MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS
Time period: 10/01/99 through 10/31/99
1.0 SUMMARY STATISTICS
_______________________
Relative use of INSPEC databases:
Number of
Searches Records Presented
________ _________________
INS (current) 37,421 1,769,072
INS90 11,834 156,059
INS85 8,590 69,941
INS80 7,269 39,568
INS69 7,373 64,563
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 1,655 44,358
2-4 a.m. 856 16,083
4-6 a.m. 305 9,154
6-8 a.m. 565 15,225
8-10 a.m. 4,220 124,173
10-12 a.m. 11,594 361,211
12-2 p.m. 11,730 325,536
2-4 p.m. 14,526 430,524
4-6 p.m. 13,149 389,716
6-8 p.m. 6,482 160,361
8-10 p.m. 3,913 112,886
10-12 p.m. 3,492 109,976
__________ _____________ _________________
Total: 72,487 2,099,203
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 106
Davis 33
Irvine 90
Los Angeles 203
Riverside 5
San Diego 2,055
San Francisco 15
Santa Barbara 176
Santa Cruz 425
Lawrence Berkeley 121
Lawrence Livermore 55
Los Alamos 0
MELWEB 25,491
Other - UC 43,503
Other-Network UC 209
_____
72,487
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 3,084
Davis 320
Irvine 664
Los Angeles 10,675
Riverside 11,758
San Diego 5,841
San Francisco 40
Santa Barbara 2,652
Santa Cruz 725
Lawrence Berkeley 3,737
Lawrence Livermore 603
Los Alamos 0
MELWEB 694,170
Other - UC 1,358,450
Other-Network UC 6,484
_____
2,099,203
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 6.9
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.3
Standard deviation in seconds 0.9
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 22:48
Average session length (minutes:seconds) 24:52
Longest session recorded (minutes:seconds) 170:08
Average number of searches completed per session 0.0
Retrievals per search - median 4.0
Retrievals per search - average 349.3
Retrievals per search - standard deviation 4146.7
Percent of searches completed with 0 results 29.6%
Percent of searches entered that are long 0.6%
Percent of long searches completed
(includes partial results) 100%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
SEARCH 72,487 15.3%
PRESENT 372,053 78.3%
INIT or CLOSE 29,455 6.2%
OTHER 1,055 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 28,930 30.5% 8,460 29.2% 9 53.4 391.1
TITLE WORD 15,688 16.5% 6,106 38.9% 4 87.2 1010.9
EXACT TITLE 1,109 1.2% 606 54.6% 1 7.1 39.0
JOURNAL 5,065 5.3% 2,584 51.0% 7 1086.7 5635.0
EXACT JOURNAL 1,251 1.3% 625 50.0% 292 2454.6 6791.5
SUBJECT 4,387 4.6% 1,930 44.0% 10 293.3 1642.2
EXACT SUBJECT 798 0.8% 177 22.2% 8 371.1 1591.2
THESAURUS 104 0.1% 66 63.5% 14 271.2 1318.7
EXACT THESAURUS 314 0.3% 72 22.9% 29 920.2 1943.5
KEYWORD 25,088 26.4% 5,640 22.5% 22 924.2 7517.4
SUBFILE 217 0.2% 66 30.4% 26 242.8 747.9
FORM 1,202 1.3% 345 28.7% 20 1032.5 8548.8
DATE 1,038 1.1% 185 17.8% 10 159.7 819.7
ADDED 343 0.4% 255 74.3% 3 55.4 243.0
ARTICLE 132 0.1% 34 25.8% 35 618.6 3633.2
AUTHOR AFFIL. 1,114 1.2% 471 42.3% 9 79.8 366.1
CONFERENCE 354 0.4% 134 37.9% 35 701.5 3620.8
LANGUAGE 3,260 3.4% 949 29.1% 26 502.8 2919.5
CHEMICAL NAME 551 0.6% 312 56.6% 5 166.9 995.3
ISSN 21 0.0% 15 71.4% 227 425.2 411.4
ISBN 10 0.0% 8 80.0% 70 70.0 5.7
ID NUMBER 6 0.0% 5 83.3% 1 1.0 0.0
PRODUCT NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
STANDARD NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
ISN 0 0.0% 0 0.0% 0 0.0 0.0
AT 3,874 4.1% 1,200 31.0% 17 716.5 5347.6
Other indexes 27 0.0% 16 59.3% 38 61.5 50.2
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 18,107 25.0% 7,148 39.5% 7 335.1 3715.4
Single 54,380 75.0% 14,276 26.3% 14 539.8 5216.0
PRESENT commands, by type:
MARC 39.0%
OPAC 37.1%