MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 05/18/02 through 05/24/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 6 101 107
Davis 105 1 106
Irvine 41 0 41
Los Angeles 8 81 89
Riverside 0 9 9
San Diego 7 46 53
San Francisco 22 0 22
Santa Barbara 10 26 36
Santa Cruz 4 35 39
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 7 7
Other-Network UC n/a 68 68
_______ ______ _____
203 374 577
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 9 34 652
2-4 a.m. 17 232 899
4-6 a.m. 3 4 47
6-8 a.m. 10 22 262
8-10 a.m. 77 294 1,742
10-12 a.m. 120 513 4,077
12-2 p.m. 115 453 5,291
2-4 p.m. 104 303 4,591
4-6 p.m. 62 228 3,070
6-8 p.m. 29 146 873
8-10 p.m. 17 61 491
10-12 p.m. 14 69 202
__________ __________ __________ _________________
Total: 577 2,359 22,197
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 11 502 513
Davis 478 3 481
Irvine 129 0 129
Los Angeles 25 248 273
Riverside 0 19 19
San Diego 38 100 138
San Francisco 116 0 116
Santa Barbara 25 198 223
Santa Cruz 6 198 204
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 27 27
Other-Network UC n/a 236 236
_______ ______ _____
828 1,531 2,359
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 63 5,811 5,874
Davis 4,465 110 4,575
Irvine 995 0 995
Los Angeles 357 2,555 2,912
Riverside 0 144 144
San Diego 921 892 1,813
San Francisco 348 0 348
Santa Barbara 127 2,004 2,131
Santa Cruz 29 1,570 1,599
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 242 242
Other-Network UC n/a 1,564 1,564
_______ ______ _____
7,305 14,892 22,197
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 1.1
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) 7:11
Average session length (minutes:seconds) 13:05
Longest session recorded (minutes:seconds) 153:38
Average number of searches completed per session 4.0
Retrievals per search - median 6.0
Retrievals per search - average 539.4
Retrievals per search - standard deviation 5067.5
Percent of searches completed with 0 results 23.8%
Percent of searches entered that are long 3.3%
Percent of long searches completed
(includes partial results) 58.2%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,173 28.9%
DISPLAY (excluding automatic displays) 3,321 44.2%
BROWSE 6 0.1%
SELECT 0 0.0%
HELP 60 0.8%
EXPLAIN 42 0.6%
SET/RESET 144 1.9%
SHOW 18 0.2%
ADD ON (AND, OR, AND NOT) 186 2.5%
LOGON or LOGOFF 906 12.1%
COMMENT 0 0.0%
SAVE 482 6.4%
USE 0 0.0%
OTHER 176 2.3%
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 1,040 37.0% 190 18.3% 11 46.3 132.9
TITLE WORD 257 9.1% 86 33.5% 8 84.5 301.4
EXACT TITLE 16 0.6% 8 50.0% 13 17.9 20.7
JOURNAL 98 3.5% 25 25.5% 946 1728.5 2351.5
EXACT JOURNAL 65 2.3% 23 35.4% 337 893.8 1429.7
SUBJECT 136 4.8% 40 29.4% 600 4207.3 8913.4
EXACT SUBJECT 211 7.5% 138 65.4% 2 6.5 11.4
KEYWORD 368 13.1% 64 17.4% 32 1280.5 7049.9
FORM/PUB TYPE 9 0.3% 1 11.1% 121 627.4 931.2
DATE 393 14.0% 165 42.0% 4 42.4 438.1
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. 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 4 0.1% 0 0.0% 370 1843.0 3191.2
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 6 0.2% 0 0.0% 1 1.0 0.0
PERIODICAL 81 2.9% 6 7.4% 4 25.2 59.6
EXACT PE 2 0.1% 0 0.0% 4 3.5 3.5
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 125 4.4% 60 48.0% 2 9.0 20.5
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 523 24.4% 200 38.2% 4 52.3 407.2
Single 1,618 75.6% 338 20.9% 24 772.9 4398.4
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 6 100% 1 16.7% 2 9.6 15.5
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.0%
SHORT 87.3%
LONG 1.6%
TAGS 0.7%
FIELDS 2.7%
BROWSE REVIEW 0.1%
BROWSE LONG 0.1%
PERIODICALS 4.1%
COMMENTS 0.0%
Other 1.4%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.4%
Ten most frequent errors:
1. NS command - no next screen 26.0%
2. First word of command is invalid 22.4%
3. DISPLAY command - no FIND results 19.2%
4. FIND command with invalid index name 11.9%
5. PS command - no previous screen 3.2%
6. DISPLAY command contains invalid word 2.7%
7. Search term missing from search command 2.7%
8. Valid command at an inappropriate time 1.7%
9. DISPLAY command-record numbers too large 1.7%
10. Command contains escape or arrow key 1.4%
11. All others 7.2%
Ten most frequent EXPLAIN requests:
1. GUIDE 38.1%
2. LOCATE (INS/PSY DBS) 11.9%
3. FIND (PSY DB) 11.9%
4. INDEXES (PSY DB) 7.1%
5. Unrecognized term 7.1%
6. COMMANDS (ABI/PSY DBS) 2.4%
7. MAIL 2.4%
8. FIND LOCATION 2.4%
9. DISPLAY (INS/PSY DBS) 2.4%
10. PUBLICATION TYPE (PSY DB) 2.4%
11. All others 11.9%
Ten most frequent HELP situations:
1. Help requested from SET DB command 22.5%
2. First word of command is invalid 19.6%
3. FIND command with invalid index name 10.8%
4. DISPLAY command-first of >1 screen 7.8%
5. FIND command retrieves >1 book 5.9%
6. DISPLAY command - middle of >1 screen 5.9%
7. NS command - no next screen 4.9%
8. DISPLAY command-complete in one screen 2.9%
9. Valid command at an inappropriate time 2.0%
10. PS command - no previous screen 2.0%
11. All others 15.7%
Ten most frequent SHOW requests:
1. HISTORY 44.4%
2. MAIL STATUS 16.7%
3. PSYCINFO NEWS 11.1%
4. SEARCH 11.1%
5. SETTINGS (INS/PSY DBS) 5.6%
6. GLOSSARY 5.6%
7. MAIL SETTINGS 5.6%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)