MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS
Time period: 09/01/99 through 09/30/99
1.0 SUMMARY STATISTICS
_______________________
Relative use of INSPEC databases:
Number of
Searches Records Presented
________ _________________
INS (current) 28,707 1,420,935
INS90 8,887 134,275
INS85 6,598 66,735
INS80 5,553 38,290
INS69 5,702 56,015
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 1,240 30,902
2-4 a.m. 532 11,311
4-6 a.m. 264 3,774
6-8 a.m. 497 12,807
8-10 a.m. 3,438 90,593
10-12 a.m. 9,189 277,397
12-2 p.m. 8,520 254,075
2-4 p.m. 12,734 407,778
4-6 p.m. 10,269 334,621
6-8 p.m. 4,215 122,466
8-10 p.m. 2,235 71,579
10-12 p.m. 2,314 98,947
__________ _____________ _________________
Total: 55,447 1,716,250
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 520
Davis 39
Irvine 84
Los Angeles 135
Riverside 0
San Diego 1,305
San Francisco 27
Santa Barbara 238
Santa Cruz 383
Lawrence Berkeley 242
Lawrence Livermore 17
Los Alamos 0
MELWEB 51,989
Other - UC 302
Other-Network UC 166
_____
55,447
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 83,604
Davis 175
Irvine 1,104
Los Angeles 1,820
Riverside 0
San Diego 5,704
San Francisco 414
Santa Barbara 9,044
Santa Cruz 1,118
Lawrence Berkeley 3,143
Lawrence Livermore 200
Los Alamos 0
MELWEB 1,605,411
Other - UC 503
Other-Network UC 4,010
_____
1,716,250
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 1.8
Standard deviation in seconds 11.6
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.3
Standard deviation in seconds 0.8
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 22:40
Average session length (minutes:seconds) 24:32
Longest session recorded (minutes:seconds) 220:40
Average number of searches completed per session 0.0
Retrievals per search - median 4.0
Retrievals per search - average 321.9
Retrievals per search - standard deviation 3237.3
Percent of searches completed with 0 results 27.0%
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 55,447 14.1%
PRESENT 312,808 79.8%
INIT or CLOSE 23,000 5.9%
OTHER 850 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 24,055 33.8% 6,494 27.0% 9 56.1 385.8
TITLE WORD 11,561 16.2% 4,066 35.2% 4 70.1 538.2
EXACT TITLE 810 1.1% 436 53.8% 1 6.0 24.4
JOURNAL 3,988 5.6% 1,738 43.6% 10 1300.5 6419.4
EXACT JOURNAL 819 1.2% 332 40.5% 258 2641.7 6022.9
SUBJECT 2,360 3.3% 858 36.4% 10 282.5 1384.8
EXACT SUBJECT 492 0.7% 138 28.0% 7 279.2 1147.7
THESAURUS 8 0.0% 8 100% 0 0.0 0.0
EXACT THESAURUS 102 0.1% 15 14.7% 26 1362.0 4165.5
KEYWORD 18,356 25.8% 3,928 21.4% 21 804.2 5588.8
SUBFILE 160 0.2% 29 18.1% 21 411.8 1767.1
FORM 753 1.1% 183 24.3% 19 312.5 2342.4
DATE 834 1.2% 165 19.8% 10 74.0 441.8
ADDED 293 0.4% 208 71.0% 3 13.0 29.6
ARTICLE 89 0.1% 23 25.8% 22 444.2 1510.6
AUTHOR AFFIL. 925 1.3% 426 46.1% 8 70.2 275.8
CONFERENCE 203 0.3% 96 47.3% 12 233.5 544.3
LANGUAGE 2,494 3.5% 597 23.9% 21 392.6 2138.0
CHEMICAL NAME 294 0.4% 180 61.2% 8 41.9 234.2
ISSN 6 0.0% 3 50.0% 526 354.3 297.3
ISBN 22 0.0% 11 50.0% 21 39.6 72.8
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PRODUCT NUMBER 10 0.0% 8 80.0% 24 24.0 25.5
STANDARD NUMBER 1 0.0% 1 100% 0 0.0 0.0
ISN 0 0.0% 0 0.0% 0 0.0 0.0
AT 2,559 3.6% 672 26.3% 15 635.0 3427.8
Other indexes 8 0.0% 6 75.0% 96 96.0 82.0
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 13,064 23.6% 4,703 36.0% 6 234.0 1934.4
Single 42,383 76.4% 10,245 24.2% 14 494.5 4126.5
PRESENT commands, by type:
MARC 43.1%
OPAC 34.0%