MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 05/04/02 through 05/10/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 39 142 181
Davis 144 1 145
Irvine 31 0 31
Los Angeles 1 125 126
Riverside 0 20 20
San Diego 17 51 68
San Francisco 10 0 10
Santa Barbara 3 32 35
Santa Cruz 4 36 40
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 29 29
Other-Network UC n/a 68 68
_______ ______ _____
249 504 753
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 15 121 1,222
2-4 a.m. 20 228 237
4-6 a.m. 1 5 22
6-8 a.m. 12 37 321
8-10 a.m. 62 231 2,171
10-12 a.m. 121 462 4,838
12-2 p.m. 140 596 5,313
2-4 p.m. 166 592 7,940
4-6 p.m. 113 440 3,929
6-8 p.m. 51 208 1,933
8-10 p.m. 31 150 1,701
10-12 p.m. 21 93 1,135
__________ __________ __________ _________________
Total: 753 3,163 30,762
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 216 539 755
Davis 794 1 795
Irvine 82 0 82
Los Angeles 8 494 502
Riverside 0 80 80
San Diego 54 184 238
San Francisco 28 0 28
Santa Barbara 15 81 96
Santa Cruz 0 138 138
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 157 157
Other-Network UC n/a 292 292
_______ ______ _____
1,197 1,966 3,163
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,241 5,534 7,775
Davis 4,062 0 4,062
Irvine 453 0 453
Los Angeles 173 8,369 8,542
Riverside 0 788 788
San Diego 261 2,158 2,419
San Francisco 406 0 406
Santa Barbara 113 896 1,009
Santa Cruz 0 1,694 1,694
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 1,711 1,711
Other-Network UC n/a 1,903 1,903
_______ ______ _____
7,709 23,053 30,762
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 0.9
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) 8:37
Average session length (minutes:seconds) 13:59
Longest session recorded (minutes:seconds) 268:03
Average number of searches completed per session 4.1
Retrievals per search - median 7.0
Retrievals per search - average 784.4
Retrievals per search - standard deviation 5172.9
Percent of searches completed with 0 results 27.1%
Percent of searches entered that are long 3.1%
Percent of long searches completed
(includes partial results) 64.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,906 31.8%
DISPLAY (excluding automatic displays) 3,834 42.0%
BROWSE 0 0.0%
SELECT 0 0.0%
HELP 146 1.6%
EXPLAIN 156 1.7%
SET/RESET 172 1.9%
SHOW 42 0.5%
ADD ON (AND, OR, AND NOT) 257 2.8%
LOGON or LOGOFF 1,241 13.6%
COMMENT 0 0.0%
SAVE 145 1.6%
USE 0 0.0%
OTHER 237 2.6%
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 1,215 34.7% 233 19.2% 15 48.9 123.5
TITLE WORD 293 8.4% 68 23.2% 10 519.6 4661.5
EXACT TITLE 45 1.3% 22 48.9% 1 3.9 6.8
JOURNAL 55 1.6% 18 32.7% 365 5290.4 15167.0
EXACT JOURNAL 38 1.1% 7 18.4% 314 984.4 1907.1
SUBJECT 336 9.6% 175 52.1% 1,731 7763.4 15461.2
EXACT SUBJECT 225 6.4% 163 72.4% 1 772.7 2997.6
KEYWORD 690 19.7% 116 16.8% 45 1129.1 5808.5
FORM/PUB TYPE 5 0.1% 2 40.0% 9 498.3 851.9
DATE 332 9.5% 175 52.7% 3 148.0 887.7
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 1 0.0% 0 0.0% 9,279 9279.0 0.0
AUTHOR AFFIL. 2 0.1% 0 0.0% 40 40.0 22.6
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 0 0.0% 0 0.0% 0 0.0 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 126 3.6% 24 19.0% 7 675.0 2867.5
EXACT PE 12 0.3% 3 25.0% 7 19.8 26.1
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 124 3.5% 80 64.5% 1 4.3 18.8
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 497 17.3% 215 43.3% 6 278.1 2475.2
Single 2,378 82.7% 569 23.9% 31 1262.3 6556.6
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 0 0.0% 0 0.0% 0.0 0.0 0.0
EXACT SUBJECT 0 0.0% 0 0.0% 0.0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.1%
SHORT 87.7%
LONG 0.9%
TAGS 1.1%
FIELDS 2.3%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.6%
COMMENTS 0.0%
Other 1.3%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 11.3%
Ten most frequent errors:
1. First word of command is invalid 25.6%
2. NS command - no next screen 24.5%
3. DISPLAY command - no FIND results 14.4%
4. FIND command with invalid index name 9.0%
5. PS command - no previous screen 7.3%
6. DISPLAY command contains invalid word 3.4%
7. Valid command at an inappropriate time 2.3%
8. Search term missing from search command 2.2%
9. Command contains escape or arrow key 1.7%
10. DISPLAY command-record numbers too large 1.1%
11. All others 8.5%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 31.4%
2. GUIDE 30.8%
3. COMMANDS (ABI/PSY DBS) 7.1%
4. FIND (PSY DB) 7.1%
5. INDEXES (PSY DB) 4.5%
6. Unrecognized term 3.2%
7. MAIL 2.6%
8. DISPLAY (INS/PSY DBS) 2.6%
9. SUBJECT INDEX (PSY DB) 1.9%
10. ADDON SEARCH 1.9%
11. All others 7.1%
Ten most frequent HELP situations:
1. Help requested from SET DB command 24.8%
2. FIND command with invalid index name 11.9%
3. DISPLAY command-first of >1 screen 10.9%
4. First word of command is invalid 9.6%
5. FIND command with zero results 7.3%
6. DISPLAY command - middle of >1 screen 5.6%
7. DISPLAY command-complete in one screen 4.3%
8. Valid command at an inappropriate time 3.3%
9. DISPLAY command - last of >1 screen 2.6%
10. 3 HELP commands issued from same code 2.3%
11. All others 17.2%
Ten most frequent SHOW requests:
1. SEARCH 42.5%
2. HISTORY 20.0%
3. PSYCINFO NEWS 10.0%
4. MAIL STATUS 10.0%
5. DISPLAY (MED/INS/PSY DBS) 7.5%
6. UPDATE 5.0%
7. IAC STATISTICS 2.5%
8. SETTINGS (INS/PSY DBS) 2.5%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)