MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS
Time period: 02/24/01 through 03/02/01
1.0 SUMMARY STATISTICS
_______________________
Relative use of BIOSIS databases:
Number of
Searches Records Presented
________ _________________
BIOSIS 20,952 576,291
BIO88 4,433 64,389
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 682 11,688
2-4 a.m. 309 4,101
4-6 a.m. 132 1,688
6-8 a.m. 342 11,793
8-10 a.m. 1,644 40,001
10-12 a.m. 4,046 93,057
12-2 p.m. 4,380 112,395
2-4 p.m. 4,549 129,034
4-6 p.m. 4,171 91,515
6-8 p.m. 2,316 65,287
8-10 p.m. 1,598 45,732
10-12 p.m. 1,216 34,389
__________ _____________ _________________
Total: 25,385 640,680
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 476
Davis 731
Irvine 25
Los Angeles 82
Riverside 58
San Diego 228
San Francisco 17
Santa Barbara 243
Santa Cruz 63
Lawrence Berkeley 22
Lawrence Livermore 1
Los Alamos 0
MELWEB 20,223
Searchlight 2,843
Other - UC 70
Other-Network UC 303
_____
25,385
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 6,650
Davis 13,283
Irvine 270
Los Angeles 1,446
Riverside 1,128
San Diego 4,190
San Francisco 969
Santa Barbara 2,315
Santa Cruz 1,118
Lawrence Berkeley 258
Lawrence Livermore 249
Los Alamos 0
MELWEB 591,121
Searchlight 12,144
Other - UC 839
Other-Network UC 4,700
_____
640,680
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 9.9
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.2
Standard deviation in seconds 0.6
2.0 BIOSIS Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 21:31
Average session length (minutes:seconds) 20:18
Longest session recorded (minutes:seconds) 194:48
Average number of searches completed per session 0.0
Retrievals per search - median 7.0
Retrievals per search - average 603.3
Retrievals per search - standard deviation 6451.1
Percent of searches completed with 0 results 21.5%
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 25,385 13.6%
PRESENT 150,134 80.6%
INIT or CLOSE 10,002 5.4%
OTHER 799 0.4%
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 7,060 20.0% 1,448 20.5% 9 80.2 465.3
TITLE WORD 3,040 8.6% 936 30.8% 3 375.7 3579.7
EXACT TITLE 342 1.0% 199 58.2% 1 16.4 122.7
KEYWORD 16,195 45.9% 3,192 19.7% 20 782.4 6716.1
JOURNAL 1,308 3.7% 527 40.3% 5 2721.7 16267.1
EXACT JOURNAL 303 0.9% 151 49.8% 11 1156.0 4049.7
SOURCE 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 4 0.0% 4 100% 0 0.0 0.0
BIOSYS NAMES 25 0.1% 19 76.0% 41 191.2 263.0
BIOSYS CODES 0 0.0% 0 0.0% 0 0.0 0.0
SUPERTAXA 63 0.2% 5 7.9% 35 131.2 232.8
MAJ CONCEPT CDES 5 0.0% 1 20.0% 14,713 11205.0 7016.0
CONCEPT CODES 13 0.0% 0 0.0% 8 127.1 304.2
PUBLICATION TYPE 71 0.2% 15 21.1% 18 240.4 460.2
DATE 120 0.3% 22 18.3% 8 185.8 506.1
LANGUAGE 85 0.2% 15 17.6% 18 122.8 272.0
ADDED 572 1.6% 397 69.4% 4 8.3 14.0
AUTHOR AFFIL. 133 0.4% 54 40.6% 10 16.1 20.0
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 4 0.0% 3 75.0% 8 8.0 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 6 0.0% 1 16.7% 13 110.4 208.3
AT 394 1.1% 78 19.8% 12 597.4 7295.3
Other indexes 5,571 15.8% 1,286 23.1% 23 1013.1 8586.1
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 7,229 28.5% 2,000 27.7% 9 436.6 4284.6
Single 18,156 71.5% 3,456 19.0% 19 886.4 8069.4
PRESENT commands, by type:
MARC 51.9%
OPAC 28.8%
SBImm/dd srv.bio MELSRV BIOSIS DATABASES Z39.50 SERVER STATISTICS (weekly)