MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS
Time period: 01/01/00 through 01/31/00
1.0 SUMMARY STATISTICS
_______________________
Relative use of INSPEC databases:
Number of
Searches Records Presented
________ _________________
INS (current) 37,608 1,755,133
INS90 10,862 148,659
INS85 8,199 70,848
INS80 7,047 50,012
INS69 7,125 69,833
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 1,534 36,196
2-4 a.m. 684 14,174
4-6 a.m. 320 12,310
6-8 a.m. 771 20,776
8-10 a.m. 3,598 93,871
10-12 a.m. 11,515 352,050
12-2 p.m. 11,565 330,645
2-4 p.m. 14,092 426,133
4-6 p.m. 13,297 395,782
6-8 p.m. 6,036 186,474
8-10 p.m. 4,464 138,124
10-12 p.m. 2,965 87,950
__________ _____________ _________________
Total: 70,841 2,094,485
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 214
Davis 75
Irvine 98
Los Angeles 85
Riverside 2
San Diego 1,356
San Francisco 39
Santa Barbara 157
Santa Cruz 89
Lawrence Berkeley 857
Lawrence Livermore 202
Los Alamos 0
MELWEB 67,029
Other - UC 109
Other-Network UC 529
_____
70,841
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 8,695
Davis 451
Irvine 488
Los Angeles 862
Riverside 20
San Diego 4,293
San Francisco 459
Santa Barbara 2,625
Santa Cruz 195
Lawrence Berkeley 7,963
Lawrence Livermore 8,901
Los Alamos 0
MELWEB 2,046,134
Other - UC 6
Other-Network UC 13,393
_____
2,094,485
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 11.9
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.3
Standard deviation in seconds 0.6
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 22:24
Average session length (minutes:seconds) 23:05
Longest session recorded (minutes:seconds) 224:31
Average number of searches completed per session 0.0
Retrievals per search - median 4.0
Retrievals per search - average 423.1
Retrievals per search - standard deviation 4657.6
Percent of searches completed with 0 results 29.1%
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 70,841 15.2%
PRESENT 362,774 78.0%
INIT or CLOSE 30,352 6.5%
OTHER 1,152 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 26,128 28.2% 7,319 28.0% 9 53.4 412.3
TITLE WORD 14,290 15.4% 5,521 38.6% 4 95.3 1881.9
EXACT TITLE 1,271 1.4% 687 54.1% 1 31.6 261.7
JOURNAL 4,079 4.4% 1,946 47.7% 8 1407.2 6992.0
EXACT JOURNAL 1,175 1.3% 529 45.0% 270 3564.3 8348.9
SUBJECT 4,079 4.4% 1,680 41.2% 11 393.8 3066.8
EXACT SUBJECT 804 0.9% 173 21.5% 10 469.1 1744.4
THESAURUS 55 0.1% 27 49.1% 10 266.7 1323.2
EXACT THESAURUS 217 0.2% 25 11.5% 32 835.5 2406.4
KEYWORD 27,289 29.4% 6,560 24.0% 21 1036.8 7927.0
SUBFILE 112 0.1% 38 33.9% 34 271.9 837.2
FORM 956 1.0% 331 34.6% 14 215.5 1037.8
DATE 1,580 1.7% 395 25.0% 6 159.0 822.8
ADDED 517 0.6% 382 73.9% 3 16.3 30.2
ARTICLE 116 0.1% 38 32.8% 34 1010.2 3035.9
AUTHOR AFFIL. 961 1.0% 472 49.1% 8 37.1 231.2
CONFERENCE 342 0.4% 123 36.0% 107 1850.6 10043.8
LANGUAGE 3,344 3.6% 997 29.8% 28 742.3 4741.6
CHEMICAL NAME 552 0.6% 275 49.8% 12 219.6 2018.5
ISSN 7 0.0% 5 71.4% 1 1.0 0.0
ISBN 3 0.0% 0 0.0% 1 13.7 21.9
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PRODUCT NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
STANDARD NUMBER 88 0.1% 70 79.5% 1 1.4 0.5
ISN 0 0.0% 0 0.0% 0 0.0 0.0
AT 4,723 5.1% 1,536 32.5% 17 796.0 4392.1
Other indexes 16 0.0% 13 81.3% 617 463.7 392.2
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 17,494 24.7% 6,807 38.9% 7 370.9 3121.2
Single 53,347 75.3% 13,808 25.9% 14 657.9 6007.1
PRESENT commands, by type:
MARC 38.2%
OPAC 38.6%
SINmm/dd srv.ins MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS (weekly)