MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 11/01/01 through 11/30/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 91 620 711
Davis 536 4 540
Irvine 253 0 253
Los Angeles 15 483 498
Riverside 41 109 150
San Diego 43 323 366
San Francisco 188 0 188
Santa Barbara 23 146 169
Santa Cruz 18 110 128
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 5 106 111
Other-Network UC n/a 635 635
_______ ______ _____
1,213 2,536 3,749
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 55 162 1,238
2-4 a.m. 78 1,128 4,556
4-6 a.m. 21 67 850
6-8 a.m. 85 282 2,012
8-10 a.m. 361 1,221 10,030
10-12 a.m. 676 2,049 18,872
12-2 p.m. 676 2,442 24,434
2-4 p.m. 739 2,461 24,464
4-6 p.m. 521 1,864 18,809
6-8 p.m. 251 1,035 10,488
8-10 p.m. 160 747 7,682
10-12 p.m. 126 406 4,822
__________ __________ __________ _________________
Total: 3,749 13,864 128,257
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 270 2,282 2,552
Davis 2,619 19 2,638
Irvine 914 0 914
Los Angeles 60 1,797 1,857
Riverside 150 425 575
San Diego 175 1,150 1,325
San Francisco 604 0 604
Santa Barbara 35 518 553
Santa Cruz 44 359 403
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 6 408 414
Other-Network UC n/a 2,029 2,029
_______ ______ _____
4,877 8,987 13,864
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,562 23,623 26,185
Davis 18,695 147 18,842
Irvine 8,275 0 8,275
Los Angeles 512 23,921 24,433
Riverside 1,427 3,674 5,101
San Diego 510 9,087 9,597
San Francisco 5,983 0 5,983
Santa Barbara 80 6,945 7,025
Santa Cruz 193 4,964 5,157
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 8 3,027 3,035
Other-Network UC n/a 14,624 14,624
_______ ______ _____
38,245 90,012 128,257
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 2.8
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
_________________________________________
Median session length (minutes:seconds) 8:28
Average session length (minutes:seconds) 13:30
Longest session recorded (minutes:seconds) 646:42
Average number of searches completed per session 3.7
Retrievals per search - median 6.0
Retrievals per search - average 565.9
Retrievals per search - standard deviation 6769.9
Percent of searches completed with 0 results 25.8%
Percent of searches entered that are long 2.9%
Percent of long searches completed
(includes partial results) 70.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 12,672 31.2%
DISPLAY (excluding automatic displays) 16,681 41.1%
BROWSE 66 0.2%
SELECT 20 0.0%
HELP 474 1.2%
EXPLAIN 498 1.2%
SET/RESET 1,262 3.1%
SHOW 148 0.4%
ADD ON (AND, OR, AND NOT) 1,184 2.9%
LOGON or LOGOFF 5,325 13.1%
COMMENT 0 0.0%
SAVE 1,253 3.1%
USE 0 0.0%
OTHER 1,125 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 5,426 34.4% 991 18.3% 14 63.8 242.9
TITLE WORD 1,419 9.0% 435 30.7% 7 93.0 463.6
EXACT TITLE 185 1.2% 86 46.5% 1 19.2 71.9
JOURNAL 328 2.1% 116 35.4% 161 1553.9 4959.2
EXACT JOURNAL 176 1.1% 44 25.0% 373 1367.0 2166.1
SUBJECT 847 5.4% 432 51.0% 755 4955.6 11443.8
EXACT SUBJECT 1,082 6.9% 798 73.8% 3 1671.7 6133.1
KEYWORD 3,462 22.0% 569 16.4% 31 1349.6 13555.8
FORM/PUB TYPE 64 0.4% 5 7.8% 25 300.8 905.9
DATE 1,764 11.2% 917 52.0% 5 26.6 105.2
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. 13 0.1% 0 0.0% 17 466.8 946.5
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 20 0.1% 0 0.0% 191 1060.5 1765.4
ISSN 3 0.0% 1 33.3% 746 746.0 400.2
ISBN 1 0.0% 0 0.0% 1 1.0 0.0
ID NUMBER 17 0.1% 0 0.0% 1 1.0 0.0
PERIODICAL 292 1.9% 53 18.1% 4 35.0 127.7
EXACT PE 34 0.2% 3 8.8% 3 14.4 29.0
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 623 4.0% 392 62.9% 3 82.8 537.1
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 2,505 19.9% 1,104 44.1% 5 67.8 607.5
Single 10,052 80.1% 2,202 21.9% 25 920.0 8831.2
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 64 97.0% 19 29.7% 2 6.4 11.7
EXACT SUBJECT 2 3.0% 0 0.0% 1 1.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.7%
SHORT 88.5%
LONG 1.0%
TAGS 0.7%
FIELDS 4.1%
BROWSE REVIEW 0.2%
BROWSE LONG 0.1%
PERIODICALS 2.2%
COMMENTS 0.0%
Other 1.5%
2.2 Error, EXPLAIN and HELP statistics
_______________________________________
Percent of commands that contained errors 9.9%
Ten most frequent errors:
1. NS command - no next screen 28.3%
2. First word of command is invalid 23.7%
3. DISPLAY command - no FIND results 18.3%
4. FIND command with invalid index name 8.2%
5. PS command - no previous screen 4.1%
6. DISPLAY command contains invalid word 2.7%
7. Search term missing from search command 1.7%
8. Valid command at an inappropriate time 1.5%
9. DISPLAY command-record numbers too large 1.2%
10. Add-on search, no index name after verb 1.0%
11. All others 9.3%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 22.5%
2. GUIDE 20.7%
3. FIND (PSY DB) 9.0%
4. Unrecognized term 6.2%
5. ADDON SEARCH 4.2%
6. DISPLAY (INS/PSY DBS) 4.0%
7. COMMANDS (ABI/PSY DBS) 3.8%
8. INDEXES (PSY DB) 3.2%
9. MAIL 2.2%
10. SAVE 2.0%
11. All others 22.1%
Ten most frequent HELP situations:
1. Help requested from SET DB command 20.5%
2. First word of command is invalid 15.4%
3. FIND command with invalid index name 9.4%
4. DISPLAY command-first of >1 screen 8.5%
5. DISPLAY command - middle of >1 screen 7.8%
6. FIND command with zero results 6.9%
7. FIND command retrieves >1 book 4.9%
8. DISPLAY command-complete in one screen 2.7%
9. NS command - no next screen 2.6%
10. PS command - no previous screen 1.9%
11. All others 19.4%
Ten most frequent SHOW requests:
1. HISTORY 45.6%
2. SEARCH 31.6%
3. MAIL STATUS 7.4%
4. PSYCINFO NEWS 3.7%
5. GLOSSARY 2.9%
6. MAIL SETTINGS 2.2%
7. SYSTEM NEWS 1.5%
8. DISPLAY (MED/INS/PSY DBS) 1.5%
9. UPDATE 1.5%
10. PSYCINFO LOADING STATISTICS 0.7%
11. All others 1.5%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)