MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 08/11/01 through 08/17/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 13 132 145
Davis 143 0 143
Irvine 38 0 38
Los Angeles 4 125 129
Riverside 8 17 25
San Diego 1 77 78
San Francisco 52 0 52
Santa Barbara 4 41 45
Santa Cruz 6 13 19
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 31 31
Other-Network UC n/a 116 116
_______ ______ _____
269 552 821
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 7 25 319
2-4 a.m. 16 227 836
4-6 a.m. 24 277 1,299
6-8 a.m. 13 45 1,189
8-10 a.m. 67 245 3,343
10-12 a.m. 139 402 3,795
12-2 p.m. 173 625 5,015
2-4 p.m. 167 609 4,632
4-6 p.m. 111 400 3,014
6-8 p.m. 31 158 4,385
8-10 p.m. 33 154 3,207
10-12 p.m. 40 221 2,620
__________ __________ __________ _________________
Total: 821 3,388 33,654
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 38 469 507
Davis 890 0 890
Irvine 201 0 201
Los Angeles 15 472 487
Riverside 17 87 104
San Diego 56 246 302
San Francisco 137 0 137
Santa Barbara 4 156 160
Santa Cruz 70 60 130
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 119 119
Other-Network UC n/a 351 351
_______ ______ _____
1,428 1,960 3,388
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 250 3,854 4,104
Davis 4,486 0 4,486
Irvine 2,427 0 2,427
Los Angeles 287 5,348 5,635
Riverside 320 535 855
San Diego 52 2,212 2,264
San Francisco 3,287 0 3,287
Santa Barbara 14 3,433 3,447
Santa Cruz 104 319 423
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 560 560
Other-Network UC n/a 6,166 6,166
_______ ______ _____
11,227 22,427 33,654
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.6
Standard deviation in seconds 2.6
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) 7:00
Average session length (minutes:seconds) 12:46
Longest session recorded (minutes:seconds) 471:51
Average number of searches completed per session 4.1
Retrievals per search - median 6.0
Retrievals per search - average 394.5
Retrievals per search - standard deviation 4377.3
Percent of searches completed with 0 results 23.7%
Percent of searches entered that are long 2.4%
Percent of long searches completed
(includes partial results) 70.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,084 31.7%
DISPLAY (excluding automatic displays) 4,081 42.0%
BROWSE 26 0.3%
SELECT 9 0.1%
HELP 54 0.6%
EXPLAIN 52 0.5%
SET/RESET 313 3.2%
SHOW 38 0.4%
ADD ON (AND, OR, AND NOT) 300 3.1%
LOGON or LOGOFF 1,162 12.0%
COMMENT 0 0.0%
SAVE 365 3.8%
USE 1 0.0%
OTHER 264 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 1,506 35.5% 285 18.9% 14 50.2 176.6
TITLE WORD 320 7.5% 100 31.3% 8 99.3 497.1
EXACT TITLE 13 0.3% 5 38.5% 10 17.3 20.9
JOURNAL 73 1.7% 28 38.4% 122 330.7 568.9
EXACT JOURNAL 36 0.8% 4 11.1% 309 912.8 1899.1
SUBJECT 116 2.7% 50 43.1% 182 4452.2 12557.9
EXACT SUBJECT 460 10.8% 236 51.3% 1 21.2 229.9
KEYWORD 627 14.8% 86 13.7% 45 1473.9 9599.0
FORM/PUB TYPE 7 0.2% 0 0.0% 51 71.3 75.2
DATE 697 16.4% 280 40.2% 3 35.8 172.9
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. 1 0.0% 0 0.0% 4 4.0 0.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 7 0.2% 1 14.3% 29 73.5 126.6
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 14 0.3% 0 0.0% 1 1.0 0.0
PERIODICAL 50 1.2% 7 14.0% 6 42.2 99.8
EXACT PE 10 0.2% 1 10.0% 1 4.9 7.4
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 309 7.3% 87 28.2% 3 313.1 3003.8
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 872 28.5% 329 37.7% 3 34.3 154.1
Single 2,189 71.5% 420 19.2% 25 718.6 6009.3
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 26 100% 13 50.0% 8 8.0 7.5
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.8%
SHORT 82.1%
LONG 2.1%
TAGS 3.1%
FIELDS 6.3%
BROWSE REVIEW 0.3%
BROWSE LONG 0.2%
PERIODICALS 1.8%
COMMENTS 0.0%
Other 1.4%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.3%
Ten most frequent errors:
1. NS command - no next screen 29.0%
2. DISPLAY command - no FIND results 24.8%
3. First word of command is invalid 19.2%
4. FIND command with invalid index name 6.2%
5. DISPLAY command contains invalid word 4.0%
6. PS command - no previous screen 2.7%
7. DISPLAY command-record numbers too large 1.7%
8. Valid command at an inappropriate time 1.5%
9. Search term missing from search command 1.5%
10. Add-on search, no index name after verb 1.0%
11. All others 8.2%
Ten most frequent EXPLAIN requests:
1. GUIDE 26.9%
2. COMMANDS (ABI/PSY DBS) 11.5%
3. FIND (PSY DB) 11.5%
4. LOCATE (INS/PSY DBS) 5.8%
5. DISPLAY (INS/PSY DBS) 5.8%
6. 1615 5.8%
7. MAIL 3.8%
8. SEARCH (PSY DB) 3.8%
9. P124 3.8%
10. DATABASES 3.8%
11. All others 17.3%
Ten most frequent HELP situations:
1. Help requested from SET DB command 28.3%
2. First word of command is invalid 14.2%
3. FIND command with zero results 11.3%
4. FIND command with invalid index name 8.5%
5. Multi-index search with zero results 7.5%
6. DISPLAY command-first of >1 screen 3.8%
7. DISPLAY command - middle of >1 screen 3.8%
8. DISPLAY command - last of >1 screen 2.8%
9. DISPLAY command - no FIND results 1.9%
10. NS command - no next screen 1.9%
11. All others 16.0%
Ten most frequent SHOW requests:
1. HISTORY 72.0%
2. SEARCH 8.0%
3. SETTINGS (INS/PSY DBS) 4.0%
4. PSYCINFO NEWS 4.0%
5. MAIL SETTINGS 4.0%
6. DISPLAY (MED/INS/PSY DBS) 4.0%
7. MAIL STATUS 4.0%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)