MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS
Time period: 03/01/00 through 03/31/00
1.0 SUMMARY STATISTICS
_______________________
Relative use of INSPEC databases:
Number of
Searches Records Presented
________ _________________
INS (current) 45,894 1,869,385
INS90 13,476 180,522
INS85 9,784 87,703
INS80 8,491 50,562
INS69 8,662 75,745
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 2,586 52,239
2-4 a.m. 1,232 22,013
4-6 a.m. 443 10,465
6-8 a.m. 1,002 20,962
8-10 a.m. 4,889 114,899
10-12 a.m. 12,765 339,580
12-2 p.m. 13,319 368,570
2-4 p.m. 17,487 445,467
4-6 p.m. 14,971 424,212
6-8 p.m. 7,961 226,085
8-10 p.m. 5,356 129,876
10-12 p.m. 4,296 109,549
__________ _____________ _________________
Total: 86,307 2,263,917
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 536
Davis 33
Irvine 42
Los Angeles 124
Riverside 7
San Diego 1,534
San Francisco 48
Santa Barbara 236
Santa Cruz 10
Lawrence Berkeley 536
Lawrence Livermore 140
Los Alamos 0
MELWEB 81,785
Searchlight 841
Other - UC 112
Other-Network UC 323
_____
86,307
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 14,205
Davis 248
Irvine 175
Los Angeles 1,472
Riverside 2,847
San Diego 1,925
San Francisco 102
Santa Barbara 5,766
Santa Cruz 251
Lawrence Berkeley 6,246
Lawrence Livermore 3,437
Los Alamos 0
MELWEB 2,203,691
Searchlight 15,933
Other - UC 5
Other-Network UC 7,614
_____
2,263,917
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 2.0
Standard deviation in seconds 8.4
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.3
Standard deviation in seconds 0.9
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 22:21
Average session length (minutes:seconds) 23:08
Longest session recorded (minutes:seconds) 262:55
Average number of searches completed per session 0.0
Retrievals per search - median 3.0
Retrievals per search - average 413.4
Retrievals per search - standard deviation 4874.1
Percent of searches completed with 0 results 29.2%
Percent of searches entered that are long 0.8%
Percent of long searches completed
(includes partial results) 100%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
SEARCH 86,307 16.5%
PRESENT 396,730 76.1%
INIT or CLOSE 37,316 7.2%
OTHER 1,307 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 32,754 29.6% 9,479 28.9% 8 58.1 904.1
TITLE WORD 21,189 19.1% 7,649 36.1% 3 106.8 2438.7
EXACT TITLE 1,644 1.5% 721 43.9% 1 18.5 309.3
JOURNAL 5,115 4.6% 2,378 46.5% 8 2034.8 13394.8
EXACT JOURNAL 1,590 1.4% 667 41.9% 189 2292.1 7088.9
SUBJECT 4,455 4.0% 1,856 41.7% 13 458.2 2919.4
EXACT SUBJECT 909 0.8% 170 18.7% 6 467.6 1738.3
THESAURUS 32 0.0% 12 37.5% 71 915.2 1380.8
EXACT THESAURUS 272 0.2% 43 15.8% 51 851.9 1965.0
KEYWORD 29,621 26.7% 6,880 23.2% 22 1044.2 7781.9
SUBFILE 161 0.1% 40 24.8% 56 253.8 631.4
FORM 952 0.9% 263 27.6% 19 167.9 457.2
DATE 1,230 1.1% 269 21.9% 8 92.5 499.7
ADDED 529 0.5% 343 64.8% 3 13.2 22.4
ARTICLE 112 0.1% 27 24.1% 29 218.7 434.5
AUTHOR AFFIL. 1,223 1.1% 591 48.3% 9 54.5 287.9
CONFERENCE 322 0.3% 124 38.5% 31 744.7 4413.2
LANGUAGE 3,340 3.0% 829 24.8% 29 705.9 4382.7
CHEMICAL NAME 615 0.6% 323 52.5% 12 133.6 434.6
ISSN 62 0.1% 23 37.1% 6 591.1 1675.5
ISBN 10 0.0% 10 100% 0 0.0 0.0
ID NUMBER 7 0.0% 7 100% 0 0.0 0.0
PRODUCT NUMBER 3 0.0% 3 100% 0 0.0 0.0
STANDARD NUMBER 61 0.1% 52 85.2% 1 1.4 0.5
ISN 0 0.0% 0 0.0% 0 0.0 0.0
AT 4,565 4.1% 1,387 30.4% 17 620.5 4478.6
Other indexes 7 0.0% 4 57.1% 1,056 6511.7 10376.6
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 20,229 23.4% 7,413 36.6% 6 275.8 2885.7
Single 66,078 76.6% 17,794 26.9% 13 665.8 6332.2
PRESENT commands, by type:
MARC 38.1%
OPAC 36.5%
SINmm/dd srv.ins MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS (weekly)