MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 01/06/01 through 01/12/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 40 162 202
Davis 196 2 198
Irvine 55 0 55
Los Angeles 20 152 172
Riverside 8 28 36
San Diego 6 115 121
San Francisco 57 0 57
Santa Barbara 5 56 61
Santa Cruz 6 40 46
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 1 13 14
Other-Network UC n/a 134 134
_______ ______ _____
394 702 1,096
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 16 57 1,717
2-4 a.m. 4 19 576
4-6 a.m. 71 443 667
6-8 a.m. 41 197 1,514
8-10 a.m. 103 292 2,300
10-12 a.m. 154 557 5,436
12-2 p.m. 171 748 9,728
2-4 p.m. 188 786 7,781
4-6 p.m. 168 601 5,834
6-8 p.m. 75 262 2,770
8-10 p.m. 69 256 2,007
10-12 p.m. 36 97 2,216
__________ __________ __________ _________________
Total: 1,096 4,315 42,546
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 128 497 625
Davis 1,093 5 1,098
Irvine 243 0 243
Los Angeles 91 508 599
Riverside 21 186 207
San Diego 19 347 366
San Francisco 207 0 207
Santa Barbara 88 177 265
Santa Cruz 23 116 139
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 1 36 37
Other-Network UC n/a 529 529
_______ ______ _____
1,914 2,401 4,315
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,505 4,951 6,456
Davis 3,993 18 4,011
Irvine 2,232 0 2,232
Los Angeles 1,222 5,696 6,918
Riverside 310 1,697 2,007
San Diego 62 3,232 3,294
San Francisco 3,923 0 3,923
Santa Barbara 956 2,601 3,557
Santa Cruz 83 1,202 1,285
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 21 715 736
Other-Network UC n/a 8,127 8,127
_______ ______ _____
14,307 28,239 42,546
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 0.3
2.0 PSYCINFO Database Detailed Statistics
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Median session length (minutes:seconds) 4:37
Average session length (minutes:seconds) 11:29
Longest session recorded (minutes:seconds) 500:32
Average number of searches completed per session 3.9
Retrievals per search - median 4.0
Retrievals per search - average 391.4
Retrievals per search - standard deviation 3515.6
Percent of searches completed with 0 results 30.4%
Percent of searches entered that are long 2.4%
Percent of long searches completed
(includes partial results) 66.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,907 30.6%
DISPLAY (excluding automatic displays) 5,188 40.7%
BROWSE 10 0.1%
SELECT 2 0.0%
HELP 73 0.6%
EXPLAIN 96 0.8%
SET/RESET 450 3.5%
SHOW 34 0.3%
ADD ON (AND, OR, AND NOT) 407 3.2%
LOGON or LOGOFF 1,707 13.4%
COMMENT 1 0.0%
SAVE 525 4.1%
USE 0 0.0%
OTHER 369 2.9%
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 1,528 27.0% 264 17.3% 16 65.9 219.7
TITLE WORD 354 6.3% 120 33.9% 9 156.8 872.9
EXACT TITLE 23 0.4% 7 30.4% 2 35.2 55.8
JOURNAL 100 1.8% 18 18.0% 83 1728.5 5059.9
EXACT JOURNAL 70 1.2% 10 14.3% 80 1104.2 2749.0
SUBJECT 147 2.6% 75 51.0% 400 4713.7 14474.3
EXACT SUBJECT 831 14.7% 654 78.7% 1 211.1 944.2
KEYWORD 917 16.2% 140 15.3% 34 1092.9 6425.9
FORM/PUB TYPE 25 0.4% 3 12.0% 27 586.6 2394.6
DATE 989 17.5% 675 68.3% 3 15.6 38.1
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. 10 0.2% 4 40.0% 14 290.8 655.8
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 9 0.2% 0 0.0% 269 1462.0 3696.0
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 118 2.1% 0 0.0% 1 1.0 0.0
PERIODICAL 31 0.5% 10 32.3% 3 101.0 395.6
EXACT PE 20 0.4% 4 20.0% 1 2.1 2.0
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 486 8.6% 342 70.4% 1 206.8 1796.8
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 1,257 32.5% 736 58.6% 4 108.0 1370.3
Single 2,616 67.5% 493 18.8% 27 703.0 4868.0
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 10 100% 4 40.0% 2 2.7 3.1
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.8%
SHORT 84.0%
LONG 1.1%
TAGS 3.5%
FIELDS 5.6%
BROWSE REVIEW 0.1%
BROWSE LONG 0.1%
PERIODICALS 0.9%
COMMENTS 0.0%
Other 2.0%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.8%
Ten most frequent errors:
1. DISPLAY command - no FIND results 42.6%
2. NS command - no next screen 22.5%
3. First word of command is invalid 14.1%
4. FIND command with invalid index name 5.7%
5. PS command - no previous screen 2.8%
6. DISPLAY command contains invalid word 2.2%
7. Search term missing from search command 1.4%
8. Add-on search, no index name after verb 1.3%
9. Valid command at an inappropriate time 1.1%
10. DISPLAY command-record numbers too large 0.6%
11. All others 5.6%
Ten most frequent EXPLAIN requests:
1. GUIDE 16.7%
2. FIND (PSY DB) 15.6%
3. LOCATE (INS/PSY DBS) 9.4%
4. Unrecognized term 9.4%
5. COMMANDS (ABI/PSY DBS) 6.3%
6. ADDON SEARCH 5.2%
7. DISPLAY (INS/PSY DBS) 3.1%
8. SEARCH (PSY DB) 3.1%
9. INDEXES (PSY DB) 3.1%
10. DATABASES 3.1%
11. All others 25.0%
Ten most frequent HELP situations:
1. Help requested from SET DB command 21.3%
2. First word of command is invalid 11.2%
3. DISPLAY command - middle of >1 screen 9.5%
4. FIND command with invalid index name 8.3%
5. FIND command with zero results 5.9%
6. FIND command retrieves >1 book 5.9%
7. DISPLAY command - last of >1 screen 5.3%
8. DISPLAY command-complete in one screen 4.7%
9. DISPLAY command-first of >1 screen 3.0%
10. DISPLAY command contains invalid word 2.4%
11. All others 22.5%
Ten most frequent SHOW requests:
1. HISTORY 62.5%
2. SEARCH 12.5%
3. PSYCINFO NEWS 9.4%
4. PUBLICATION TYPES (PSY DB) 3.1%
5. UCSF PASSWORDS 3.1%
6. GLOSSARY 3.1%
7. SYSTEM NEWS 3.1%
8. TIMEOUT SETTING 3.1%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)