MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 04/14/01 through 04/20/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 62 147 209
Davis 205 4 209
Irvine 52 0 52
Los Angeles 2 146 148
Riverside 9 52 61
San Diego 13 101 114
San Francisco 52 0 52
Santa Barbara 5 33 38
Santa Cruz 31 34 65
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 36 36
Other-Network UC n/a 148 148
_______ ______ _____
431 701 1,132
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 16 98 531
2-4 a.m. 4 23 304
4-6 a.m. 56 534 1,516
6-8 a.m. 18 104 849
8-10 a.m. 91 331 2,775
10-12 a.m. 176 501 4,552
12-2 p.m. 206 714 6,432
2-4 p.m. 226 917 8,370
4-6 p.m. 172 651 7,163
6-8 p.m. 79 319 3,221
8-10 p.m. 60 260 3,178
10-12 p.m. 28 148 1,023
__________ __________ __________ _________________
Total: 1,132 4,600 39,914
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 276 702 978
Davis 1,131 7 1,138
Irvine 179 0 179
Los Angeles 6 463 469
Riverside 70 185 255
San Diego 50 326 376
San Francisco 236 0 236
Santa Barbara 10 103 113
Santa Cruz 126 157 283
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 128 128
Other-Network UC n/a 445 445
_______ ______ _____
2,084 2,516 4,600
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,700 7,341 10,041
Davis 6,205 79 6,284
Irvine 1,659 0 1,659
Los Angeles 31 4,600 4,631
Riverside 1,043 1,470 2,513
San Diego 98 3,338 3,436
San Francisco 2,866 0 2,866
Santa Barbara 50 1,160 1,210
Santa Cruz 714 1,849 2,563
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 938 938
Other-Network UC n/a 3,773 3,773
_______ ______ _____
15,366 24,548 39,914
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 1.3
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) 8:24
Average session length (minutes:seconds) 14:11
Longest session recorded (minutes:seconds) 780:55
Average number of searches completed per session 4.0
Retrievals per search - median 5.0
Retrievals per search - average 773.4
Retrievals per search - standard deviation 6701.4
Percent of searches completed with 0 results 27.7%
Percent of searches entered that are long 2.6%
Percent of long searches completed
(includes partial results) 60.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 4,150 30.3%
DISPLAY (excluding automatic displays) 5,775 42.1%
BROWSE 23 0.2%
SELECT 0 0.0%
HELP 173 1.3%
EXPLAIN 198 1.4%
SET/RESET 395 2.9%
SHOW 64 0.5%
ADD ON (AND, OR, AND NOT) 450 3.3%
LOGON or LOGOFF 1,671 12.2%
COMMENT 0 0.0%
SAVE 431 3.1%
USE 3 0.0%
OTHER 405 3.0%
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 1,490 27.9% 301 20.2% 13 64.6 218.5
TITLE WORD 481 9.0% 142 29.5% 8 496.6 6502.9
EXACT TITLE 63 1.2% 27 42.9% 4 38.6 110.6
JOURNAL 92 1.7% 22 23.9% 382 3564.5 11612.2
EXACT JOURNAL 47 0.9% 9 19.1% 371 894.4 1289.9
SUBJECT 418 7.8% 214 51.2% 534 5103.1 13194.4
EXACT SUBJECT 517 9.7% 345 66.7% 2 253.0 1412.9
KEYWORD 1,052 19.7% 155 14.7% 51 1729.1 10068.3
FORM/PUB TYPE 10 0.2% 1 10.0% 83 766.6 1883.7
DATE 720 13.5% 370 51.4% 3 15.0 44.4
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. 5 0.1% 2 40.0% 1,009 4740.7 7340.2
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 2 0.0% 0 0.0% 237 237.0 332.3
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 39 0.7% 0 0.0% 1 1.0 0.0
PERIODICAL 89 1.7% 17 19.1% 9 54.9 253.9
EXACT PE 10 0.2% 3 30.0% 4 14.0 26.5
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 309 5.8% 157 50.8% 2 138.8 970.5
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 931 22.7% 422 45.3% 3 42.3 303.1
Single 3,170 77.3% 755 23.8% 32 1311.7 8021.2
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 20 87.0% 6 30.0% 1 6.4 11.4
EXACT SUBJECT 3 13.0% 2 66.7% 1 1.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.0%
SHORT 86.0%
LONG 1.1%
TAGS 1.4%
FIELDS 4.2%
BROWSE REVIEW 0.3%
BROWSE LONG 0.1%
PERIODICALS 2.1%
COMMENTS 0.0%
Other 1.9%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 11.2%
Ten most frequent errors:
1. NS command - no next screen 27.0%
2. First word of command is invalid 23.0%
3. DISPLAY command - no FIND results 20.4%
4. FIND command with invalid index name 7.5%
5. DISPLAY command contains invalid word 3.9%
6. PS command - no previous screen 3.1%
7. Valid command at an inappropriate time 2.0%
8. Search term missing from search command 1.4%
9. Command contains escape or arrow key 0.9%
10. DISPLAY command-record numbers too large 0.8%
11. All others 9.9%
Ten most frequent EXPLAIN requests:
1. GUIDE 20.7%
2. LOCATE (INS/PSY DBS) 17.7%
3. Unrecognized term 8.1%
4. FIND (PSY DB) 5.1%
5. MAGS TEXT 4.5%
6. COMMANDS (ABI/PSY DBS) 4.5%
7. Unrecognized term-reminders off 3.0%
8. MAIL 2.5%
9. DISPLAY (INS/PSY DBS) 2.5%
10. INDEXES (PSY DB) 2.0%
11. All others 29.3%
Ten most frequent HELP situations:
1. Help requested from SET DB command 16.4%
2. First word of command is invalid 13.7%
3. FIND command with invalid index name 10.5%
4. DISPLAY command-first of >1 screen 8.9%
5. DISPLAY command - middle of >1 screen 8.4%
6. FIND command with zero results 5.4%
7. DISPLAY command-complete in one screen 4.6%
8. FIND command retrieves >1 book 4.0%
9. PS command - no previous screen 3.5%
10. DISPLAY command - last of >1 screen 2.7%
11. All others 21.8%
Ten most frequent SHOW requests:
1. HISTORY 42.9%
2. SEARCH 30.6%
3. MAIL STATUS 10.2%
4. PSYCINFO NEWS 8.2%
5. GLOSSARY 4.1%
6. PUBLICATION TYPES (PSY DB) 2.0%
7. PSYCINFO LOADING STATISTICS 2.0%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)