MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS
Time period: 02/01/02 through 02/28/02
1.0 SUMMARY STATISTICS
_______________________
Relative use of INSPEC databases:
Number of
Searches Records Presented
________ _________________
INS (current) 44,931 1,592,830
INS90 15,890 117,537
INS85 13,743 66,812
INS80 12,826 47,476
INS69 13,411 76,367
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 2,708 49,258
2-4 a.m. 1,091 28,599
4-6 a.m. 667 18,555
6-8 a.m. 1,067 23,186
8-10 a.m. 5,546 102,057
10-12 a.m. 15,553 272,955
12-2 p.m. 15,230 292,236
2-4 p.m. 20,831 354,521
4-6 p.m. 17,525 362,415
6-8 p.m. 9,117 193,260
8-10 p.m. 6,308 108,322
10-12 p.m. 5,158 95,658
__________ _____________ _________________
Total: 100,801 1,901,022
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 208
Davis 160
Irvine 84
Los Angeles 375
Riverside 141
San Diego 172
San Francisco 55
Santa Barbara 260
Santa Cruz 56
Lawrence Berkeley 97
Lawrence Livermore 209
Los Alamos 0
MELWEB 83,257
Searchlight 14,651
Other - UC 743
Other-Network UC 333
_____
100,801
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 2,631
Davis 6,596
Irvine 1,492
Los Angeles 3,252
Riverside 2,999
San Diego 3,212
San Francisco 710
Santa Barbara 4,339
Santa Cruz 409
Lawrence Berkeley 870
Lawrence Livermore 5,545
Los Alamos 0
MELWEB 1,853,129
Searchlight 8,404
Other - UC 2,219
Other-Network UC 5,215
_____
1,901,022
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 15.6
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) 21:09
Average session length (minutes:seconds) 18:20
Longest session recorded (minutes:seconds) 236:29
Average number of searches completed per session 0.0
Retrievals per search - median 2.0
Retrievals per search - average 433.1
Retrievals per search - standard deviation 6084.5
Percent of searches completed with 0 results 34.8%
Percent of searches entered that are long 0.6%
Percent of long searches completed
(includes partial results) 100%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
SEARCH 100,801 20.3%
PRESENT 342,090 68.8%
INIT or CLOSE 53,195 10.7%
OTHER 1,036 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 30,391 24.8% 9,142 30.1% 10 70.2 1229.3
TITLE WORD 22,221 18.2% 9,326 42.0% 4 138.7 3362.4
EXACT TITLE 1,292 1.1% 733 56.7% 1 28.2 372.6
JOURNAL 4,542 3.7% 2,283 50.3% 7 1866.1 9441.0
EXACT JOURNAL 1,135 0.9% 488 43.0% 440 3797.7 11187.1
SUBJECT 3,952 3.2% 1,841 46.6% 8 334.0 2185.6
EXACT SUBJECT 756 0.6% 173 22.9% 12 530.0 2503.8
THESAURUS 36 0.0% 17 47.2% 14,707 23324.7 25769.9
EXACT THESAURUS 171 0.1% 19 11.1% 35 1035.1 2226.9
KEYWORD 47,287 38.7% 16,100 34.0% 16 1032.5 10158.0
SUBFILE 132 0.1% 25 18.9% 20 143.5 350.8
FORM 1,238 1.0% 345 27.9% 17 326.3 2678.4
DATE 860 0.7% 193 22.4% 12 103.5 366.7
ADDED 342 0.3% 177 51.8% 3 9.5 15.5
ARTICLE 90 0.1% 17 18.9% 36 392.3 868.1
AUTHOR AFFIL. 1,220 1.0% 590 48.4% 10 511.0 6033.1
CONFERENCE 230 0.2% 116 50.4% 25 677.6 1711.0
LANGUAGE 2,722 2.2% 730 26.8% 21 505.2 2487.4
CHEMICAL NAME 561 0.5% 307 54.7% 9 52.8 133.0
ISSN 31 0.0% 24 77.4% 1,006 1267.4 1444.1
ISBN 44 0.0% 39 88.6% 49 46.2 42.1
ID NUMBER 9 0.0% 8 88.9% 1 1.0 0.0
PRODUCT NUMBER 6 0.0% 6 100% 0 0.0 0.0
STANDARD NUMBER 6 0.0% 6 100% 0 0.0 0.0
ISN 0 0.0% 0 0.0% 0 0.0 0.0
AT 3,026 2.5% 1,064 35.2% 14 727.0 5123.9
Other indexes 12 0.0% 8 66.7% 3 3.5 3.1
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 18,369 18.2% 7,566 41.2% 6 270.3 3101.6
Single 82,432 81.8% 27,510 33.4% 13 741.7 8113.8
PRESENT commands, by type:
MARC 38.8%
OPAC 33.5%
SINmm/dd srv.ins MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS (weekly)