MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 04/20/02 through 04/26/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 43 145 188
Davis 124 3 127
Irvine 35 0 35
Los Angeles 0 115 115
Riverside 0 15 15
San Diego 11 55 66
San Francisco 22 0 22
Santa Barbara 6 19 25
Santa Cruz 1 19 20
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 1 46 47
Other-Network UC n/a 107 107
_______ ______ _____
243 524 767
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 8 32 396
2-4 a.m. 12 218 500
4-6 a.m. 4 12 160
6-8 a.m. 9 21 144
8-10 a.m. 70 220 1,658
10-12 a.m. 151 614 5,579
12-2 p.m. 138 547 4,868
2-4 p.m. 158 555 4,617
4-6 p.m. 119 424 4,778
6-8 p.m. 42 168 1,939
8-10 p.m. 33 164 2,616
10-12 p.m. 23 101 1,010
__________ __________ __________ _________________
Total: 767 3,076 28,265
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 158 469 627
Davis 713 9 722
Irvine 131 0 131
Los Angeles 0 543 543
Riverside 0 62 62
San Diego 22 182 204
San Francisco 50 0 50
Santa Barbara 7 54 61
Santa Cruz 8 50 58
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 2 239 241
Other-Network UC n/a 377 377
_______ ______ _____
1,091 1,985 3,076
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,659 3,613 5,272
Davis 4,338 9 4,347
Irvine 734 0 734
Los Angeles 0 8,022 8,022
Riverside 0 580 580
San Diego 128 1,789 1,917
San Francisco 355 0 355
Santa Barbara 2 1,231 1,233
Santa Cruz 5 493 498
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 17 1,712 1,729
Other-Network UC n/a 3,578 3,578
_______ ______ _____
7,238 21,027 28,265
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 1.0
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) 6:15
Average session length (minutes:seconds) 12:40
Longest session recorded (minutes:seconds) 246:07
Average number of searches completed per session 3.9
Retrievals per search - median 7.0
Retrievals per search - average 1285.1
Retrievals per search - standard deviation 9060.9
Percent of searches completed with 0 results 25.5%
Percent of searches entered that are long 3.7%
Percent of long searches completed
(includes partial results) 50.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,777 31.8%
DISPLAY (excluding automatic displays) 3,599 41.2%
BROWSE 5 0.1%
SELECT 5 0.1%
HELP 84 1.0%
EXPLAIN 89 1.0%
SET/RESET 189 2.2%
SHOW 16 0.2%
ADD ON (AND, OR, AND NOT) 299 3.4%
LOGON or LOGOFF 1,200 13.7%
COMMENT 0 0.0%
SAVE 246 2.8%
USE 0 0.0%
OTHER 233 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 1,296 37.7% 290 22.4% 13 54.1 148.3
TITLE WORD 259 7.5% 86 33.2% 7 300.9 1944.2
EXACT TITLE 28 0.8% 16 57.1% 7 38.3 51.0
JOURNAL 69 2.0% 19 27.5% 176 2035.6 5011.1
EXACT JOURNAL 40 1.2% 17 42.5% 116 1264.4 3250.0
SUBJECT 189 5.5% 104 55.0% 1,512 8956.5 14522.4
EXACT SUBJECT 213 6.2% 144 67.6% 2 6.2 10.8
KEYWORD 705 20.5% 90 12.8% 58 3587.1 16686.5
FORM/PUB TYPE 24 0.7% 3 12.5% 19 62.5 95.9
DATE 413 12.0% 185 44.8% 4 76.3 497.7
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% 18 18.0 0.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 9 0.3% 3 33.3% 25 236.2 482.8
ISSN 2 0.1% 1 50.0% 544 544.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
ID NUMBER 5 0.1% 0 0.0% 1 1.0 0.0
PERIODICAL 46 1.3% 12 26.1% 5 38.6 99.3
EXACT PE 15 0.4% 1 6.7% 5 13.9 17.9
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 122 3.6% 67 54.9% 2 10.6 32.1
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 564 20.8% 231 41.0% 4 74.0 430.8
Single 2,150 79.2% 497 23.1% 31 1922.5 10992.8
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 3 60.0% 0 0.0% 1 1.0 0.0
EXACT SUBJECT 2 40.0% 0 0.0% 1 1.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.0%
SHORT 89.5%
LONG 0.9%
TAGS 0.9%
FIELDS 2.5%
BROWSE REVIEW 0.2%
BROWSE LONG 0.0%
PERIODICALS 2.1%
COMMENTS 0.0%
Other 1.9%
2.2 Error, EXPLAIN and HELP statistics
_______________________________________
Percent of commands that contained errors 10.0%
Ten most frequent errors:
1. First word of command is invalid 27.9%
2. NS command - no next screen 27.6%
3. DISPLAY command - no FIND results 15.4%
4. FIND command with invalid index name 8.0%
5. PS command - no previous screen 6.7%
6. DISPLAY command contains invalid word 2.6%
7. Search term missing from search command 2.4%
8. Valid command at an inappropriate time 1.7%
9. BROWSE command with invalid index name 0.8%
10. Command contains escape or arrow key 0.8%
11. All others 6.2%
Ten most frequent EXPLAIN requests:
1. GUIDE 40.4%
2. LOCATE (INS/PSY DBS) 22.5%
3. FIND (PSY DB) 9.0%
4. DATABASES 4.5%
5. MAIL 3.4%
6. INDEXES (PSY DB) 3.4%
7. COMMANDS (ABI/PSY DBS) 2.2%
8. FIND LOCATION 2.2%
9. SEARCH (PSY DB) 2.2%
10. DATE (PSY DB) 2.2%
11. All others 7.9%
Ten most frequent HELP situations:
1. Help requested from SET DB command 29.5%
2. First word of command is invalid 19.7%
3. FIND command with zero results 9.2%
4. DISPLAY command-first of >1 screen 8.1%
5. FIND command with invalid index name 6.9%
6. DISPLAY command - middle of >1 screen 5.8%
7. DISPLAY command - last of >1 screen 5.2%
8. NS command - no next screen 1.7%
9. F/BR command with invalid search term 1.7%
10. BROWSE command with invalid index name 1.7%
11. All others 10.4%
Ten most frequent SHOW requests:
1. HISTORY 75.0%
2. SETTINGS (INS/PSY DBS) 6.3%
3. FORM NAMES (PSY DB) 6.3%
4. PSYCINFO NEWS 6.3%
5. SEARCH 6.3%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)