MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS
Time period: 11/01/99 through 11/30/99
1.0 SUMMARY STATISTICS
_______________________
Relative use of INSPEC databases:
Number of
Searches Records Presented
________ _________________
INS (current) 38,441 1,858,266
INS90 12,364 172,875
INS85 8,962 78,797
INS80 7,661 41,432
INS69 7,807 67,112
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 1,892 49,958
2-4 a.m. 555 20,761
4-6 a.m. 369 9,189
6-8 a.m. 587 25,473
8-10 a.m. 4,080 119,803
10-12 a.m. 11,312 331,838
12-2 p.m. 11,732 368,701
2-4 p.m. 15,363 435,769
4-6 p.m. 13,487 367,706
6-8 p.m. 6,804 226,948
8-10 p.m. 4,935 148,797
10-12 p.m. 4,119 113,539
__________ _____________ _________________
Total: 75,235 2,218,482
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 95
Davis 58
Irvine 96
Los Angeles 72
Riverside 3
San Diego 2,029
San Francisco 53
Santa Barbara 281
Santa Cruz 398
Lawrence Berkeley 95
Lawrence Livermore 58
Los Alamos 0
MELWEB 71,618
Other - UC 138
Other-Network UC 241
_____
75,235
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 1,015
Davis 455
Irvine 1,033
Los Angeles 1,237
Riverside 2
San Diego 3,576
San Francisco 240
Santa Barbara 4,641
Santa Cruz 234
Lawrence Berkeley 1,763
Lawrence Livermore 2,668
Los Alamos 0
MELWEB 2,193,988
Other - UC 0
Other-Network UC 7,630
_____
2,218,482
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 1.9
Standard deviation in seconds 8.3
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.3
Standard deviation in seconds 0.7
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 22:42
Average session length (minutes:seconds) 24:26
Longest session recorded (minutes:seconds) 241:10
Average number of searches completed per session 0.0
Retrievals per search - median 4.0
Retrievals per search - average 320.5
Retrievals per search - standard deviation 3698.6
Percent of searches completed with 0 results 29.1%
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 75,235 15.7%
PRESENT 371,283 77.5%
INIT or CLOSE 31,526 6.6%
OTHER 858 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 28,474 29.2% 8,161 28.7% 9 62.8 1263.1
TITLE WORD 16,299 16.7% 5,954 36.5% 4 99.9 1868.4
EXACT TITLE 1,292 1.3% 612 47.4% 1 9.1 46.1
JOURNAL 4,224 4.3% 2,054 48.6% 6 1329.4 7504.1
EXACT JOURNAL 1,301 1.3% 598 46.0% 143 1836.3 4897.8
SUBJECT 4,352 4.5% 1,886 43.3% 10 260.4 1771.8
EXACT SUBJECT 874 0.9% 205 23.5% 6 272.3 1047.2
THESAURUS 25 0.0% 11 44.0% 11 40.5 86.4
EXACT THESAURUS 257 0.3% 39 15.2% 26 1004.5 2940.2
KEYWORD 27,668 28.4% 6,627 23.9% 20 804.3 6185.0
SUBFILE 240 0.2% 42 17.5% 22 276.9 808.9
FORM 1,234 1.3% 370 30.0% 17 192.0 765.8
DATE 918 0.9% 208 22.7% 12 129.4 465.5
ADDED 587 0.6% 408 69.5% 2 10.7 26.2
ARTICLE 115 0.1% 25 21.7% 95 747.7 1456.0
AUTHOR AFFIL. 989 1.0% 458 46.3% 10 63.4 425.7
CONFERENCE 202 0.2% 94 46.5% 22 3353.8 23287.9
LANGUAGE 3,733 3.8% 986 26.4% 25 488.7 3989.9
CHEMICAL NAME 262 0.3% 108 41.2% 12 280.4 855.8
ISSN 13 0.0% 1 7.7% 2 196.5 659.6
ISBN 16 0.0% 10 62.5% 114 157.0 109.4
ID NUMBER 1 0.0% 0 0.0% 1 1.0 0.0
PRODUCT NUMBER 2 0.0% 2 100% 0 0.0 0.0
STANDARD NUMBER 35 0.0% 29 82.9% 1 11.3 16.0
ISN 0 0.0% 0 0.0% 0 0.0 0.0
AT 4,366 4.5% 1,287 29.5% 20 599.2 4227.3
Other indexes 21 0.0% 16 76.2% 35 63.8 44.0
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 17,625 23.4% 6,532 37.1% 7 302.2 3317.9
Single 57,610 76.6% 15,351 26.6% 12 491.3 4624.1
PRESENT commands, by type:
MARC 34.5%
OPAC 40.6%