MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 06/15/02 through 06/21/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 6 68 74
Davis 83 0 83
Irvine 16 0 16
Los Angeles 2 46 48
Riverside 1 9 10
San Diego 6 53 59
San Francisco 9 0 9
Santa Barbara 0 30 30
Santa Cruz 0 7 7
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 10 10
Other-Network UC n/a 99 99
_______ ______ _____
123 322 445
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 12 30 67
2-4 a.m. 14 226 722
4-6 a.m. 3 13 22
6-8 a.m. 9 28 245
8-10 a.m. 50 176 1,664
10-12 a.m. 109 571 3,083
12-2 p.m. 75 336 1,913
2-4 p.m. 82 353 3,064
4-6 p.m. 45 183 2,344
6-8 p.m. 24 132 725
8-10 p.m. 13 206 816
10-12 p.m. 9 52 192
__________ __________ __________ _________________
Total: 445 2,306 14,857
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 16 272 288
Davis 823 0 823
Irvine 36 0 36
Los Angeles 6 225 231
Riverside 0 38 38
San Diego 17 200 217
San Francisco 26 0 26
Santa Barbara 0 214 214
Santa Cruz 0 31 31
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 27 27
Other-Network UC n/a 375 375
_______ ______ _____
924 1,382 2,306
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 179 2,618 2,797
Davis 1,903 0 1,903
Irvine 323 0 323
Los Angeles 43 1,795 1,838
Riverside 0 246 246
San Diego 176 1,308 1,484
San Francisco 30 0 30
Santa Barbara 0 2,033 2,033
Santa Cruz 0 291 291
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 1,167 1,167
Other-Network UC n/a 2,745 2,745
_______ ______ _____
2,654 12,203 14,857
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.8
Standard deviation in seconds 2.3
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
_________________________________________
Median session length (minutes:seconds) 7:01
Average session length (minutes:seconds) 14:10
Longest session recorded (minutes:seconds) 343:16
Average number of searches completed per session 5.1
Retrievals per search - median 9.0
Retrievals per search - average 698.2
Retrievals per search - standard deviation 7572.5
Percent of searches completed with 0 results 24.0%
Percent of searches entered that are long 5.6%
Percent of long searches completed
(includes partial results) 81.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,105 36.9%
DISPLAY (excluding automatic displays) 2,124 37.2%
BROWSE 5 0.1%
SELECT 2 0.0%
HELP 27 0.5%
EXPLAIN 14 0.2%
SET/RESET 232 4.1%
SHOW 12 0.2%
ADD ON (AND, OR, AND NOT) 200 3.5%
LOGON or LOGOFF 690 12.1%
COMMENT 0 0.0%
SAVE 173 3.0%
USE 0 0.0%
OTHER 133 2.3%
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 820 26.1% 186 22.7% 15 78.4 236.7
TITLE WORD 221 7.0% 54 24.4% 43 832.4 2882.6
EXACT TITLE 5 0.2% 2 40.0% 1 3.0 3.5
JOURNAL 21 0.7% 2 9.5% 240 2101.5 4966.2
EXACT JOURNAL 114 3.6% 6 5.3% 587 4352.3 22083.7
SUBJECT 104 3.3% 20 19.2% 622 4383.0 12550.1
EXACT SUBJECT 211 6.7% 142 67.3% 2 10.0 25.6
KEYWORD 468 14.9% 90 19.2% 29 1300.0 10718.6
FORM/PUB TYPE 1 0.0% 0 0.0% 50 50.0 0.0
DATE 683 21.7% 211 30.9% 33 220.7 1065.7
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% 241 241.0 339.4
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 1 0.0% 0 0.0% 76 76.0 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 20 0.6% 1 5.0% 7 100.9 386.1
EXACT PE 5 0.2% 0 0.0% 4 6.4 7.3
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 464 14.7% 106 22.8% 39 340.5 2214.9
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 835 40.1% 239 28.6% 28 405.8 2186.8
Single 1,245 59.9% 276 22.2% 27 1206.4 10592.1
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 5 100% 0 0.0% 1 5.6 6.8
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.9%
SHORT 88.3%
LONG 0.4%
TAGS 1.3%
FIELDS 4.3%
BROWSE REVIEW 0.2%
BROWSE LONG 0.1%
PERIODICALS 1.6%
COMMENTS 0.0%
Other 0.9%
2.2 Error, EXPLAIN and HELP statistics
_______________________________________
Percent of commands that contained errors 9.3%
Ten most frequent errors:
1. NS command - no next screen 26.3%
2. DISPLAY command - no FIND results 25.4%
3. First word of command is invalid 18.4%
4. FIND command with invalid index name 10.9%
5. PS command - no previous screen 2.2%
6. DISPLAY command contains invalid word 1.9%
7. Search term missing from search command 1.7%
8. Valid command at an inappropriate time 1.5%
9. Command contains escape or arrow key 1.4%
10. 1281 1.2%
11. All others 9.0%
Ten most frequent EXPLAIN requests:
1. GUIDE 21.4%
2. FIND (PSY DB) 21.4%
3. LOCATE (INS/PSY DBS) 14.3%
4. MAGS TEXT 7.1%
5. COMMANDS (ABI/PSY DBS) 7.1%
6. P031 7.1%
7. SUBJECT INDEX (PSY DB) 7.1%
8. 1189 7.1%
9. LOCATE (PE DB) 7.1%
11. All others 0.0%
Ten most frequent HELP situations:
1. FIND command with invalid index name 24.4%
2. Help requested from SET DB command 17.1%
3. FIND command with zero results 9.8%
4. DISPLAY command-complete in one screen 9.8%
5. First word of command is invalid 7.3%
6. 3 HELP commands issued from same code 4.9%
7. SET DB command entered w/o modifier 2.4%
8. 15 2.4%
9. DISPLAY command - middle of >1 screen 2.4%
10. DISPLAY command - last of >1 screen 2.4%
11. All others 17.1%
Ten most frequent SHOW requests:
1. HISTORY 70.0%
2. SETTINGS (INS/PSY DBS) 20.0%
3. SEARCH 10.0%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)