MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 01/19/02 through 01/25/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 12 113 125
Davis 101 1 102
Irvine 51 0 51
Los Angeles 1 93 94
Riverside 3 17 20
San Diego 6 78 84
San Francisco 27 0 27
Santa Barbara 2 31 33
Santa Cruz 1 33 34
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 1 7 8
Other-Network UC n/a 148 148
_______ ______ _____
205 521 726
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 13 57 175
2-4 a.m. 19 298 704
4-6 a.m. 9 33 485
6-8 a.m. 20 33 274
8-10 a.m. 72 245 2,203
10-12 a.m. 154 476 3,450
12-2 p.m. 133 560 5,582
2-4 p.m. 124 647 6,272
4-6 p.m. 86 316 2,940
6-8 p.m. 47 213 2,816
8-10 p.m. 32 181 2,209
10-12 p.m. 17 86 1,325
__________ __________ __________ _________________
Total: 726 3,145 28,435
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 52 535 587
Davis 571 1 572
Irvine 224 0 224
Los Angeles 3 349 352
Riverside 52 114 166
San Diego 20 234 254
San Francisco 213 0 213
Santa Barbara 3 150 153
Santa Cruz 1 115 116
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 2 11 13
Other-Network UC n/a 495 495
_______ ______ _____
1,141 2,004 3,145
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 281 6,428 6,709
Davis 3,395 11 3,406
Irvine 2,638 0 2,638
Los Angeles 25 4,142 4,167
Riverside 395 1,274 1,669
San Diego 119 2,279 2,398
San Francisco 1,160 0 1,160
Santa Barbara 19 969 988
Santa Cruz 1 1,303 1,304
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 6 158 164
Other-Network UC n/a 3,832 3,832
_______ ______ _____
8,039 20,396 28,435
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.5
Standard deviation in seconds 0.8
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 PSYCINFO Database Detailed Statistics
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Median session length (minutes:seconds) 8:00
Average session length (minutes:seconds) 13:32
Longest session recorded (minutes:seconds) 213:55
Average number of searches completed per session 4.3
Retrievals per search - median 6.0
Retrievals per search - average 571.4
Retrievals per search - standard deviation 6491.7
Percent of searches completed with 0 results 24.9%
Percent of searches entered that are long 4.5%
Percent of long searches completed
(includes partial results) 76.9%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,828 30.4%
DISPLAY (excluding automatic displays) 3,806 40.9%
BROWSE 6 0.1%
SELECT 0 0.0%
HELP 38 0.4%
EXPLAIN 44 0.5%
SET/RESET 206 2.2%
SHOW 8 0.1%
ADD ON (AND, OR, AND NOT) 317 3.4%
LOGON or LOGOFF 1,115 12.0%
COMMENT 0 0.0%
SAVE 656 7.0%
USE 1 0.0%
OTHER 296 3.2%
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 1,382 37.9% 291 21.1% 10 61.4 273.4
TITLE WORD 285 7.8% 94 33.0% 13 136.1 405.5
EXACT TITLE 22 0.6% 10 45.5% 4 76.6 144.9
JOURNAL 71 1.9% 25 35.2% 2,175 4282.0 6111.2
EXACT JOURNAL 61 1.7% 16 26.2% 534 2122.4 3140.8
SUBJECT 118 3.2% 42 35.6% 538 4160.2 11544.6
EXACT SUBJECT 254 7.0% 183 72.0% 2 91.7 684.2
KEYWORD 704 19.3% 110 15.6% 31 1606.1 13797.2
FORM/PUB TYPE 28 0.8% 3 10.7% 21 56.8 85.6
DATE 497 13.6% 215 43.3% 4 16.3 40.5
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. 6 0.2% 1 16.7% 14 141.6 298.2
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 4 0.1% 0 0.0% 133 192.8 175.4
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 4 0.1% 0 0.0% 1 1.0 0.0
PERIODICAL 49 1.3% 12 24.5% 7 127.4 433.5
EXACT PE 10 0.3% 0 0.0% 3 3.0 2.4
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 148 4.1% 80 54.1% 2 14.1 55.6
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 669 23.9% 268 40.1% 4 44.0 222.1
Single 2,124 76.0% 458 21.6% 23 984.2 8747.3
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:
SUBJECT 6 100% 1 16.7% 1 2.4 2.2
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.9%
SHORT 87.7%
LONG 0.9%
TAGS 0.7%
FIELDS 4.7%
BROWSE REVIEW 0.1%
BROWSE LONG 0.1%
PERIODICALS 2.3%
COMMENTS 0.0%
Other 1.5%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.8%
Ten most frequent errors:
1. NS command - no next screen 32.1%
2. DISPLAY command - no FIND results 21.2%
3. First word of command is invalid 19.2%
4. FIND command with invalid index name 7.0%
5. DISPLAY command contains invalid word 3.2%
6. Valid command at an inappropriate time 2.6%
7. Search term missing from search command 2.2%
8. PS command - no previous screen 1.9%
9. 1281 1.7%
10. DISPLAY command-record numbers too large 0.8%
11. All others 8.1%
Ten most frequent EXPLAIN requests:
1. GUIDE 18.2%
2. LOCATE (INS/PSY DBS) 18.2%
3. COMMANDS (ABI/PSY DBS) 9.1%
4. INDEXES (PSY DB) 6.8%
5. FIND (PSY DB) 6.8%
6. DATABASES 6.8%
7. PUBLICATION TYPE (PSY DB) 4.5%
8. 1060 4.5%
9. MAIL 2.3%
10. DISPLAY (INS/PSY DBS) 2.3%
11. All others 20.5%
Ten most frequent HELP situations:
1. Help requested from SET DB command 20.7%
2. FIND command with zero results 18.3%
3. First word of command is invalid 9.8%
4. DISPLAY command-first of >1 screen 9.8%
5. 1281 8.5%
6. FIND command with invalid index name 6.1%
7. DISPLAY command - last of >1 screen 6.1%
8. 15 4.9%
9. DISPLAY command - middle of >1 screen 3.7%
10. NS command - no next screen 2.4%
11. All others 9.8%
Ten most frequent SHOW requests:
1. HISTORY 50.0%
2. SEARCH 37.5%
3. MAIL STATUS 12.5%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)