MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS
Time period: 01/01/02 through 01/31/02
1.0 SUMMARY STATISTICS
_______________________
Relative use of INSPEC databases:
Number of
Searches Records Presented
________ _________________
INS (current) 43,071 1,528,337
INS90 13,990 110,234
INS85 11,555 53,794
INS80 10,719 37,962
INS69 10,439 66,451
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 2,174 36,761
2-4 a.m. 712 14,445
4-6 a.m. 515 13,420
6-8 a.m. 846 20,075
8-10 a.m. 5,638 111,084
10-12 a.m. 14,344 285,429
12-2 p.m. 14,261 293,315
2-4 p.m. 18,905 378,492
4-6 p.m. 15,037 322,567
6-8 p.m. 7,610 148,347
8-10 p.m. 5,265 92,975
10-12 p.m. 4,467 79,868
__________ _____________ _________________
Total: 89,774 1,796,778
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 185
Davis 269
Irvine 286
Los Angeles 202
Riverside 400
San Diego 567
San Francisco 34
Santa Barbara 384
Santa Cruz 22
Lawrence Berkeley 221
Lawrence Livermore 166
Los Alamos 0
MELWEB 75,664
Searchlight 10,791
Other - UC 280
Other-Network UC 303
_____
89,774
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 2,654
Davis 4,701
Irvine 2,658
Los Angeles 845
Riverside 11,385
San Diego 3,329
San Francisco 293
Santa Barbara 5,810
Santa Cruz 388
Lawrence Berkeley 2,283
Lawrence Livermore 2,241
Los Alamos 0
MELWEB 1,749,057
Searchlight 6,444
Other - UC 624
Other-Network UC 4,066
_____
1,796,778
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 12.2
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.2
Standard deviation in seconds 0.4
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 21:26
Average session length (minutes:seconds) 19:22
Longest session recorded (minutes:seconds) 213:37
Average number of searches completed per session 0.0
Retrievals per search - median 3.0
Retrievals per search - average 428.9
Retrievals per search - standard deviation 6008.0
Percent of searches completed with 0 results 32.9%
Percent of searches entered that are long 0.9%
Percent of long searches completed
(includes partial results) 100%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
SEARCH 89,774 19.5%
PRESENT 322,359 70.2%
INIT or CLOSE 46,517 10.1%
OTHER 773 0.2%
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 31,665 28.7% 9,345 29.5% 10 70.7 638.2
TITLE WORD 19,839 18.0% 7,856 39.6% 4 142.5 3051.6
EXACT TITLE 1,201 1.1% 617 51.4% 1 335.5 4484.9
JOURNAL 4,295 3.9% 1,949 45.4% 7 1731.7 9824.4
EXACT JOURNAL 1,107 1.0% 468 42.3% 571 4914.2 13065.3
SUBJECT 3,919 3.6% 1,878 47.9% 11 391.3 2097.3
EXACT SUBJECT 769 0.7% 200 26.0% 19 369.4 2126.4
THESAURUS 19 0.0% 17 89.5% 386 385.5 536.7
EXACT THESAURUS 163 0.1% 17 10.4% 89 1277.6 3175.1
KEYWORD 37,516 34.0% 11,936 31.8% 16 1055.6 10354.3
SUBFILE 123 0.1% 25 20.3% 47 284.3 712.0
FORM 1,156 1.0% 299 25.9% 19 235.8 964.5
DATE 1,190 1.1% 276 23.2% 10 141.4 709.8
ADDED 385 0.3% 264 68.6% 3 11.8 19.5
ARTICLE 71 0.1% 20 28.2% 13 1551.3 4149.3
AUTHOR AFFIL. 943 0.9% 394 41.8% 11 107.1 650.2
CONFERENCE 156 0.1% 67 42.9% 62 488.0 1103.0
LANGUAGE 2,715 2.5% 685 25.2% 23 622.6 3047.3
CHEMICAL NAME 592 0.5% 322 54.4% 5 452.2 3372.5
ISSN 18 0.0% 14 77.8% 85 535.8 960.7
ISBN 4 0.0% 2 50.0% 43 42.5 9.2
ID NUMBER 2 0.0% 2 100% 0 0.0 0.0
PRODUCT NUMBER 2 0.0% 1 50.0% 42 42.0 0.0
STANDARD NUMBER 1 0.0% 1 100% 0 0.0 0.0
ISN 0 0.0% 0 0.0% 0 0.0 0.0
AT 2,459 2.2% 855 34.8% 14 1011.2 6335.5
Other indexes 13 0.0% 7 53.8% 14 1622.8 2502.9
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 17,325 19.3% 6,868 39.6% 6 304.9 3084.9
Single 72,449 80.7% 22,701 31.3% 13 709.9 7933.9
PRESENT commands, by type:
MARC 38.6%
OPAC 34.8%
SINmm/dd srv.ins MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS (weekly)