MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS
Time period: 02/03/01 through 02/09/01
1.0 SUMMARY STATISTICS
_______________________
Relative use of BIOSIS databases:
Number of
Searches Records Presented
________ _________________
BIOSIS 16,986 466,032
BIO88 3,659 62,258
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 392 9,267
2-4 a.m. 288 2,148
4-6 a.m. 170 4,464
6-8 a.m. 317 9,295
8-10 a.m. 1,454 35,356
10-12 a.m. 3,331 86,522
12-2 p.m. 3,558 103,734
2-4 p.m. 3,907 98,325
4-6 p.m. 3,315 86,119
6-8 p.m. 1,846 43,474
8-10 p.m. 1,198 28,741
10-12 p.m. 869 20,845
__________ _____________ _________________
Total: 20,645 528,290
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 395
Davis 564
Irvine 31
Los Angeles 106
Riverside 48
San Diego 14
San Francisco 37
Santa Barbara 61
Santa Cruz 5
Lawrence Berkeley 0
Lawrence Livermore 9
Los Alamos 0
MELWEB 16,006
Searchlight 2,847
Other - UC 87
Other-Network UC 435
_____
20,645
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 7,263
Davis 14,688
Irvine 103
Los Angeles 1,928
Riverside 2,705
San Diego 70
San Francisco 801
Santa Barbara 859
Santa Cruz 50
Lawrence Berkeley 0
Lawrence Livermore 7
Los Alamos 0
MELWEB 489,200
Searchlight 5,709
Other - UC 766
Other-Network UC 4,141
_____
528,290
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 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 0.5
2.0 BIOSIS Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 21:20
Average session length (minutes:seconds) 19:38
Longest session recorded (minutes:seconds) 175:35
Average number of searches completed per session 0.0
Retrievals per search - median 8.0
Retrievals per search - average 872.8
Retrievals per search - standard deviation 8069.1
Percent of searches completed with 0 results 20.2%
Percent of searches entered that are long 0.3%
Percent of long searches completed
(includes partial results) 100%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
SEARCH 20,645 13.0%
PRESENT 129,525 81.3%
INIT or CLOSE 8,519 5.4%
OTHER 530 0.3%
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 6,075 21.2% 1,268 20.9% 10 112.4 1007.0
TITLE WORD 2,808 9.8% 864 30.8% 2 249.7 2975.6
EXACT TITLE 252 0.9% 153 60.7% 1 15.4 71.0
KEYWORD 12,443 43.4% 2,176 17.5% 21 1362.0 10197.2
JOURNAL 1,248 4.4% 467 37.4% 9 1772.9 8952.1
EXACT JOURNAL 272 0.9% 128 47.1% 11 1816.7 7781.2
SOURCE 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 5 0.0% 3 60.0% 29 28.5 36.1
BIOSYS NAMES 11 0.0% 8 72.7% 31 50.3 61.3
BIOSYS CODES 0 0.0% 0 0.0% 0 0.0 0.0
SUPERTAXA 41 0.1% 7 17.1% 13 88.3 220.3
MAJ CONCEPT CDES 1 0.0% 0 0.0% 88,007 88007.0 0.0
CONCEPT CODES 1 0.0% 0 0.0% 19 19.0 0.0
PUBLICATION TYPE 74 0.3% 22 29.7% 9 113.3 376.5
DATE 92 0.3% 21 22.8% 6 165.5 672.3
LANGUAGE 34 0.1% 5 14.7% 14 334.8 1115.1
ADDED 570 2.0% 385 67.5% 3 7.9 11.7
AUTHOR AFFIL. 85 0.3% 16 18.8% 10 101.0 488.7
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 1 0.0% 0 0.0% 2 2.0 0.0
AT 363 1.3% 76 20.9% 5 133.6 776.8
Other indexes 4,275 14.9% 921 21.5% 21 1410.1 10786.2
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 5,973 28.9% 1,670 28.0% 7 499.4 5174.4
Single 14,672 71.1% 2,507 17.1% 21 1304.5 10026.7
PRESENT commands, by type:
MARC 54.4%
OPAC 28.5%
SBImm/dd srv.bio MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS (weekly)