MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 04/27/02 through 05/03/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 34 147 181
Davis 158 0 158
Irvine 53 0 53
Los Angeles 1 58 59
Riverside 3 14 17
San Diego 12 67 79
San Francisco 14 0 14
Santa Barbara 7 16 23
Santa Cruz 1 26 27
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 37 37
Other-Network UC n/a 82 82
_______ ______ _____
283 447 730
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 15 57 769
2-4 a.m. 20 265 751
4-6 a.m. 6 26 308
6-8 a.m. 15 31 143
8-10 a.m. 65 190 1,422
10-12 a.m. 144 560 4,533
12-2 p.m. 100 425 4,448
2-4 p.m. 171 555 4,774
4-6 p.m. 102 356 4,097
6-8 p.m. 38 186 1,374
8-10 p.m. 38 80 886
10-12 p.m. 16 45 337
__________ __________ __________ _________________
Total: 730 2,776 23,842
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 93 699 792
Davis 748 0 748
Irvine 152 0 152
Los Angeles 14 196 210
Riverside 1 46 47
San Diego 26 220 246
San Francisco 61 0 61
Santa Barbara 16 46 62
Santa Cruz 0 67 67
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 166 166
Other-Network UC n/a 225 225
_______ ______ _____
1,111 1,665 2,776
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,053 5,785 6,838
Davis 6,349 0 6,349
Irvine 883 0 883
Los Angeles 505 2,257 2,762
Riverside 29 530 559
San Diego 79 2,133 2,212
San Francisco 313 0 313
Santa Barbara 104 446 550
Santa Cruz 0 499 499
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 1,688 1,688
Other-Network UC n/a 1,189 1,189
_______ ______ _____
9,315 14,527 23,842
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.4
Standard deviation in seconds 0.7
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) 6:04
Average session length (minutes:seconds) 12:33
Longest session recorded (minutes:seconds) 499:35
Average number of searches completed per session 3.8
Retrievals per search - median 5.0
Retrievals per search - average 1546.4
Retrievals per search - standard deviation 13518
Percent of searches completed with 0 results 27.7%
Percent of searches entered that are long 2.4%
Percent of long searches completed
(includes partial results) 61.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,547 33.2%
DISPLAY (excluding automatic displays) 2,798 36.5%
BROWSE 11 0.1%
SELECT 0 0.0%
HELP 113 1.5%
EXPLAIN 97 1.3%
SET/RESET 191 2.5%
SHOW 21 0.3%
ADD ON (AND, OR, AND NOT) 229 3.0%
LOGON or LOGOFF 1,149 15.0%
COMMENT 0 0.0%
SAVE 287 3.7%
USE 1 0.0%
OTHER 240 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 1,029 32.1% 186 18.1% 14 54.2 178.3
TITLE WORD 300 9.4% 68 22.7% 10 520.1 6404.4
EXACT TITLE 29 0.9% 11 37.9% 23 118.1 243.7
JOURNAL 41 1.3% 6 14.6% 250 1472.7 3900.1
EXACT JOURNAL 19 0.6% 4 21.1% 575 726.5 827.8
SUBJECT 406 12.7% 225 55.4% 860 8032.9 22202.4
EXACT SUBJECT 259 8.1% 161 62.2% 1 106.8 610.5
KEYWORD 488 15.2% 67 13.7% 70 6183.2 30487.4
FORM/PUB TYPE 7 0.2% 0 0.0% 11 7.7 4.9
DATE 369 11.5% 172 46.6% 2 49.5 424.2
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 4 0.1% 0 0.0% 7,691 7805.3 5568.0
AUTHOR AFFIL. 0 0.0% 0 0.0% 0 0.0 0.0
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 1 0.0% 0 0.0% 26 26.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
ID NUMBER 9 0.3% 0 0.0% 1 1.0 0.0
PERIODICAL 94 2.9% 25 26.6% 5 185.4 665.8
EXACT PE 4 0.1% 2 50.0% 2 1.5 0.7
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 147 4.6% 75 51.0% 1 58.4 449.3
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 522 20.7% 204 39.1% 4 498.1 5576.3
Single 1,999 79.3% 519 26.0% 29 2727.5 18139.3
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 10 90.9% 4 40.0% 7 6.7 5.4
EXACT SUBJECT 1 9.1% 1 100% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.7%
SHORT 84.3%
LONG 1.2%
TAGS 2.0%
FIELDS 4.4%
BROWSE REVIEW 0.3%
BROWSE LONG 0.1%
PERIODICALS 3.3%
COMMENTS 0.0%
Other 2.7%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.7%
Ten most frequent errors:
1. First word of command is invalid 29.0%
2. NS command - no next screen 22.4%
3. DISPLAY command - no FIND results 18.1%
4. FIND command with invalid index name 9.2%
5. PS command - no previous screen 4.9%
6. Valid command at an inappropriate time 2.4%
7. DISPLAY command contains invalid word 2.3%
8. Search term missing from search command 1.6%
9. BROWSE command with invalid index name 1.2%
10. NS of SHOW/EXP command-no next screen 0.9%
11. All others 8.0%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 36.1%
2. GUIDE 33.0%
3. FIND (PSY DB) 7.2%
4. COMMANDS (ABI/PSY DBS) 3.1%
5. FIND LOCATION 3.1%
6. INDEXES (PSY DB) 3.1%
7. LOCATIONS 2.1%
8. SEARCH (PSY DB) 2.1%
9. BROWSE (PSY DB) 2.1%
10. Unrecognized term 2.1%
11. All others 6.2%
Ten most frequent HELP situations:
1. Help requested from SET DB command 25.2%
2. First word of command is invalid 15.7%
3. FIND command with invalid index name 11.9%
4. FIND command with zero results 7.1%
5. DISPLAY command - middle of >1 screen 6.7%
6. DISPLAY command-first of >1 screen 6.2%
7. DISPLAY command - last of >1 screen 5.2%
8. FIND command retrieves >1 book 3.3%
9. DISPLAY command-complete in one screen 3.3%
10. PS command - no previous screen 2.9%
11. All others 12.4%
Ten most frequent SHOW requests:
1. HISTORY 38.9%
2. SEARCH 27.8%
3. SETTINGS (INS/PSY DBS) 11.1%
4. PSYCINFO NEWS 11.1%
5. GLOSSARY 5.6%
6. LOCAL INFORMATION 5.6%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)