MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 03/24/01 through 03/30/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 35 190 225
Davis 200 0 200
Irvine 62 0 62
Los Angeles 3 120 123
Riverside 3 35 38
San Diego 10 86 96
San Francisco 129 0 129
Santa Barbara 3 38 41
Santa Cruz 2 28 30
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 5 20 25
Other-Network UC n/a 133 133
_______ ______ _____
452 650 1,102
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 11 88 654
2-4 a.m. 4 17 1,253
4-6 a.m. 113 621 1,662
6-8 a.m. 18 59 1,398
8-10 a.m. 119 396 3,758
10-12 a.m. 177 566 4,943
12-2 p.m. 181 692 5,360
2-4 p.m. 221 867 6,890
4-6 p.m. 121 586 4,919
6-8 p.m. 61 247 3,482
8-10 p.m. 45 194 5,494
10-12 p.m. 31 244 2,637
__________ __________ __________ _________________
Total: 1,102 4,577 42,450
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 116 706 822
Davis 1,121 0 1,121
Irvine 163 0 163
Los Angeles 15 439 454
Riverside 15 293 308
San Diego 19 386 405
San Francisco 534 0 534
Santa Barbara 6 111 117
Santa Cruz 3 141 144
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 8 88 96
Other-Network UC n/a 413 413
_______ ______ _____
2,000 2,577 4,577
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,027 6,544 7,571
Davis 4,953 0 4,953
Irvine 1,480 0 1,480
Los Angeles 148 8,278 8,426
Riverside 352 1,268 1,620
San Diego 53 3,563 3,616
San Francisco 6,861 0 6,861
Santa Barbara 14 2,118 2,132
Santa Cruz 5 1,259 1,264
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 104 640 744
Other-Network UC n/a 3,783 3,783
_______ ______ _____
14,997 27,453 42,450
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 1.2
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) 5:41
Average session length (minutes:seconds) 11:45
Longest session recorded (minutes:seconds) 200:10
Average number of searches completed per session 4.1
Retrievals per search - median 5.0
Retrievals per search - average 675.4
Retrievals per search - standard deviation 6512.5
Percent of searches completed with 0 results 26.1%
Percent of searches entered that are long 2.9%
Percent of long searches completed
(includes partial results) 65.2%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 4,036 32.1%
DISPLAY (excluding automatic displays) 5,029 40.0%
BROWSE 26 0.2%
SELECT 0 0.0%
HELP 71 0.6%
EXPLAIN 89 0.7%
SET/RESET 438 3.5%
SHOW 36 0.3%
ADD ON (AND, OR, AND NOT) 541 4.3%
LOGON or LOGOFF 1,628 13.0%
COMMENT 0 0.0%
SAVE 358 2.9%
USE 0 0.0%
OTHER 334 2.7%
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 1,908 35.5% 390 20.4% 14 51.7 136.1
TITLE WORD 444 8.3% 138 31.1% 7 139.5 698.3
EXACT TITLE 59 1.1% 31 52.5% 1 43.5 122.2
JOURNAL 84 1.6% 21 25.0% 291 1325.0 2550.7
EXACT JOURNAL 31 0.6% 11 35.5% 883 1157.9 861.5
SUBJECT 280 5.2% 104 37.1% 80 3621.4 9741.7
EXACT SUBJECT 519 9.7% 343 66.1% 2 440.2 2480.8
KEYWORD 743 13.8% 110 14.8% 39 2847.1 16081.0
FORM/PUB TYPE 7 0.1% 0 0.0% 36 54.4 50.0
DATE 766 14.2% 385 50.3% 2 12.4 34.8
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. 3 0.1% 0 0.0% 11 13.0 13.1
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 12 0.2% 1 8.3% 36 134.6 249.1
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 89 1.7% 0 0.0% 1 1.0 0.0
PERIODICAL 79 1.5% 8 10.1% 4 21.0 36.5
EXACT PE 3 0.1% 2 66.7% 1 1.0 0.0
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 349 6.5% 164 47.0% 2 240.6 2858.5
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 1,038 26.0% 472 45.5% 3 88.8 1635.3
Single 2,954 74.0% 602 20.4% 26 1146.6 8864.2
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 26 100% 8 30.8% 3 9.2 16.7
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.7%
SHORT 84.1%
LONG 1.3%
TAGS 2.6%
FIELDS 6.2%
BROWSE REVIEW 0.3%
BROWSE LONG 0.1%
PERIODICALS 2.1%
COMMENTS 0.0%
Other 1.5%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.1%
Ten most frequent errors:
1. DISPLAY command - no FIND results 28.4%
2. NS command - no next screen 26.2%
3. First word of command is invalid 19.2%
4. FIND command with invalid index name 6.9%
5. PS command - no previous screen 4.0%
6. DISPLAY command contains invalid word 2.7%
7. Search term missing from search command 2.2%
8. Add-on search, no index name after verb 1.4%
9. DISPLAY command-record numbers too large 1.1%
10. Command contains escape or arrow key 1.1%
11. All others 6.9%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 23.6%
2. GUIDE 19.1%
3. COMMANDS (ABI/PSY DBS) 7.9%
4. INDEXES (PSY DB) 6.7%
5. MAIL 5.6%
6. FIND LOCATION 4.5%
7. FIND (PSY DB) 4.5%
8. DISPLAY (INS/PSY DBS) 3.4%
9. FORMS (PSY DB) 2.2%
10. Unrecognized term 2.2%
11. All others 20.2%
Ten most frequent HELP situations:
1. Help requested from SET DB command 21.3%
2. DISPLAY command-first of >1 screen 13.1%
3. First word of command is invalid 11.9%
4. DISPLAY command - middle of >1 screen 7.5%
5. NS command - no next screen 6.9%
6. FIND command with invalid index name 6.3%
7. FIND command with zero results 5.0%
8. Add-on without index name after verb 3.1%
9. MAIL command entered w/o email address 3.1%
10. DISPLAY command - last of >1 screen 2.5%
11. All others 19.4%
Ten most frequent SHOW requests:
1. HISTORY 60.6%
2. SEARCH 12.1%
3. MAIL STATUS 12.1%
4. SETTINGS (INS/PSY DBS) 3.0%
5. PSYCINFO NEWS 3.0%
6. PSYCINFO LOADING STATISTICS 3.0%
7. SYSTEM NEWS 3.0%
8. MAIL SETTINGS 3.0%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)