.6
SOURCE 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 4 0.0% 2 50.0% 3 3.0 2.8
BIOSYS NAMES 18 0.1% 11 61.1% 17 487.4 809.9
BIOSYS CODES 2 0.0% 0 0.0% 109 109.0 149.9
SUPERTAXA 39 0.1% 1 2.6% 104 507.0 747.2
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 8 0.0% 0 0.0% 95 1224.3 2150.2
PUBLICATION TYPE 50 0.2% 9 18.0% 31 569.0 1242.9
DATE 72 0.3% 12 16.7% 3 67.2 213.5
LANGUAGE 60 0.2% 15 25.0% 153 972.8 1935.6
ADDED 517 1.9% 354 68.5% 4 9.1 15.8
AUTHOR AFFIL. 76 0.3% 16 21.1% 8 61.8 268.2
ACCESSION NO. 1 0.0% 0 0.0% 1 1.0 0.0
ISSN 3 0.0% 3 100% 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 11 0.0% 1 9.1% 1,537 2181.0 1759.8
AT 331 1.2% 87 26.3% 8 501.8 3287.4
Other indexes 5,241 19.1% 1,249 23.8% 30 1055.1 7062.0
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 5,717 30.4% 1,586 27.7% 11 593.4 4587.7
Single 13,070 69.6% 2,167 16.6% 21 1413.1 28986.3
PRESENT commands, by type:
MARC 59.1%
OPAC 28.3%
SBImm/dd srv.bio MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS (weekly)