MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 01/01/01 through 01/31/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 166 790 956
Davis 1,291 8 1,299
Irvine 284 0 284
Los Angeles 108 739 847
Riverside 63 179 242
San Diego 34 522 556
San Francisco 298 0 298
Santa Barbara 60 183 243
Santa Cruz 58 179 237
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 2 87 89
Other-Network UC n/a 662 662
_______ ______ _____
2,364 3,349 5,713
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 208 348 5,505
2-4 a.m. 23 96 1,097
4-6 a.m. 308 1,793 4,044
6-8 a.m. 165 434 4,552
8-10 a.m. 536 1,970 18,997
10-12 a.m. 865 3,271 35,308
12-2 p.m. 998 3,530 36,499
2-4 p.m. 1,033 3,978 42,262
4-6 p.m. 705 2,670 25,626
6-8 p.m. 375 1,355 16,864
8-10 p.m. 330 1,213 11,117
10-12 p.m. 167 658 9,472
__________ __________ __________ _________________
Total: 5,713 21,316 211,343
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 641 2,871 3,512
Davis 5,057 17 5,074
Irvine 1,097 0 1,097
Los Angeles 438 2,873 3,311
Riverside 164 672 836
San Diego 103 1,762 1,865
San Francisco 1,057 0 1,057
Santa Barbara 379 580 959
Santa Cruz 202 615 817
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 1 263 264
Other-Network UC n/a 2,524 2,524
_______ ______ _____
9,139 12,177 21,316
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 7,363 29,101 36,464
Davis 40,274 106 40,380
Irvine 11,398 0 11,398
Los Angeles 7,314 26,482 33,796
Riverside 1,726 6,148 7,874
San Diego 599 15,633 16,232
San Francisco 16,089 0 16,089
Santa Barbara 2,891 7,823 10,714
Santa Cruz 2,195 5,529 7,724
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 25 2,795 2,820
Other-Network UC n/a 27,852 27,852
_______ ______ _____
89,874 121,469 211,343
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 1.1
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) 4:58
Average session length (minutes:seconds) 11:15
Longest session recorded (minutes:seconds) 757:18
Average number of searches completed per session 3.7
Retrievals per search - median 6.0
Retrievals per search - average 570.1
Retrievals per search - standard deviation 6949.5
Percent of searches completed with 0 results 26.5%
Percent of searches entered that are long 2.4%
Percent of long searches completed
(includes partial results) 64.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 19,175 29.4%
DISPLAY (excluding automatic displays) 26,413 40.5%
BROWSE 127 0.2%
SELECT 23 0.0%
HELP 598 0.9%
EXPLAIN 720 1.1%
SET/RESET 2,575 3.9%
SHOW 236 0.4%
ADD ON (AND, OR, AND NOT) 2,138 3.3%
LOGON or LOGOFF 8,777 13.5%
COMMENT 1 0.0%
SAVE 2,727 4.2%
USE 9 0.0%
OTHER 1,846 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 7,784 30.2% 1,493 19.2% 15 60.0 260.0
TITLE WORD 2,075 8.0% 665 32.0% 11 119.0 1005.0
EXACT TITLE 210 0.8% 82 39.0% 1 20.2 79.7
JOURNAL 364 1.4% 78 21.4% 356 3508.5 25583.0
EXACT JOURNAL 234 0.9% 44 18.8% 425 1378.6 2490.6
SUBJECT 1,243 4.8% 580 46.7% 231 5178.7 17661.2
EXACT SUBJECT 2,950 11.4% 1,800 61.0% 7 83.8 542.3
KEYWORD 4,242 16.4% 656 15.5% 53 1413.2 9763.9
FORM/PUB TYPE 105 0.4% 11 10.5% 69 1725.9 6760.0
DATE 3,858 14.9% 1,960 50.8% 5 42.2 223.3
ADDED 1 0.0% 0 0.0% 21 21.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 22 0.1% 7 31.8% 35 705.4 1864.3
CONFERENCE 1 0.0% 1 100% 0 0.0 0.0
LANGUAGE 49 0.2% 2 4.1% 269 1012.0 2849.0
ISSN 3 0.0% 3 100% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
ID NUMBER 512 2.0% 1 0.2% 1 1.0 0.0
PERIODICAL 272 1.1% 71 26.1% 4 118.9 906.0
EXACT PE 137 0.5% 17 12.4% 2 4.6 6.5
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 1,744 6.8% 877 50.3% 10 66.6 747.9
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 4,949 26.1% 2,218 44.8% 6 135.3 1310.2
Single 14,048 73.9% 2,990 21.3% 26 904.2 8257.1
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 116 91.3% 37 31.9% 2 11.3 18.5
EXACT SUBJECT 11 8.7% 3 27.3% 1 1.1 0.4
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.4%
SHORT 83.6%
LONG 1.1%
TAGS 2.7%
FIELDS 5.6%
BROWSE REVIEW 0.3%
BROWSE LONG 0.2%
PERIODICALS 1.9%
COMMENTS 0.0%
Other 2.1%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.8%
Ten most frequent errors:
1. DISPLAY command - no FIND results 26.6%
2. NS command - no next screen 25.4%
3. First word of command is invalid 20.3%
4. FIND command with invalid index name 7.0%
5. DISPLAY command contains invalid word 3.6%
6. PS command - no previous screen 3.4%
7. Search term missing from search command 1.8%
8. Valid command at an inappropriate time 1.3%
9. Add-on search, no index name after verb 1.2%
10. DISPLAY command-record numbers too large 1.1%
11. All others 8.3%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 18.6%
2. GUIDE 16.2%
3. FIND (PSY DB) 8.3%
4. Unrecognized term 8.2%
5. COMMANDS (ABI/PSY DBS) 4.4%
6. INDEXES (PSY DB) 4.2%
7. MAIL 3.1%
8. DISPLAY (INS/PSY DBS) 2.9%
9. ADDON SEARCH 2.5%
10. LOCATIONS 2.1%
11. All others 29.4%
Ten most frequent HELP situations:
1. Help requested from SET DB command 19.7%
2. First word of command is invalid 13.1%
3. DISPLAY command-first of >1 screen 7.0%
4. DISPLAY command - middle of >1 screen 6.3%
5. FIND command with invalid index name 6.0%
6. FIND command with zero results 5.2%
7. FIND command retrieves >1 book 4.5%
8. DISPLAY command-complete in one screen 3.7%
9. DISPLAY command - last of >1 screen 3.4%
10. PS command - no previous screen 3.0%
11. All others 28.0%
Ten most frequent SHOW requests:
1. HISTORY 40.4%
2. SEARCH 18.8%
3. MAIL STATUS 17.4%
4. GLOSSARY 6.1%
5. PSYCINFO NEWS 5.2%
6. MAIL SETTINGS 3.8%
7. SETTINGS (INS/PSY DBS) 2.8%
8. SYSTEM NEWS 1.4%
9. DISPLAY (MED/INS/PSY DBS) 0.9%
10. PUBLICATION TYPES (PSY DB) 0.5%
11. All others 2.8%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)