MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS
Time period: 12/01/99 through 12/31/99
1.0 SUMMARY STATISTICS
_______________________
Relative use of INSPEC databases:
Number of
Searches Records Presented
________ _________________
INS (current) 27,014 1,257,469
INS90 8,835 133,341
INS85 6,497 52,312
INS80 5,574 32,285
INS69 5,621 49,431
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 1,571 40,347
2-4 a.m. 699 22,429
4-6 a.m. 293 15,698
6-8 a.m. 649 31,013
8-10 a.m. 2,526 81,412
10-12 a.m. 7,974 230,160
12-2 p.m. 8,684 230,901
2-4 p.m. 11,900 327,638
4-6 p.m. 9,484 279,697
6-8 p.m. 4,480 117,638
8-10 p.m. 2,855 73,211
10-12 p.m. 2,426 74,694
__________ _____________ _________________
Total: 53,541 1,524,838
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 114
Davis 37
Irvine 86
Los Angeles 109
Riverside 0
San Diego 1,340
San Francisco 24
Santa Barbara 220
Santa Cruz 180
Lawrence Berkeley 437
Lawrence Livermore 49
Los Alamos 0
MELWEB 50,591
Other - UC 88
Other-Network UC 266
_____
53,541
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 8,208
Davis 617
Irvine 550
Los Angeles 1,494
Riverside 0
San Diego 709
San Francisco 54
Santa Barbara 3,447
Santa Cruz 450
Lawrence Berkeley 5,371
Lawrence Livermore 1,248
Los Alamos 0
MELWEB 1,497,138
Other - UC 0
Other-Network UC 5,552
_____
1,524,838
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 16.2
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) 22:35
Average session length (minutes:seconds) 24:01
Longest session recorded (minutes:seconds) 192:17
Average number of searches completed per session 0.0
Retrievals per search - median 4.0
Retrievals per search - average 381.1
Retrievals per search - standard deviation 4547.0
Percent of searches completed with 0 results 29.6%
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 53,541 15.9%
PRESENT 261,540 77.5%
INIT or CLOSE 22,094 6.5%
OTHER 485 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 20,989 30.3% 5,887 28.0% 9 59.6 572.1
TITLE WORD 11,116 16.1% 4,397 39.6% 3 102.8 1643.3
EXACT TITLE 1,156 1.7% 606 52.4% 1 13.6 94.3
JOURNAL 3,187 4.6% 1,544 48.4% 7 1117.9 5501.1
EXACT JOURNAL 825 1.2% 348 42.2% 260 2598.0 6743.8
SUBJECT 3,031 4.4% 1,339 44.2% 9 311.7 1350.0
EXACT SUBJECT 631 0.9% 175 27.7% 6 280.5 1251.4
THESAURUS 22 0.0% 13 59.1% 10 77.6 141.3
EXACT THESAURUS 149 0.2% 26 17.4% 71 1079.6 2769.0
KEYWORD 18,795 27.2% 4,270 22.7% 20 1037.6 8281.4
SUBFILE 149 0.2% 22 14.8% 31 183.7 449.0
FORM 624 0.9% 167 26.8% 17 195.6 883.0
DATE 851 1.2% 156 18.3% 7 120.0 660.9
ADDED 461 0.7% 322 69.8% 3 26.3 126.3
ARTICLE 87 0.1% 19 21.8% 98 474.7 1175.0
AUTHOR AFFIL. 905 1.3% 349 38.6% 8 175.6 959.2
CONFERENCE 210 0.3% 89 42.4% 13 369.3 2600.2
LANGUAGE 2,480 3.6% 660 26.6% 24 946.8 8804.1
CHEMICAL NAME 281 0.4% 127 45.2% 12 200.4 603.3
ISSN 19 0.0% 6 31.6% 2 22.6 69.0
ISBN 14 0.0% 10 71.4% 18 37.5 52.6
ID NUMBER 1 0.0% 1 100% 0 0.0 0.0
PRODUCT NUMBER 2 0.0% 2 100% 0 0.0 0.0
STANDARD NUMBER 15 0.0% 15 100% 0 0.0 0.0
ISN 0 0.0% 0 0.0% 0 0.0 0.0
AT 3,162 4.6% 1,021 32.3% 16 376.1 2128.9
Other indexes 6 0.0% 1 16.7% 40 94.0 152.6
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 12,575 23.5% 4,635 36.9% 7 314.6 4352.4
Single 40,966 76.5% 11,209 27.4% 13 601.8 5658.5
PRESENT commands, by type:
MARC 36.6%
OPAC 38.2%
SINmm/dd srv.ins MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS (weekly)