MELVYL INSPEC DATABASES TELNET STATISTICS
Time period: 04/13/02 through 04/19/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 14 192 206
Davis 66 0 66
Irvine 67 0 67
Los Angeles 0 89 89
Riverside 0 33 33
San Diego 18 106 124
San Francisco 0 0 0
Santa Barbara 2 13 15
Santa Cruz 1 14 15
Lawrence Berkeley 0 13 13
Lawrence Livermore 0 3 3
Los Alamos 0 0 0
Other - UC 0 9 9
Other-Network UC n/a 317 317
_______ ______ _____
168 789 957
Relative use of INSPEC databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
INS (current) 605 1,290 12,086
INS90 128 276 1,629
INS85 96 166 1,018
INS80 67 142 775
INS69 61 130 1,031
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 50 85 1,053
2-4 a.m. 22 69 772
4-6 a.m. 25 39 202
6-8 a.m. 50 151 931
8-10 a.m. 138 363 3,011
10-12 a.m. 179 351 2,228
12-2 p.m. 121 225 2,222
2-4 p.m. 153 290 2,523
4-6 p.m. 109 215 2,116
6-8 p.m. 31 55 359
8-10 p.m. 42 97 639
10-12 p.m. 37 64 483
__________ __________ __________ _________________
Total: 957 2,004 16,539
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 23 404 427
Davis 133 0 133
Irvine 148 0 148
Los Angeles 0 177 177
Riverside 0 193 193
San Diego 38 191 229
San Francisco 0 0 0
Santa Barbara 2 14 16
Santa Cruz 5 24 29
Lawrence Berkeley 0 19 19
Lawrence Livermore 0 8 8
Los Alamos 0 0 0
Other - UC 0 15 15
Other-Network UC n/a 610 610
_______ ______ _____
349 1,655 2,004
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 94 3,504 3,598
Davis 1,331 0 1,331
Irvine 1,976 0 1,976
Los Angeles 0 1,855 1,855
Riverside 0 809 809
San Diego 177 2,490 2,667
San Francisco 0 0 0
Santa Barbara 0 288 288
Santa Cruz 2 175 177
Lawrence Berkeley 0 208 208
Lawrence Livermore 0 38 38
Los Alamos 0 0 0
Other - UC 0 149 149
Other-Network UC n/a 3,443 3,443
_______ ______ _____
3,580 12,959 16,539
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 1.8
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) 8:10
Average session length (minutes:seconds) 15:31
Longest session recorded (minutes:seconds) 442:32
Average number of searches completed per session 2.1
Retrievals per search - median 6.0
Retrievals per search - average 348.9
Retrievals per search - standard deviation 3555.7
Percent of searches completed with 0 results 25.5%
Percent of searches entered that are long 4.1%
Percent of long searches completed
(includes partial results) 81.9%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,812 29.7%
DISPLAY (excluding automatic displays) 2,356 38.6%
BROWSE 0 0.0%
SELECT 0 0.0%
HELP 28 0.5%
EXPLAIN 47 0.8%
SET/RESET 565 9.3%
SHOW 11 0.2%
ADD ON (AND, OR, AND NOT) 192 3.1%
LOGON or LOGOFF 818 13.4%
COMMENT 0 0.0%
SAVE 38 0.6%
USE 0 0.0%
OTHER 241 3.9%
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 963 47.6% 210 21.8% 14 79.5 307.3
TITLE WORD 398 19.7% 209 52.5% 8 82.2 282.3
EXACT TITLE 4 0.2% 1 25.0% 4 5.7 5.7
JOURNAL 53 2.6% 20 37.7% 42 2590.0 9663.8
EXACT JOURNAL 21 1.0% 9 42.9% 42 177.3 241.7
SUBJECT 39 1.9% 16 41.0% 120 514.3 644.9
EXACT SUBJECT 6 0.3% 0 0.0% 425 1102.7 1904.6
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 346 17.1% 47 13.6% 27 1628.6 8369.4
SUBFILE 0 0.0% 0 0.0% 0 0.0 0.0
FORM 26 1.3% 0 0.0% 23 46.6 79.6
DATE 45 2.2% 15 33.3% 11 80.1 149.1
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. 16 0.8% 3 18.8% 18 38.2 43.0
CONFERENCE 5 0.2% 2 40.0% 74 310.7 414.3
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 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 82 4.0% 15 18.3% 4 22.6 61.7
EXACT PE 18 0.9% 0 0.0% 2 11.3 22.5
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 0.0% 0 0.0% 1 1.0 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 220 12.2% 83 37.7% 9 55.8 188.6
Single 1,576 87.8% 383 24.3% 16 552.4 4546.3
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 1.8%
SHORT 83.1%
LONG 2.8%
TAGS 0.3%
FIELDS 4.8%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 5.8%
COMMENTS 0.0%
Other 1.5%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 7.1%
Ten most frequent errors:
1. NS command - no next screen 55.3%
2. First word of command is invalid 22.6%
3. FIND command with invalid index name 6.5%
4. DISPLAY command contains invalid word 2.6%
5. DISPLAY command-record numbers too large 1.3%
6. PS command - no previous screen 1.3%
7. DISPLAY command - no FIND results 1.1%
8. Command contains escape or arrow key 1.1%
9. Search term missing from search command 0.9%
10. Add-on search, no index name after verb 0.9%
11. All others 6.7%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 29.8%
2. INSPEC DATABASES 17.0%
3. FIND (INSPEC DBS) 10.6%
4. 1752 8.5%
5. MAIL 6.4%
6. COMMANDS (INS/PSY/ABI/BIO DBS) 6.4%
7. INSPEC BACKFILES 4.3%
8. Unrecognized term 4.3%
9. FIND (INSPEC DBS) 2.1%
10. I030 2.1%
11. All others 8.5%
Ten most frequent HELP situations:
1. Help requested from SET DB command 34.7%
2. DISPLAY command-first of >1 screen 12.0%
3. DISPLAY command - middle of >1 screen 12.0%
4. NS command - no next screen 8.0%
5. DISPLAY command-complete in one screen 8.0%
6. FIND command with invalid index name 6.7%
7. DISPLAY command - last of >1 screen 5.3%
8. First word of command is invalid 2.7%
9. 850 2.7%
10. 3 HELP commands issued from same code 1.3%
11. All others 6.7%
Ten most frequent SHOW requests:
1. HISTORY 45.5%
2. SETTINGS (INS/PSY DBS) 18.2%
3. SEARCH 18.2%
4. MAIL STATUS 18.2%
11. All others 0.0%
INSmm/dd ins MELVYL INSPEC DATABASES TELNET STATISTICS (weekly)