MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 05/25/02 through 05/31/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 0 219 219
Davis 27 1 28
Irvine 25 0 25
Los Angeles 0 74 74
Riverside 1 3 4
San Diego 29 61 90
San Francisco 6 0 6
Santa Barbara 2 58 60
Santa Cruz 4 17 21
Lawrence Berkeley 0 22 22
Lawrence Livermore 0 15 15
Los Alamos 0 0 0
Other - UC 3 31 34
Other-Network UC n/a 121 121
_______ ______ _____
97 622 719
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 457 1,011 9,330
INS90 113 198 1,867
INS85 67 137 1,102
INS80 54 78 209
INS69 28 57 520
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 27 78 674
2-4 a.m. 7 9 92
4-6 a.m. 18 33 192
6-8 a.m. 25 50 284
8-10 a.m. 89 165 1,106
10-12 a.m. 114 224 3,211
12-2 p.m. 118 231 1,749
2-4 p.m. 104 199 947
4-6 p.m. 99 228 3,454
6-8 p.m. 37 75 595
8-10 p.m. 38 92 343
10-12 p.m. 43 97 381
__________ __________ __________ _________________
Total: 719 1,481 13,028
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 0 502 502
Davis 63 1 64
Irvine 55 0 55
Los Angeles 0 131 131
Riverside 2 13 15
San Diego 46 124 170
San Francisco 15 0 15
Santa Barbara 4 149 153
Santa Cruz 6 27 33
Lawrence Berkeley 0 42 42
Lawrence Livermore 0 34 34
Los Alamos 0 0 0
Other - UC 9 58 67
Other-Network UC n/a 200 200
_______ ______ _____
200 1,281 1,481
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 0 4,164 4,164
Davis 546 1 547
Irvine 2,621 0 2,621
Los Angeles 0 687 687
Riverside 0 56 56
San Diego 960 1,050 2,010
San Francisco 41 0 41
Santa Barbara 1 686 687
Santa Cruz 55 78 133
Lawrence Berkeley 0 691 691
Lawrence Livermore 0 76 76
Los Alamos 0 0 0
Other - UC 83 382 465
Other-Network UC n/a 850 850
_______ ______ _____
4,307 8,721 13,028
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.6
Standard deviation in seconds 1.5
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) 8:08
Average session length (minutes:seconds) 13:58
Longest session recorded (minutes:seconds) 501:34
Average number of searches completed per session 2.0
Retrievals per search - median 4.0
Retrievals per search - average 201.7
Retrievals per search - standard deviation 1334.8
Percent of searches completed with 0 results 26.7%
Percent of searches entered that are long 3.4%
Percent of long searches completed
(includes partial results) 68.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,402 30.9%
DISPLAY (excluding automatic displays) 1,686 37.2%
BROWSE 1 0.0%
SELECT 0 0.0%
HELP 15 0.3%
EXPLAIN 37 0.8%
SET/RESET 403 8.9%
SHOW 14 0.3%
ADD ON (AND, OR, AND NOT) 79 1.7%
LOGON or LOGOFF 672 14.8%
COMMENT 0 0.0%
SAVE 39 0.9%
USE 0 0.0%
OTHER 190 4.2%
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 712 46.4% 171 24.0% 11 79.0 492.6
TITLE WORD 323 21.0% 138 42.7% 2 72.5 389.0
EXACT TITLE 11 0.7% 3 27.3% 1 5.6 13.1
JOURNAL 43 2.8% 20 46.5% 3 120.3 268.9
EXACT JOURNAL 17 1.1% 9 52.9% 2 17.8 45.4
SUBJECT 41 2.7% 20 48.8% 10 547.4 1631.2
EXACT SUBJECT 1 0.1% 0 0.0% 2,858 2858.0 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 310 20.2% 68 21.9% 16 894.5 3045.5
SUBFILE 2 0.1% 0 0.0% 48 48.0 36.8
FORM 2 0.1% 0 0.0% 3 2.5 2.1
DATE 7 0.5% 3 42.9% 2 5.5 8.3
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. 11 0.7% 5 45.5% 29 36.2 32.7
CONFERENCE 5 0.3% 1 20.0% 25 67.8 85.5
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
CHEMICAL NAME 10 0.7% 4 40.0% 15 13.2 4.3
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 36 2.3% 2 5.6% 9 62.0 213.4
EXACT PE 4 0.3% 0 0.0% 5 4.8 1.0
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 1 0.1% 0 0.0% 146 146.0 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 149 10.8% 67 45.0% 2 8.2 15.8
Single 1,236 89.2% 308 24.9% 11 314.2 1665.6
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 1 100% 0 0.0% 1 1.0 0.0
EXACT THESAURUS 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.7%
SHORT 83.3%
LONG 3.1%
TAGS 2.0%
FIELDS 2.3%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 5.7%
COMMENTS 0.0%
Other 0.8%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 16.9%
Ten most frequent errors:
1. First word of command is invalid 62.3%
2. NS command - no next screen 18.0%
3. 167 7.0%
4. FIND command with invalid index name 2.8%
5. DISPLAY command contains invalid word 2.6%
6. Search term missing from search command 1.2%
7. PS command - no previous screen 0.8%
8. Valid command at an inappropriate time 0.5%
9. Invalid SET DB INS command issued 0.5%
10. DISPLAY command - no FIND results 0.4%
11. All others 3.8%
Ten most frequent EXPLAIN requests:
1. FIND (INSPEC DBS) 16.2%
2. INSPEC DATABASES 13.5%
3. MAIL 8.1%
4. LOCATE (INS/PSY DBS) 8.1%
5. GUIDE (INSPEC DBS) 8.1%
6. INSPEC BACKFILES 8.1%
7. DATABASES 5.4%
8. 1752 5.4%
9. G124 2.7%
10. FIND (INSPEC DBS) 2.7%
11. All others 21.6%
Ten most frequent HELP situations:
1. Help requested from SET DB command 23.1%
2. First word of command is invalid 11.5%
3. FIND command with invalid index name 7.7%
4. FIND command retrieves 1 book 7.7%
5. DISPLAY command - last of >1 screen 7.7%
6. 850 7.7%
7. SET command with invalid setting 5.8%
8. DISPLAY command-complete in one screen 5.8%
9. 328 5.8%
10. DISPLAY command contains invalid word 3.8%
11. All others 13.5%
Ten most frequent SHOW requests:
1. MAIL STATUS 50.0%
2. HISTORY 42.9%
3. INSPEC NEWS 7.1%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)