MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 02/24/01 through 03/02/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 64 194 258
Davis 336 2 338
Irvine 101 0 101
Los Angeles 35 139 174
Riverside 45 26 71
San Diego 21 129 150
San Francisco 69 0 69
Santa Barbara 13 31 44
Santa Cruz 39 52 91
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 5 46 51
Other-Network UC n/a 172 172
_______ ______ _____
728 791 1,519
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 17 105 1,188
2-4 a.m. 5 19 195
4-6 a.m. 155 564 1,267
6-8 a.m. 17 43 690
8-10 a.m. 121 356 2,457
10-12 a.m. 234 812 7,338
12-2 p.m. 297 904 11,805
2-4 p.m. 249 949 11,650
4-6 p.m. 194 734 8,400
6-8 p.m. 96 547 5,410
8-10 p.m. 91 421 4,636
10-12 p.m. 43 161 1,519
__________ __________ __________ _________________
Total: 1,519 5,615 56,555
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 252 756 1,008
Davis 1,187 12 1,199
Irvine 389 0 389
Los Angeles 134 472 606
Riverside 264 78 342
San Diego 74 689 763
San Francisco 277 0 277
Santa Barbara 36 100 136
Santa Cruz 125 111 236
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 22 184 206
Other-Network UC n/a 453 453
_______ ______ _____
2,760 2,855 5,615
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 3,773 10,049 13,822
Davis 10,594 90 10,684
Irvine 4,692 0 4,692
Los Angeles 3,213 2,892 6,105
Riverside 2,297 1,024 3,321
San Diego 133 3,776 3,909
San Francisco 3,357 0 3,357
Santa Barbara 90 1,356 1,446
Santa Cruz 1,836 853 2,689
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 246 1,863 2,109
Other-Network UC n/a 4,421 4,421
_______ ______ _____
30,231 26,324 56,555
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.6
Standard deviation in seconds 1.7
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) 5:44
Average session length (minutes:seconds) 11:31
Longest session recorded (minutes:seconds) 260:33
Average number of searches completed per session 3.7
Retrievals per search - median 7.0
Retrievals per search - average 3589.0
Retrievals per search - standard deviation 17599
Percent of searches completed with 0 results 24.5%
Percent of searches entered that are long 3.1%
Percent of long searches completed
(includes partial results) 69.2%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 4,967 30.2%
DISPLAY (excluding automatic displays) 6,363 38.7%
BROWSE 24 0.1%
SELECT 2 0.0%
HELP 193 1.2%
EXPLAIN 213 1.3%
SET/RESET 536 3.3%
SHOW 45 0.3%
ADD ON (AND, OR, AND NOT) 648 3.9%
LOGON or LOGOFF 2,331 14.2%
COMMENT 0 0.0%
SAVE 720 4.4%
USE 2 0.0%
OTHER 428 2.6%
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 1,988 31.8% 401 20.2% 13 52.5 172.0
TITLE WORD 532 8.5% 153 28.8% 7 62.6 170.1
EXACT TITLE 42 0.7% 20 47.6% 1 11.2 26.1
JOURNAL 163 2.6% 37 22.7% 1,784 6035.0 23523.9
EXACT JOURNAL 90 1.4% 19 21.1% 716 1745.5 2852.9
SUBJECT 339 5.4% 186 54.9% 805 7123.8 16920.0
EXACT SUBJECT 446 7.1% 347 77.8% 2 441.5 1479.3
KEYWORD 1,291 20.7% 177 13.7% 56 1793.5 11017.5
FORM/PUB TYPE 26 0.4% 1 3.8% 8 1333.6 6373.8
DATE 795 12.7% 398 50.1% 3 37.7 203.2
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. 4 0.1% 0 0.0% 24 6288.0 12543.3
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 9 0.1% 0 0.0% 146 720.2 900.1
ISSN 1 0.0% 1 100% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
ID NUMBER 172 2.8% 2 1.2% 1 1.3 1.2
PERIODICAL 64 1.0% 17 26.6% 4 82.2 376.4
EXACT PE 11 0.2% 0 0.0% 1 1.5 0.7
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 274 4.4% 182 66.4% 2 964.5 4222.7
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 1,052 21.4% 458 43.5% 4 45.9 232.9
Single 3,862 78.6% 837 21.7% 30 1399.9 9311.6
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 24 100% 6 25.0% 1 10.3 23.3
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.5%
SHORT 88.9%
LONG 1.3%
TAGS 2.1%
FIELDS 2.4%
BROWSE REVIEW 0.2%
BROWSE LONG 0.1%
PERIODICALS 1.4%
COMMENTS 0.0%
Other 1.8%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.7%
Ten most frequent errors:
1. NS command - no next screen 25.3%
2. First word of command is invalid 24.5%
3. DISPLAY command - no FIND results 18.6%
4. FIND command with invalid index name 9.0%
5. PS command - no previous screen 4.0%
6. DISPLAY command contains invalid word 3.3%
7. Search term missing from search command 1.9%
8. Valid command at an inappropriate time 1.7%
9. NS of SHOW/EXP command-no next screen 1.0%
10. DISPLAY command-record numbers too large 0.9%
11. All others 9.8%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 36.2%
2. GUIDE 18.8%
3. FIND (PSY DB) 8.9%
4. Unrecognized term 4.7%
5. MAIL 4.2%
6. INDEXES (PSY DB) 3.8%
7. COMMANDS (ABI/PSY DBS) 3.3%
8. DISPLAY (INS/PSY DBS) 2.8%
9. BROWSE (PSY DB) 1.9%
10. PUBLICATION TYPE (PSY DB) 1.4%
11. All others 14.1%
Ten most frequent HELP situations:
1. First word of command is invalid 19.0%
2. Help requested from SET DB command 19.0%
3. DISPLAY command-first of >1 screen 17.0%
4. FIND command with invalid index name 8.6%
5. DISPLAY command - middle of >1 screen 7.4%
6. FIND command with zero results 3.7%
7. NS command - no next screen 3.4%
8. PS command - no previous screen 2.0%
9. BROWSE command with invalid index name 1.7%
10. DISPLAY command - last of >1 screen 1.7%
11. All others 16.5%
Ten most frequent SHOW requests:
1. HISTORY 43.2%
2. SEARCH 25.0%
3. MAIL STATUS 18.2%
4. PSYCINFO NEWS 4.5%
5. GLOSSARY 4.5%
6. SETTINGS (INS/PSY DBS) 2.3%
7. MAIL SETTINGS 2.3%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)