MELVYL PSYCINFO DATABASE 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 96 110
Davis 110 0 110
Irvine 39 0 39
Los Angeles 5 82 87
Riverside 5 12 17
San Diego 24 62 86
San Francisco 30 0 30
Santa Barbara 11 23 34
Santa Cruz 1 23 24
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 25 25
Other-Network UC n/a 146 146
_______ ______ _____
239 469 708
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 11 40 449
2-4 a.m. 21 271 976
4-6 a.m. 2 6 26
6-8 a.m. 15 32 171
8-10 a.m. 89 245 1,827
10-12 a.m. 125 463 3,418
12-2 p.m. 134 448 16,565
2-4 p.m. 138 554 5,178
4-6 p.m. 92 353 3,717
6-8 p.m. 36 141 1,996
8-10 p.m. 22 87 687
10-12 p.m. 23 83 325
__________ __________ __________ _________________
Total: 708 2,723 35,335
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 26 352 378
Davis 575 0 575
Irvine 143 0 143
Los Angeles 15 526 541
Riverside 4 29 33
San Diego 34 163 197
San Francisco 60 0 60
Santa Barbara 19 117 136
Santa Cruz 2 115 117
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 63 63
Other-Network UC n/a 480 480
_______ ______ _____
878 1,845 2,723
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 146 3,923 4,069
Davis 4,283 0 4,283
Irvine 1,238 0 1,238
Los Angeles 138 4,548 4,686
Riverside 26 294 320
San Diego 1,016 12,105 13,121
San Francisco 896 0 896
Santa Barbara 104 852 956
Santa Cruz 20 1,744 1,764
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 729 729
Other-Network UC n/a 3,273 3,273
_______ ______ _____
7,867 27,468 35,335
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.5
Standard deviation in seconds 0.9
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 PSYCINFO Database Detailed Statistics
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Median session length (minutes:seconds) 7:04
Average session length (minutes:seconds) 13:10
Longest session recorded (minutes:seconds) 320:33
Average number of searches completed per session 3.8
Retrievals per search - median 5.0
Retrievals per search - average 667.1
Retrievals per search - standard deviation 7643.2
Percent of searches completed with 0 results 25.5%
Percent of searches entered that are long 3.6%
Percent of long searches completed
(includes partial results) 68.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,485 32.8%
DISPLAY (excluding automatic displays) 2,979 39.3%
BROWSE 0 0.0%
SELECT 0 0.0%
HELP 57 0.8%
EXPLAIN 58 0.8%
SET/RESET 248 3.3%
SHOW 15 0.2%
ADD ON (AND, OR, AND NOT) 238 3.1%
LOGON or LOGOFF 1,002 13.2%
COMMENT 0 0.0%
SAVE 294 3.9%
USE 1 0.0%
OTHER 197 2.6%
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 1,172 36.9% 226 19.3% 13 54.4 168.0
TITLE WORD 336 10.6% 110 32.7% 9 89.6 488.2
EXACT TITLE 79 2.5% 19 24.0% 1 17.5 94.5
JOURNAL 44 1.4% 13 29.5% 319 2679.5 5726.9
EXACT JOURNAL 36 1.1% 10 27.8% 71 1011.0 2251.5
SUBJECT 101 3.2% 51 50.5% 366 8523.2 24735.5
EXACT SUBJECT 247 7.8% 171 69.2% 2 5.7 10.1
KEYWORD 515 16.2% 86 16.7% 36 2544.3 16721.6
FORM/PUB TYPE 9 0.3% 2 22.2% 57 335.9 604.4
DATE 416 13.1% 208 50.0% 3 49.1 465.8
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. 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 1 0.0% 0 0.0% 57 57.0 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 7 0.2% 0 0.0% 1 1.0 0.0
PERIODICAL 59 1.9% 5 8.5% 10 844.6 3055.1
EXACT PE 4 0.1% 0 0.0% 4 11.5 17.7
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 148 4.7% 82 55.4% 3 46.0 181.3
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 564 23.0% 246 43.6% 4 43.3 388.5
Single 1,890 77.0% 404 21.4% 22 1166.6 10248.5
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:
SUBJECT 0 0.0% 0 0.0% 0.0 0.0 0.0
EXACT SUBJECT 0 0.0% 0 0.0% 0.0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.8%
SHORT 87.9%
LONG 1.2%
TAGS 1.0%
FIELDS 4.3%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 2.5%
COMMENTS 0.0%
Other 1.3%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.5%
Ten most frequent errors:
1. NS command - no next screen 29.5%
2. DISPLAY command - no FIND results 22.7%
3. First word of command is invalid 20.7%
4. FIND command with invalid index name 10.0%
5. PS command - no previous screen 3.4%
6. DISPLAY command contains invalid word 2.4%
7. Search term missing from search command 2.4%
8. Valid command at an inappropriate time 1.5%
9. NS of SHOW/EXP command-no next screen 1.3%
10. Command contains escape or arrow key 1.1%
11. All others 5.1%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 37.9%
2. GUIDE 19.0%
3. FIND (PSY DB) 12.1%
4. COMMANDS (ABI/PSY DBS) 5.2%
5. INDEXES (PSY DB) 5.2%
6. PUBLICATION TYPE (PSY DB) 5.2%
7. SEARCH (PSY DB) 3.4%
8. Unrecognized term 3.4%
9. MAIL 1.7%
10. DISPLAY (INS/PSY DBS) 1.7%
11. All others 5.2%
Ten most frequent HELP situations:
1. Help requested from SET DB command 26.1%
2. First word of command is invalid 16.5%
3. DISPLAY command-first of >1 screen 11.3%
4. FIND command with invalid index name 10.4%
5. DISPLAY command - middle of >1 screen 8.7%
6. DISPLAY command - last of >1 screen 4.3%
7. Add-on without index name after verb 3.5%
8. FIND command with zero results 3.5%
9. DISPLAY command-complete in one screen 3.5%
10. NS command - no next screen 2.6%
11. All others 9.6%
Ten most frequent SHOW requests:
1. HISTORY 53.3%
2. PSYCINFO NEWS 13.3%
3. MAIL STATUS 13.3%
4. SETTINGS (INS/PSY DBS) 6.7%
5. MAIL SETTINGS 6.7%
6. SEARCH 6.7%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)