MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 11/03/01 through 11/09/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 21 169 190
Davis 155 0 155
Irvine 54 0 54
Los Angeles 7 131 138
Riverside 11 34 45
San Diego 6 97 103
San Francisco 64 0 64
Santa Barbara 10 28 38
Santa Cruz 4 32 36
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 24 24
Other-Network UC n/a 151 151
_______ ______ _____
332 666 998
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 17 54 330
2-4 a.m. 26 267 1,824
4-6 a.m. 8 18 260
6-8 a.m. 28 102 599
8-10 a.m. 83 254 2,298
10-12 a.m. 157 462 5,040
12-2 p.m. 186 544 6,100
2-4 p.m. 220 730 8,546
4-6 p.m. 119 485 5,013
6-8 p.m. 68 257 3,464
8-10 p.m. 49 176 2,324
10-12 p.m. 37 155 1,070
__________ __________ __________ _________________
Total: 998 3,504 36,868
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 70 654 724
Davis 640 0 640
Irvine 213 0 213
Los Angeles 19 422 441
Riverside 42 122 164
San Diego 39 362 401
San Francisco 201 0 201
Santa Barbara 12 96 108
Santa Cruz 5 104 109
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 46 46
Other-Network UC n/a 457 457
_______ ______ _____
1,241 2,263 3,504
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 444 7,738 8,182
Davis 5,828 0 5,828
Irvine 2,466 0 2,466
Los Angeles 162 5,829 5,991
Riverside 470 1,632 2,102
San Diego 31 3,267 3,298
San Francisco 1,779 0 1,779
Santa Barbara 28 1,778 1,806
Santa Cruz 76 1,221 1,297
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 740 740
Other-Network UC n/a 3,379 3,379
_______ ______ _____
11,284 25,584 36,868
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.4
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) 9:28
Average session length (minutes:seconds) 13:28
Longest session recorded (minutes:seconds) 187:00
Average number of searches completed per session 3.5
Retrievals per search - median 8.0
Retrievals per search - average 690.7
Retrievals per search - standard deviation 8698.7
Percent of searches completed with 0 results 23.3%
Percent of searches entered that are long 2.9%
Percent of long searches completed
(includes partial results) 75.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,202 30.4%
DISPLAY (excluding automatic displays) 4,321 41.0%
BROWSE 11 0.1%
SELECT 3 0.0%
HELP 117 1.1%
EXPLAIN 129 1.2%
SET/RESET 365 3.5%
SHOW 32 0.3%
ADD ON (AND, OR, AND NOT) 302 2.9%
LOGON or LOGOFF 1,385 13.1%
COMMENT 0 0.0%
SAVE 396 3.8%
USE 0 0.0%
OTHER 292 2.8%
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 1,387 35.6% 232 16.7% 13 63.5 226.5
TITLE WORD 400 10.3% 115 28.7% 8 91.7 328.2
EXACT TITLE 36 0.9% 15 41.7% 4 12.6 18.7
JOURNAL 75 1.9% 30 40.0% 361 4254.1 9723.6
EXACT JOURNAL 42 1.1% 11 26.2% 237 1069.3 1757.3
SUBJECT 235 6.0% 104 44.3% 605 4563.6 12682.6
EXACT SUBJECT 227 5.8% 164 72.2% 10 755.7 3345.6
KEYWORD 810 20.8% 112 13.8% 44 1907.5 18203.6
FORM/PUB TYPE 8 0.2% 1 12.5% 162 345.4 652.0
DATE 411 10.5% 194 47.2% 6 37.1 156.0
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. 3 0.1% 0 0.0% 334 608.7 560.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 14 0.4% 0 0.0% 202 913.9 918.8
ISSN 1 0.0% 0 0.0% 1,029 1029.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
ID NUMBER 8 0.2% 0 0.0% 1 1.0 0.0
PERIODICAL 104 2.7% 19 18.3% 5 34.7 112.7
EXACT PE 14 0.4% 2 14.3% 4 16.1 38.1
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 126 3.2% 82 65.1% 7 50.7 155.6
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 574 18.1% 231 40.2% 6 73.4 290.3
Single 2,602 81.9% 520 20.0% 28 1094.4 11189.5
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 10 90.9% 2 20.0% 1 3.0 3.0
EXACT SUBJECT 1 9.1% 0 0.0% 1 1.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.4%
SHORT 87.8%
LONG 1.1%
TAGS 0.4%
FIELDS 4.6%
BROWSE REVIEW 0.2%
BROWSE LONG 0.1%
PERIODICALS 3.2%
COMMENTS 0.0%
Other 1.3%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.6%
Ten most frequent errors:
1. First word of command is invalid 32.4%
2. NS command - no next screen 29.1%
3. DISPLAY command - no FIND results 13.9%
4. FIND command with invalid index name 8.2%
5. PS command - no previous screen 4.1%
6. DISPLAY command contains invalid word 3.2%
7. Valid command at an inappropriate time 1.7%
8. Search term missing from search command 0.9%
9. DISPLAY command-record numbers too large 0.6%
10. NS of SHOW/EXP command-no next screen 0.6%
11. All others 5.4%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 31.0%
2. GUIDE 19.4%
3. FIND (PSY DB) 10.9%
4. Unrecognized term 8.5%
5. COMMANDS (ABI/PSY DBS) 5.4%
6. ADDON SEARCH 3.9%
7. DISPLAY (INS/PSY DBS) 3.1%
8. SEARCH (PSY DB) 2.3%
9. INDEXES (PSY DB) 2.3%
10. LOCATIONS 1.6%
11. All others 11.6%
Ten most frequent HELP situations:
1. Help requested from SET DB command 21.1%
2. First word of command is invalid 14.2%
3. DISPLAY command - middle of >1 screen 13.4%
4. DISPLAY command-first of >1 screen 12.6%
5. FIND command with invalid index name 8.9%
6. FIND command with zero results 6.1%
7. FIND command retrieves >1 book 4.5%
8. 414 2.0%
9. Help requested from MAIL command 2.0%
10. DISPLAY command-complete in one screen 1.6%
11. All others 13.4%
Ten most frequent SHOW requests:
1. HISTORY 48.4%
2. SEARCH 22.6%
3. PSYCINFO NEWS 6.5%
4. GLOSSARY 6.5%
5. PSYCINFO LOADING STATISTICS 3.2%
6. 0160 3.2%
7. SYSTEM NEWS 3.2%
8. MAIL SETTINGS 3.2%
9. DISPLAY (MED/INS/PSY DBS) 3.2%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)