MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 03/30/02 through 04/05/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 5 221 226
Davis 19 1 20
Irvine 44 0 44
Los Angeles 0 115 115
Riverside 4 3 7
San Diego 36 88 124
San Francisco 1 0 1
Santa Barbara 3 14 17
Santa Cruz 5 12 17
Lawrence Berkeley 0 35 35
Lawrence Livermore 0 37 37
Los Alamos 0 0 0
Other - UC 0 16 16
Other-Network UC n/a 342 342
_______ ______ _____
117 884 1,001
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 640 1,441 13,572
INS90 142 254 1,165
INS85 92 141 755
INS80 62 88 366
INS69 65 141 881
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 31 47 207
2-4 a.m. 8 21 53
4-6 a.m. 27 46 265
6-8 a.m. 43 109 624
8-10 a.m. 139 255 1,572
10-12 a.m. 193 412 2,200
12-2 p.m. 121 201 1,894
2-4 p.m. 190 432 3,974
4-6 p.m. 147 336 4,227
6-8 p.m. 22 72 244
8-10 p.m. 32 50 396
10-12 p.m. 48 84 1,083
__________ __________ __________ _________________
Total: 1,001 2,065 16,739
1.2 FIND commands
__________________
Zero results may indicate no access to the database
Number of FIND commands issued by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 9 469 478
Davis 29 3 32
Irvine 101 0 101
Los Angeles 0 205 205
Riverside 8 13 21
San Diego 77 207 284
San Francisco 1 0 1
Santa Barbara 3 30 33
Santa Cruz 15 26 41
Lawrence Berkeley 0 104 104
Lawrence Livermore 0 96 96
Los Alamos 0 0 0
Other - UC 0 44 44
Other-Network UC n/a 625 625
_______ ______ _____
243 1,822 2,065
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 25 4,326 4,351
Davis 198 10 208
Irvine 826 0 826
Los Angeles 0 1,689 1,689
Riverside 63 95 158
San Diego 754 1,689 2,443
San Francisco 3 0 3
Santa Barbara 11 196 207
Santa Cruz 32 54 86
Lawrence Berkeley 0 1,512 1,512
Lawrence Livermore 0 885 885
Los Alamos 0 0 0
Other - UC 0 359 359
Other-Network UC n/a 4,012 4,012
_______ ______ _____
1,912 14,827 16,739
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.7
Standard deviation in seconds 4.9
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.1
2.0 INSPEC Databases Detailed Statistics
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Median session length (minutes:seconds) 10:48
Average session length (minutes:seconds) 17:46
Longest session recorded (minutes:seconds) 595:47
Average number of searches completed per session 2.0
Retrievals per search - median 5.0
Retrievals per search - average 313.0
Retrievals per search - standard deviation 5060.2
Percent of searches completed with 0 results 29.8%
Percent of searches entered that are long 4.8%
Percent of long searches completed
(includes partial results) 76.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,882 30.2%
DISPLAY (excluding automatic displays) 2,196 35.2%
BROWSE 0 0.0%
SELECT 0 0.0%
HELP 31 0.5%
EXPLAIN 81 1.3%
SET/RESET 598 9.6%
SHOW 16 0.3%
ADD ON (AND, OR, AND NOT) 183 2.9%
LOGON or LOGOFF 850 13.6%
COMMENT 0 0.0%
SAVE 132 2.1%
USE 0 0.0%
OTHER 265 4.3%
FINDs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By index:
PERSONAL AUTHOR 957 45.4% 251 26.2% 16 70.6 222.5
TITLE WORD 391 18.5% 198 50.6% 5 152.4 1140.5
EXACT TITLE 12 0.6% 8 66.7% 1 3.8 5.5
JOURNAL 43 2.0% 24 55.8% 20 1973.6 7660.2
EXACT JOURNAL 29 1.4% 18 62.1% 160 635.5 1099.0
SUBJECT 58 2.7% 16 27.6% 49 395.7 1291.0
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
KEYWORD 440 20.9% 96 21.8% 19 1428.0 12093.7
SUBFILE 13 0.6% 3 23.1% 42 43.6 33.1
FORM 8 0.4% 0 0.0% 114 158.6 195.3
DATE 60 2.8% 13 21.7% 12 71.7 211.8
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 26 1.2% 8 30.8% 11 38.2 46.8
CONFERENCE 1 0.0% 0 0.0% 28 28.0 0.0
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 2 0.1% 2 100% 0 0.0 0.0
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
ISBN 1 0.0% 0 0.0% 48 48.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 61 2.9% 7 11.5% 5 34.5 131.3
EXACT PE 8 0.4% 1 12.5% 3 22.7 48.1
RPE 0 0.0% 0 0.0% 0 0.0 0.0
XRP 0 0.0% 0 0.0% 0 0.0 0.0
COMMENTS 0 0.0% 0 0.0% 0 0.0 0.0
Other indexes 0 0.0% 0 0.0% 0 0.0 0.0
RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. FINDs No. Index Median Avg. Dev.
______ ______ ______ _______ ______ _______ _______
By number of indexes:
Multiple 245 13.2% 101 41.2% 9 47.3 137.6
Single 1,613 86.8% 440 27.3% 16 533.6 6663.9
BROWSEs completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. BROWSEs No. Index Median Avg. Dev.
______ _______ ______ _______ ______ _______ _______
By index:
THESAURUS 0 0.0% 0 0.0% 0.0 0.0 0.0
EXACT THESAURUS 0 0.0% 0 0.0% 0.0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 6.6%
SHORT 80.8%
LONG 2.8%
TAGS 0.0%
FIELDS 3.7%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.9%
COMMENTS 0.0%
Other 1.2%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.1%
Ten most frequent errors:
1. NS command - no next screen 51.8%
2. First word of command is invalid 22.1%
3. FIND command with invalid index name 6.0%
4. DISPLAY command contains invalid word 3.4%
5. PS command - no previous screen 1.8%
6. Invalid SET DB INS command issued 1.6%
7. DISPLAY command - no FIND results 1.4%
8. Add-on search, no index name after verb 1.1%
9. DISPLAY command-record numbers too large 0.9%
10. BROWSE command with invalid index name 0.9%
11. All others 8.9%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 14.8%
2. INSPEC DATABASES 11.1%
3. MAIL 9.9%
4. INDEXES (INSPEC DBS) 8.6%
5. DATABASES 6.2%
6. GUIDE (INSPEC DBS) 4.9%
7. DISPLAY (INS/PSY DBS) 4.9%
8. 5341 4.9%
9. 1217 3.7%
10. 1615 3.7%
11. All others 27.2%
Ten most frequent HELP situations:
1. Help requested from SET DB command 32.1%
2. DISPLAY command - middle of >1 screen 10.7%
3. First word of command is invalid 8.9%
4. FIND command with zero results 5.4%
5. DISPLAY command-first of >1 screen 4.5%
6. FIND command with invalid index name 3.6%
7. DISPLAY command-complete in one screen 3.6%
8. Help requested from MAIL command 3.6%
9. NS command - no next screen 2.7%
10. FIND command retrieves >1 book 2.7%
11. All others 22.3%
Ten most frequent SHOW requests:
1. HISTORY 71.4%
2. SEARCH 14.3%
3. SETTINGS (INS/PSY DBS) 7.1%
4. LIBRARY SETTINGS 7.1%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)