MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 03/30/02 through 04/05/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 13 149 162
Davis 84 1 85
Irvine 32 0 32
Los Angeles 0 90 90
Riverside 2 48 50
San Diego 3 61 64
San Francisco 11 0 11
Santa Barbara 0 17 17
Santa Cruz 1 23 24
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 30 30
Other-Network UC n/a 103 103
_______ ______ _____
146 522 668
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 6 48 406
2-4 a.m. 18 257 751
4-6 a.m. 6 17 79
6-8 a.m. 16 35 179
8-10 a.m. 73 189 1,804
10-12 a.m. 121 391 3,268
12-2 p.m. 111 416 3,704
2-4 p.m. 120 425 4,752
4-6 p.m. 111 443 4,185
6-8 p.m. 43 216 2,551
8-10 p.m. 25 128 1,219
10-12 p.m. 18 78 444
__________ __________ __________ _________________
Total: 668 2,643 23,342
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 47 503 550
Davis 504 2 506
Irvine 124 0 124
Los Angeles 0 233 233
Riverside 9 369 378
San Diego 4 147 151
San Francisco 46 0 46
Santa Barbara 0 60 60
Santa Cruz 3 154 157
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 93 93
Other-Network UC n/a 345 345
_______ ______ _____
737 1,906 2,643
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 207 4,407 4,614
Davis 2,471 0 2,471
Irvine 906 0 906
Los Angeles 0 4,859 4,859
Riverside 259 2,164 2,423
San Diego 10 1,815 1,825
San Francisco 471 0 471
Santa Barbara 0 691 691
Santa Cruz 4 768 772
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 1,464 1,464
Other-Network UC n/a 2,846 2,846
_______ ______ _____
4,328 19,014 23,342
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 0.8
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) 7:08
Average session length (minutes:seconds) 12:33
Longest session recorded (minutes:seconds) 209:00
Average number of searches completed per session 3.9
Retrievals per search - median 5.0
Retrievals per search - average 800.7
Retrievals per search - standard deviation 6812.4
Percent of searches completed with 0 results 27.1%
Percent of searches entered that are long 4.8%
Percent of long searches completed
(includes partial results) 73.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,303 31.6%
DISPLAY (excluding automatic displays) 2,830 38.8%
BROWSE 12 0.2%
SELECT 0 0.0%
HELP 53 0.7%
EXPLAIN 38 0.5%
SET/RESET 204 2.8%
SHOW 29 0.4%
ADD ON (AND, OR, AND NOT) 340 4.7%
LOGON or LOGOFF 1,023 14.0%
COMMENT 0 0.0%
SAVE 248 3.4%
USE 0 0.0%
OTHER 224 3.1%
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 1,151 38.8% 255 22.2% 11 62.4 239.9
TITLE WORD 292 9.8% 90 30.8% 10 121.0 806.0
EXACT TITLE 27 0.9% 8 29.6% 2 11.3 17.1
JOURNAL 31 1.0% 9 29.0% 216 523.8 827.3
EXACT JOURNAL 19 0.6% 7 36.8% 1,096 2103.2 2983.8
SUBJECT 140 4.7% 64 45.7% 1,368 7701.7 13007.5
EXACT SUBJECT 256 8.6% 186 72.7% 3 104.1 466.0
KEYWORD 394 13.3% 54 13.7% 75 3317.6 15876.2
FORM/PUB TYPE 14 0.5% 0 0.0% 471 334.5 270.1
DATE 432 14.6% 210 48.6% 3 35.1 256.9
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. 1 0.0% 0 0.0% 21 21.0 0.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 10 0.3% 2 20.0% 190 612.8 778.3
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 6 0.2% 0 0.0% 1 1.0 0.0
PERIODICAL 38 1.3% 14 36.8% 3 9.5 13.4
EXACT PE 7 0.2% 1 14.3% 2 3.2 3.9
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 5.0% 85 57.4% 3 971.0 4768.8
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 541 23.8% 241 44.5% 4 47.9 181.5
Single 1,730 76.2% 412 23.8% 28 1432.2 8951.5
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 12 100% 2 16.7% 3 4.5 4.8
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.9%
SHORT 87.1%
LONG 1.1%
TAGS 1.0%
FIELDS 5.2%
BROWSE REVIEW 0.3%
BROWSE LONG 0.1%
PERIODICALS 1.4%
COMMENTS 0.0%
Other 1.8%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 11.0%
Ten most frequent errors:
1. NS command - no next screen 30.4%
2. DISPLAY command - no FIND results 22.5%
3. First word of command is invalid 18.3%
4. FIND command with invalid index name 5.1%
5. PS command - no previous screen 3.1%
6. DISPLAY command contains invalid word 2.8%
7. Search term missing from search command 2.4%
8. Add-on search, no index name after verb 2.1%
9. Valid command at an inappropriate time 2.0%
10. Command contains escape or arrow key 1.7%
11. All others 9.5%
Ten most frequent EXPLAIN requests:
1. GUIDE 26.3%
2. LOCATE (INS/PSY DBS) 21.1%
3. COMMANDS (ABI/PSY DBS) 7.9%
4. I154 5.3%
5. INDEXES (PSY DB) 5.3%
6. FIND (PSY DB) 5.3%
7. P042 5.3%
8. Unrecognized term 5.3%
9. ADDON SEARCH 5.3%
10. 1217 2.6%
11. All others 10.5%
Ten most frequent HELP situations:
1. Help requested from SET DB command 19.8%
2. First word of command is invalid 14.3%
3. DISPLAY command-first of >1 screen 9.9%
4. DISPLAY command - middle of >1 screen 9.9%
5. FIND command with zero results 6.6%
6. Add-on without index name after verb 5.5%
7. PS command - no previous screen 4.4%
8. FIND command with invalid index name 4.4%
9. DISPLAY command-complete in one screen 4.4%
10. DISPLAY command - last of >1 screen 3.3%
11. All others 17.6%
Ten most frequent SHOW requests:
1. HISTORY 74.1%
2. SETTINGS (INS/PSY DBS) 11.1%
3. PSYCINFO NEWS 7.4%
4. GLOSSARY 3.7%
5. SEARCH 3.7%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)