MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS
Time period: 06/01/99 through 06/30/99
1.0 SUMMARY STATISTICS
_______________________
Relative use of INSPEC databases:
Number of
Searches Records Presented
________ _________________
INS (current) 165,613 1,652,186
INS90 6,674 123,517
INS85 4,313 70,752
INS80 2,791 36,904
INS69 2,846 57,581
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 1,135 30,736
2-4 a.m. 757 58,229
4-6 a.m. 239 5,497
6-8 a.m. 561 13,933
8-10 a.m. 3,696 109,091
10-12 a.m. 8,380 288,868
12-2 p.m. 7,863 276,461
2-4 p.m. 10,722 404,699
4-6 p.m. 8,645 313,401
6-8 p.m. 65,868 207,521
8-10 p.m. 20,104 99,382
10-12 p.m. 54,267 133,122
__________ _____________ _________________
Total: 182,237 1,940,940
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 131,398
Davis 26
Irvine 40
Los Angeles 191
Riverside 34
San Diego 1,548
San Francisco 7
Santa Barbara 232
Santa Cruz 310
Lawrence Berkeley 106
Lawrence Livermore 98
Los Alamos 0
MELWEB 47,106
Other - UC 846
Other-Network UC 295
_____
182,237
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 128,931
Davis 346
Irvine 50
Los Angeles 3,936
Riverside 2,451
San Diego 2,634
San Francisco 17
Santa Barbara 3,441
Santa Cruz 104
Lawrence Berkeley 1,799
Lawrence Livermore 1,313
Los Alamos 0
MELWEB 1,774,934
Other - UC 10,674
Other-Network UC 10,310
_____
1,940,940
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 9.1
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) 23:23
Average session length (minutes:seconds) 25:36
Longest session recorded (minutes:seconds) 215:55
Average number of searches completed per session 0.0
Retrievals per search - median 1.0
Retrievals per search - average 138.7
Retrievals per search - standard deviation 3126.7
Percent of searches completed with 0 results 10.8%
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 182,237 34.7%
PRESENT 326,773 62.3%
INIT or CLOSE 14,647 2.8%
OTHER 777 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 21,459 10.9% 5,503 25.6% 10 110.8 2367.3
TITLE WORD 10,124 5.1% 3,240 32.0% 4 146.8 1757.3
EXACT TITLE 946 0.5% 499 52.7% 1 27.7 198.2
JOURNAL 3,222 1.6% 1,451 45.0% 6 1199.7 6622.3
EXACT JOURNAL 1,108 0.6% 524 47.3% 278 2779.6 6973.0
SUBJECT 2,624 1.3% 891 34.0% 13 256.5 1080.7
EXACT SUBJECT 641 0.3% 125 19.5% 4 467.3 1821.1
THESAURUS 49 0.0% 29 59.2% 249 7732.0 18567.4
EXACT THESAURUS 232 0.1% 35 15.1% 30 1030.4 2743.8
KEYWORD 17,326 8.8% 3,327 19.2% 28 1282.6 10496.7
SUBFILE 128 0.1% 38 29.7% 20 311.0 749.3
FORM 721 0.4% 177 24.5% 22 305.0 1605.2
DATE 813 0.4% 223 27.4% 15 232.7 1129.7
ADDED 314 0.2% 238 75.8% 4 176.0 902.2
ARTICLE 120 0.1% 32 26.7% 25 330.8 844.5
AUTHOR AFFIL. 865 0.4% 436 50.4% 9 34.0 123.1
CONFERENCE 224 0.1% 99 44.2% 16 412.2 1380.3
LANGUAGE 2,188 1.1% 474 21.7% 39 1163.7 8955.9
CHEMICAL NAME 307 0.2% 147 47.9% 9 80.4 344.3
ISSN 14 0.0% 8 57.1% 250 291.3 81.9
ISBN 5 0.0% 4 80.0% 52 52.0 0.0
ID NUMBER 131404 66.5% 6,693 5.1% 1 1.0 0.0
PRODUCT NUMBER 1 0.0% 1 100% 0 0.0 0.0
STANDARD NUMBER 18 0.0% 7 38.9% 1 1.0 0.0
ISN 0 0.0% 0 0.0% 0 0.0 0.0
AT 2,740 1.4% 747 27.3% 21 633.7 4936.0
Other indexes 7 0.0% 4 57.1% 2,649 2649.0 0.0
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 12,143 6.7% 4,153 34.2% 8 398.4 4556.7
Single 170,094 93.3% 15,550 9.1% 1 143.0 3232.4
PRESENT commands, by type:
MARC 56.2%
OPAC 26.4%