MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS
Time period: 08/25/01 through 08/31/01
1.0 SUMMARY STATISTICS
_______________________
Relative use of BIOSIS databases:
Number of
Searches Records Presented
________ _________________
BIOSIS 10,872 259,011
BIO88 2,095 27,889
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 696 6,902
2-4 a.m. 187 1,548
4-6 a.m. 114 906
6-8 a.m. 409 6,850
8-10 a.m. 1,001 22,872
10-12 a.m. 2,140 54,075
12-2 p.m. 2,310 59,738
2-4 p.m. 2,283 50,462
4-6 p.m. 1,686 46,258
6-8 p.m. 1,103 21,014
8-10 p.m. 452 10,061
10-12 p.m. 586 6,214
__________ _____________ _________________
Total: 12,967 286,900
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 170
Davis 702
Irvine 9
Los Angeles 84
Riverside 32
San Diego 117
San Francisco 14
Santa Barbara 68
Santa Cruz 603
Lawrence Berkeley 12
Lawrence Livermore 0
Los Alamos 0
MELWEB 2
Searchlight 836
Other - UC 10,031
Other-Network UC 287
_____
12,967
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 1,907
Davis 10,784
Irvine 154
Los Angeles 1,361
Riverside 548
San Diego 1,667
San Francisco 125
Santa Barbara 589
Santa Cruz 4,447
Lawrence Berkeley 96
Lawrence Livermore 0
Los Alamos 0
MELWEB 88
Searchlight 0
Other - UC 260,729
Other-Network UC 4,405
_____
286,900
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 0.5
2.0 BIOSIS Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 20:59
Average session length (minutes:seconds) 18:34
Longest session recorded (minutes:seconds) 259:37
Average number of searches completed per session 0.0
Retrievals per search - median 5.0
Retrievals per search - average 685.3
Retrievals per search - standard deviation 8262.4
Percent of searches completed with 0 results 24.5%
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 12,967 14.0%
PRESENT 74,477 80.5%
INIT or CLOSE 5,020 5.4%
OTHER 105 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 4,715 26.0% 768 16.3% 8 121.3 1877.0
TITLE WORD 2,415 13.3% 1,145 47.4% 2 128.8 1377.7
EXACT TITLE 112 0.6% 69 61.6% 1 5.4 28.5
KEYWORD 6,751 37.3% 1,382 20.5% 18 1231.2 11966.8
JOURNAL 562 3.1% 162 28.8% 7 2617.2 11151.0
EXACT JOURNAL 194 1.1% 91 46.9% 266 3654.4 9174.9
SOURCE 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 1 0.0% 0 0.0% 4 4.0 0.0
BIOSYS NAMES 11 0.1% 9 81.8% 218 218.0 285.7
BIOSYS CODES 0 0.0% 0 0.0% 0 0.0 0.0
SUPERTAXA 16 0.1% 1 6.3% 93 340.8 833.2
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 0 0.0% 0 0.0% 0 0.0 0.0
PUBLICATION TYPE 24 0.1% 3 12.5% 3 52.0 100.3
DATE 154 0.9% 41 26.6% 4 22.6 68.7
LANGUAGE 22 0.1% 1 4.5% 4 7.6 8.9
ADDED 1,273 7.0% 1,051 82.6% 3 7.4 12.1
AUTHOR AFFIL. 44 0.2% 11 25.0% 14 25.0 29.0
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 0 0.0% 0 0.0% 0 0.0 0.0
AT 74 0.4% 19 25.7% 7 292.8 1192.6
Other indexes 1,740 9.6% 399 22.9% 11 1022.0 7882.9
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 4,293 33.1% 1,650 38.4% 4 315.7 3509.7
Single 8,674 66.9% 1,524 17.6% 20 1126.2 10900.0
PRESENT commands, by type:
MARC 57.5%
OPAC 25.6%
SBImm/dd srv.bio MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS (weekly)