MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 01/26/02 through 02/01/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 10 137 147
Davis 86 0 86
Irvine 45 0 45
Los Angeles 4 84 88
Riverside 3 22 25
San Diego 15 85 100
San Francisco 10 0 10
Santa Barbara 7 16 23
Santa Cruz 0 44 44
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 1 16 17
Other-Network UC n/a 151 151
_______ ______ _____
181 555 736
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 17 59 387
2-4 a.m. 8 177 356
4-6 a.m. 6 23 195
6-8 a.m. 16 63 849
8-10 a.m. 55 158 2,184
10-12 a.m. 171 544 4,424
12-2 p.m. 127 416 4,159
2-4 p.m. 169 560 5,369
4-6 p.m. 69 254 2,149
6-8 p.m. 56 221 1,574
8-10 p.m. 31 267 2,601
10-12 p.m. 11 52 714
__________ __________ __________ _________________
Total: 736 2,794 24,961
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 42 562 604
Davis 404 0 404
Irvine 127 0 127
Los Angeles 17 315 332
Riverside 32 71 103
San Diego 25 269 294
San Francisco 28 0 28
Santa Barbara 11 96 107
Santa Cruz 0 82 82
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 2 73 75
Other-Network UC n/a 638 638
_______ ______ _____
688 2,106 2,794
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 608 4,907 5,515
Davis 2,146 0 2,146
Irvine 1,368 0 1,368
Los Angeles 302 3,557 3,859
Riverside 611 1,063 1,674
San Diego 126 2,404 2,530
San Francisco 268 0 268
Santa Barbara 56 547 603
Santa Cruz 0 1,138 1,138
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 2 592 594
Other-Network UC n/a 5,266 5,266
_______ ______ _____
5,487 19,474 24,961
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.6
Standard deviation in seconds 1.4
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) 9:26
Average session length (minutes:seconds) 13:39
Longest session recorded (minutes:seconds) 167:49
Average number of searches completed per session 3.8
Retrievals per search - median 11.0
Retrievals per search - average 752.7
Retrievals per search - standard deviation 5573.6
Percent of searches completed with 0 results 22.4%
Percent of searches entered that are long 3.3%
Percent of long searches completed
(includes partial results) 72.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,491 28.3%
DISPLAY (excluding automatic displays) 3,383 38.5%
BROWSE 4 0.0%
SELECT 0 0.0%
HELP 89 1.0%
EXPLAIN 73 0.8%
SET/RESET 200 2.3%
SHOW 52 0.6%
ADD ON (AND, OR, AND NOT) 303 3.4%
LOGON or LOGOFF 1,171 13.3%
COMMENT 0 0.0%
SAVE 716 8.1%
USE 0 0.0%
OTHER 317 3.6%
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 1,032 32.5% 218 21.1% 16 53.3 186.7
TITLE WORD 310 9.8% 89 28.7% 14 218.1 1385.7
EXACT TITLE 26 0.8% 9 34.6% 1 16.7 29.5
JOURNAL 58 1.8% 15 25.9% 246 1952.9 3924.4
EXACT JOURNAL 30 0.9% 7 23.3% 387 1588.0 3358.6
SUBJECT 107 3.4% 53 49.5% 1,424 4494.7 9952.5
EXACT SUBJECT 181 5.7% 131 72.4% 2 537.7 3154.6
KEYWORD 765 24.1% 97 12.7% 40 2238.2 10605.9
FORM/PUB TYPE 87 2.7% 5 5.7% 19 36.4 40.5
DATE 385 12.1% 156 40.5% 9 27.3 44.4
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. 2 0.1% 0 0.0% 53 53.0 0.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 1 0.0% 0 0.0% 173 173.0 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 1 0.0% 0 0.0% 1 1.0 0.0
PERIODICAL 60 1.9% 6 10.0% 4 15.1 24.6
EXACT PE 12 0.4% 2 16.7% 3 17.1 26.4
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 114 3.6% 61 53.5% 3 30.9 61.4
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 510 20.7% 187 36.7% 7 41.8 263.6
Single 1,958 79.3% 405 20.7% 32 1261.4 7369.2
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 2 50.0% 1 50.0% 42 42.0 0.0
EXACT SUBJECT 2 50.0% 1 50.0% 2 2.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.5%
SHORT 89.5%
LONG 0.7%
TAGS 0.4%
FIELDS 3.0%
BROWSE REVIEW 0.1%
BROWSE LONG 0.0%
PERIODICALS 2.9%
COMMENTS 0.0%
Other 1.9%
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 27.5%
2. First word of command is invalid 24.6%
3. DISPLAY command - no FIND results 14.6%
4. FIND command with invalid index name 6.6%
5. PS command - no previous screen 3.6%
6. DISPLAY command contains invalid word 3.5%
7. Valid command at an inappropriate time 3.0%
8. Search term missing from search command 1.8%
9. Add-on search, no index name after verb 1.8%
10. Command contains escape or arrow key 1.1%
11. All others 11.9%
Ten most frequent EXPLAIN requests:
1. GUIDE 27.4%
2. LOCATE (INS/PSY DBS) 21.9%
3. FIND (PSY DB) 6.8%
4. COMMANDS (ABI/PSY DBS) 5.5%
5. DISPLAY (INS/PSY DBS) 5.5%
6. SEARCH (PSY DB) 5.5%
7. INDEXES (PSY DB) 4.1%
8. Unrecognized term 4.1%
9. LOCATE (PE DB) 4.1%
10. P145 2.7%
11. All others 12.3%
Ten most frequent HELP situations:
1. Help requested from SET DB command 27.8%
2. First word of command is invalid 15.4%
3. DISPLAY command-first of >1 screen 9.3%
4. FIND command with invalid index name 6.2%
5. FIND command with zero results 3.7%
6. DISPLAY command - middle of >1 screen 3.7%
7. NS command - no next screen 3.1%
8. PS command - no previous screen 3.1%
9. Valid command at an inappropriate time 2.5%
10. FIND command retrieves >1 book 2.5%
11. All others 22.8%
Ten most frequent SHOW requests:
1. HISTORY 81.0%
2. SETTINGS (INS/PSY DBS) 7.1%
3. SEARCH 7.1%
4. SYSTEM NEWS 2.4%
5. DISPLAY (MED/INS/PSY DBS) 2.4%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)