MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 12/30/00 through 01/05/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 24 131 155
Davis 378 2 380
Irvine 45 0 45
Los Angeles 23 142 165
Riverside 3 38 41
San Diego 6 79 85
San Francisco 67 0 67
Santa Barbara 0 38 38
Santa Cruz 2 24 26
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 1 14 15
Other-Network UC n/a 154 154
_______ ______ _____
549 622 1,171
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 161 224 3,217
2-4 a.m. 0 0 0
4-6 a.m. 13 31 636
6-8 a.m. 33 81 1,734
8-10 a.m. 88 409 6,925
10-12 a.m. 174 767 11,065
12-2 p.m. 175 600 6,193
2-4 p.m. 178 701 10,270
4-6 p.m. 114 367 3,420
6-8 p.m. 89 447 6,656
8-10 p.m. 97 398 4,510
10-12 p.m. 49 170 4,022
__________ __________ __________ _________________
Total: 1,171 4,195 58,648
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 66 443 509
Davis 1,194 3 1,197
Irvine 167 0 167
Los Angeles 115 577 692
Riverside 3 91 94
San Diego 9 306 315
San Francisco 220 0 220
Santa Barbara 0 109 109
Santa Cruz 9 161 170
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 40 40
Other-Network UC n/a 682 682
_______ ______ _____
1,783 2,412 4,195
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 692 4,418 5,110
Davis 21,982 20 22,002
Irvine 3,659 0 3,659
Los Angeles 2,258 6,481 8,739
Riverside 42 1,123 1,165
San Diego 276 3,307 3,583
San Francisco 2,795 0 2,795
Santa Barbara 0 724 724
Santa Cruz 17 1,308 1,325
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 4 449 453
Other-Network UC n/a 9,093 9,093
_______ ______ _____
31,725 26,923 58,648
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 1.3
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) 2:53
Average session length (minutes:seconds) 9:33
Longest session recorded (minutes:seconds) 207:50
Average number of searches completed per session 3.6
Retrievals per search - median 9.0
Retrievals per search - average 474.1
Retrievals per search - standard deviation 7605.9
Percent of searches completed with 0 results 20.7%
Percent of searches entered that are long 2.3%
Percent of long searches completed
(includes partial results) 68.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,778 27.1%
DISPLAY (excluding automatic displays) 5,628 40.3%
BROWSE 49 0.4%
SELECT 2 0.0%
HELP 72 0.5%
EXPLAIN 180 1.3%
SET/RESET 814 5.8%
SHOW 58 0.4%
ADD ON (AND, OR, AND NOT) 417 3.0%
LOGON or LOGOFF 1,829 13.1%
COMMENT 0 0.0%
SAVE 829 5.9%
USE 3 0.0%
OTHER 343 2.5%
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 1,500 27.3% 268 17.9% 14 59.4 189.5
TITLE WORD 260 4.7% 88 33.8% 10 89.6 366.7
EXACT TITLE 38 0.7% 5 13.2% 1 21.7 50.2
JOURNAL 74 1.3% 10 13.5% 447 9089.9 53474.5
EXACT JOURNAL 85 1.5% 12 14.1% 788 1140.6 2195.4
SUBJECT 176 3.2% 64 36.4% 210 2720.5 10617.6
EXACT SUBJECT 866 15.8% 268 30.9% 10 49.2 200.9
KEYWORD 829 15.1% 111 13.4% 58 903.7 5577.7
FORM/PUB TYPE 22 0.4% 1 4.5% 126 370.6 527.0
DATE 954 17.4% 277 29.0% 10 38.2 115.8
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. 7 0.1% 1 14.3% 21 24.7 21.4
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 26 0.5% 1 3.8% 788 519.1 324.1
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 51 0.9% 1 2.0% 1 1.0 0.0
PERIODICAL 37 0.7% 3 8.1% 3 15.0 31.8
EXACT PE 55 1.0% 5 9.1% 2 4.6 7.3
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 507 9.2% 114 22.5% 28 36.3 34.6
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 1,203 32.1% 323 26.8% 10 79.1 420.7
Single 2,545 67.9% 472 18.5% 29 791.0 10318.7
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 40 81.6% 4 10.0% 2 10.9 17.1
EXACT SUBJECT 9 18.4% 2 22.2% 1 1.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.2%
SHORT 77.2%
LONG 1.2%
TAGS 1.9%
FIELDS 10.8%
BROWSE REVIEW 0.6%
BROWSE LONG 0.4%
PERIODICALS 2.3%
COMMENTS 0.0%
Other 2.4%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 7.9%
Ten most frequent errors:
1. NS command - no next screen 25.8%
2. DISPLAY command - no FIND results 25.1%
3. First word of command is invalid 17.4%
4. FIND command with invalid index name 7.8%
5. DISPLAY command contains invalid word 3.8%
6. PS command - no previous screen 3.2%
7. Search term missing from search command 1.9%
8. Valid command at an inappropriate time 1.3%
9. Add-on search, no index name after verb 1.3%
10. DISPLAY command-record numbers too large 1.0%
11. All others 11.3%
Ten most frequent EXPLAIN requests:
1. Unrecognized term 14.4%
2. LOCATE (INS/PSY DBS) 10.0%
3. FIND (PSY DB) 10.0%
4. GUIDE 6.7%
5. MAIL 3.9%
6. Unrecognized term-reminders off 3.3%
7. COMMANDS (ABI/PSY DBS) 2.8%
8. 1337 2.8%
9. INDEXES (PSY DB) 2.2%
10. P336 2.2%
11. All others 41.7%
Ten most frequent HELP situations:
1. Help requested from SET DB command 18.7%
2. First word of command is invalid 10.3%
3. DISPLAY command - middle of >1 screen 6.0%
4. FIND command with zero results 5.6%
5. 278 5.6%
6. DISPLAY command-complete in one screen 5.2%
7. DISPLAY command-first of >1 screen 5.2%
8. 24 4.4%
9. FIND command retrieves >1 book 4.4%
10. FIND command with invalid index name 3.6%
11. All others 31.3%
Ten most frequent SHOW requests:
1. HISTORY 46.8%
2. GLOSSARY 21.3%
3. SEARCH 12.8%
4. MAIL STATUS 6.4%
5. SETTINGS (INS/PSY DBS) 4.3%
6. PSYCINFO NEWS 2.1%
7. GLOSSARY A 2.1%
8. EXPERIMENTS 2.1%
9. DISPLAY (MED/INS/PSY DBS) 2.1%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)