MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS
Time period: 11/01/00 through 11/30/00
1.0 SUMMARY STATISTICS
_______________________
Relative use of INSPEC databases:
Number of
Searches Records Presented
________ _________________
INS (current) 44,963 1,660,587
INS90 17,471 150,984
INS85 14,641 76,257
INS80 13,454 41,920
INS69 13,784 65,159
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 2,829 71,773
2-4 a.m. 901 20,916
4-6 a.m. 438 10,571
6-8 a.m. 817 21,186
8-10 a.m. 5,409 110,923
10-12 a.m. 14,580 265,270
12-2 p.m. 16,137 287,722
2-4 p.m. 21,050 408,122
4-6 p.m. 19,125 376,016
6-8 p.m. 10,408 194,167
8-10 p.m. 7,618 128,082
10-12 p.m. 5,001 100,159
__________ _____________ _________________
Total: 104,313 1,994,907
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 200
Davis 113
Irvine 291
Los Angeles 163
Riverside 0
San Diego 453
San Francisco 60
Santa Barbara 164
Santa Cruz 77
Lawrence Berkeley 182
Lawrence Livermore 73
Los Alamos 0
MELWEB 80,676
Searchlight 21,613
Other - UC 72
Other-Network UC 176
_____
104,313
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 2,279
Davis 1,005
Irvine 5,936
Los Angeles 3,850
Riverside 0
San Diego 3,819
San Francisco 486
Santa Barbara 5,208
Santa Cruz 1,135
Lawrence Berkeley 2,340
Lawrence Livermore 5,355
Los Alamos 0
MELWEB 1,944,864
Searchlight 11,698
Other - UC 231
Other-Network UC 6,701
_____
1,994,907
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 1.1
Standard deviation in seconds 5.9
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) 20:38
Average session length (minutes:seconds) 16:20
Longest session recorded (minutes:seconds) 222:13
Average number of searches completed per session 0.0
Retrievals per search - median 2.0
Retrievals per search - average 429.0
Retrievals per search - standard deviation 6321.7
Percent of searches completed with 0 results 34.8%
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 104,313 19.7%
PRESENT 364,026 68.9%
INIT or CLOSE 58,710 11.1%
OTHER 1,141 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 32,040 24.9% 10,077 31.4% 9 68.6 730.7
TITLE WORD 20,426 15.9% 8,324 40.8% 3 67.4 477.7
EXACT TITLE 1,307 1.0% 568 43.5% 1 4.6 23.6
JOURNAL 4,637 3.6% 2,279 49.1% 6 1271.1 6962.6
EXACT JOURNAL 1,265 1.0% 542 42.8% 385 3119.1 7670.1
SUBJECT 4,568 3.6% 1,980 43.3% 9 368.6 2125.0
EXACT SUBJECT 1,017 0.8% 313 30.8% 8 324.4 1415.2
THESAURUS 28 0.0% 12 42.9% 4 565.9 2231.5
EXACT THESAURUS 300 0.2% 54 18.0% 19 629.1 1969.0
KEYWORD 50,689 39.4% 17,673 34.9% 18 1098.8 10959.1
SUBFILE 131 0.1% 46 35.1% 47 498.2 1934.0
FORM 1,129 0.9% 345 30.6% 24 317.0 1658.3
DATE 1,054 0.8% 324 30.7% 8 126.6 542.0
ADDED 381 0.3% 250 65.6% 3 11.5 16.0
ARTICLE 94 0.1% 28 29.8% 35 545.4 1839.0
AUTHOR AFFIL. 1,171 0.9% 544 46.5% 8 51.5 339.3
CONFERENCE 245 0.2% 107 43.7% 46 241.5 595.1
LANGUAGE 3,482 2.7% 954 27.4% 24 493.7 3039.9
CHEMICAL NAME 639 0.5% 330 51.6% 10 97.4 295.1
ISSN 12 0.0% 9 75.0% 152 109.3 93.6
ISBN 25 0.0% 9 36.0% 73 147.2 170.8
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PRODUCT NUMBER 6 0.0% 6 100% 0 0.0 0.0
STANDARD NUMBER 4 0.0% 4 100% 0 0.0 0.0
ISN 0 0.0% 0 0.0% 0 0.0 0.0
AT 3,940 3.1% 1,229 31.2% 13 528.3 3929.0
Other indexes 10 0.0% 6 60.0% 2 34.3 65.2
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 20,133 19.3% 8,123 40.3% 5 233.6 2306.6
Single 84,180 80.7% 28,183 33.5% 13 749.0 8548.5
PRESENT commands, by type:
MARC 38.7%
OPAC 35.6%
SINmm/dd srv.ins MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS (weekly)