MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS
Time period: 03/01/99 through 03/31/99
1.0 SUMMARY STATISTICS
_______________________
Relative use of INSPEC databases:
Number of
Searches Records Presented
________ _________________
INS (current) 36,434 1,734,080
INS90 7,087 116,435
INS85 4,586 69,741
INS80 2,841 39,700
INS69 3,121 64,690
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 1,319 40,907
2-4 a.m. 615 21,067
4-6 a.m. 366 28,669
6-8 a.m. 679 46,718
8-10 a.m. 3,692 112,597
10-12 a.m. 8,396 313,805
12-2 p.m. 8,165 294,810
2-4 p.m. 10,754 404,448
4-6 p.m. 9,443 379,831
6-8 p.m. 4,882 181,270
8-10 p.m. 2,961 104,053
10-12 p.m. 2,797 96,471
__________ _____________ _________________
Total: 54,069 2,024,646
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 182
Davis 14
Irvine 64
Los Angeles 45
Riverside 0
San Diego 1,288
San Francisco 55
Santa Barbara 360
Santa Cruz 102
Lawrence Berkeley 210
Lawrence Livermore 205
Los Alamos 0
MELWEB 51,028
Other - UC 305
Other-Network UC 211
_____
54,069
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 2,278
Davis 17
Irvine 887
Los Angeles 281
Riverside 0
San Diego 6,113
San Francisco 176
Santa Barbara 7,925
Santa Cruz 0
Lawrence Berkeley 11,874
Lawrence Livermore 4,506
Los Alamos 0
MELWEB 1,981,216
Other - UC 464
Other-Network UC 8,909
_____
2,024,646
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 1.7
Standard deviation in seconds 8.5
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.2
Standard deviation in seconds 0.5
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 23:16
Average session length (minutes:seconds) 25:05
Longest session recorded (minutes:seconds) 264:43
Average number of searches completed per session 0.0
Retrievals per search - median 5.0
Retrievals per search - average 438.2
Retrievals per search - standard deviation 5435.3
Percent of searches completed with 0 results 26.7%
Percent of searches entered that are long 0.7%
Percent of long searches completed
(includes partial results) 100%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
SEARCH 54,069 11.8%
PRESENT 386,642 84.7%
INIT or CLOSE 14,946 3.3%
OTHER 899 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 23,325 32.9% 6,256 26.8% 10 82.1 686.0
TITLE WORD 10,736 15.2% 3,828 35.7% 4 126.9 1562.2
EXACT TITLE 927 1.3% 458 49.4% 1 32.5 289.5
JOURNAL 3,248 4.6% 1,562 48.1% 9 1363.8 7240.1
EXACT JOURNAL 967 1.4% 437 45.2% 324 3102.7 7885.1
SUBJECT 2,782 3.9% 986 35.4% 13 398.6 2028.9
EXACT SUBJECT 858 1.2% 165 19.2% 5 305.0 1091.3
THESAURUS 49 0.1% 27 55.1% 196 2895.9 5731.7
EXACT THESAURUS 524 0.7% 98 18.7% 45 909.0 2191.7
KEYWORD 17,650 24.9% 3,401 19.3% 28 1130.7 9801.1
SUBFILE 131 0.2% 28 21.4% 18 121.9 282.2
FORM 767 1.1% 215 28.0% 21 233.5 1582.0
DATE 660 0.9% 184 27.9% 11 183.9 719.5
ADDED 206 0.3% 155 75.2% 5 17.3 31.1
ARTICLE 772 1.1% 162 21.0% 30 447.1 3421.1
AUTHOR AFFIL. 844 1.2% 406 48.1% 14 156.3 877.7
CONFERENCE 243 0.3% 126 51.9% 57 3108.9 22952.0
LANGUAGE 2,588 3.7% 573 22.1% 40 749.6 4127.8
CHEMICAL NAME 343 0.5% 147 42.9% 11 177.5 666.6
ISSN 4 0.0% 4 100% 0 0.0 0.0
ISBN 3 0.0% 3 100% 0 0.0 0.0
ID NUMBER 6 0.0% 2 33.3% 1 1.0 0.0
PRODUCT NUMBER 2 0.0% 2 100% 0 0.0 0.0
STANDARD NUMBER 27 0.0% 14 51.9% 1 51.1 109.9
ISN 0 0.0% 0 0.0% 0 0.0 0.0
AT 3,134 4.4% 847 27.0% 23 422.1 2447.6
Other indexes 0 0.0% 0 0.0% 0 0.0 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 13,440 24.9% 4,609 34.3% 9 337.8 2609.0
Single 40,629 75.1% 9,810 24.1% 16 672.0 7052.2
PRESENT commands, by type:
MARC 37.1%
OPAC 35.3%