MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 09/15/01 through 09/21/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 19 122 141
Davis 78 0 78
Irvine 36 0 36
Los Angeles 7 111 118
Riverside 5 14 19
San Diego 2 106 108
San Francisco 38 0 38
Santa Barbara 3 54 57
Santa Cruz 2 38 40
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 31 31
Other-Network UC n/a 131 131
_______ ______ _____
190 607 797
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 21 79 1,436
2-4 a.m. 6 31 367
4-6 a.m. 5 12 458
6-8 a.m. 17 57 184
8-10 a.m. 90 273 1,529
10-12 a.m. 135 432 3,822
12-2 p.m. 142 495 4,764
2-4 p.m. 181 561 5,187
4-6 p.m. 104 444 3,917
6-8 p.m. 35 135 1,559
8-10 p.m. 40 141 1,202
10-12 p.m. 21 129 841
__________ __________ __________ _________________
Total: 797 2,789 25,266
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 77 343 420
Davis 302 0 302
Irvine 228 0 228
Los Angeles 16 363 379
Riverside 11 33 44
San Diego 18 362 380
San Francisco 114 0 114
Santa Barbara 3 249 252
Santa Cruz 13 104 117
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 1 114 115
Other-Network UC n/a 438 438
_______ ______ _____
783 2,006 2,789
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 229 3,252 3,481
Davis 3,013 0 3,013
Irvine 3,189 0 3,189
Los Angeles 131 4,260 4,391
Riverside 94 197 291
San Diego 7 2,189 2,196
San Francisco 1,053 0 1,053
Santa Barbara 4 3,735 3,739
Santa Cruz 125 1,007 1,132
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 660 660
Other-Network UC n/a 2,121 2,121
_______ ______ _____
7,845 17,421 25,266
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.4
Standard deviation in seconds 1.4
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) 8:41
Average session length (minutes:seconds) 13:55
Longest session recorded (minutes:seconds) 317:49
Average number of searches completed per session 3.5
Retrievals per search - median 10.0
Retrievals per search - average 498.1
Retrievals per search - standard deviation 3927.0
Percent of searches completed with 0 results 20.8%
Percent of searches entered that are long 3.1%
Percent of long searches completed
(includes partial results) 67.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,490 29.8%
DISPLAY (excluding automatic displays) 3,281 39.3%
BROWSE 2 0.0%
SELECT 1 0.0%
HELP 53 0.6%
EXPLAIN 77 0.9%
SET/RESET 269 3.2%
SHOW 39 0.5%
ADD ON (AND, OR, AND NOT) 299 3.6%
LOGON or LOGOFF 1,082 13.0%
COMMENT 0 0.0%
SAVE 493 5.9%
USE 0 0.0%
OTHER 260 3.1%
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 1,258 45.4% 231 18.4% 15 69.8 203.7
TITLE WORD 282 10.2% 76 26.9% 10 71.8 228.4
EXACT TITLE 22 0.8% 14 63.6% 6 7.9 7.4
JOURNAL 31 1.1% 12 38.7% 126 1000.7 2629.3
EXACT JOURNAL 166 6.0% 47 28.3% 302 755.5 1246.4
SUBJECT 137 4.9% 80 58.4% 2,788 7655.8 11740.8
EXACT SUBJECT 2 0.1% 1 50.0% 484 484.0 0.0
KEYWORD 681 24.6% 107 15.7% 36 1006.6 6872.6
FORM/PUB TYPE 2 0.1% 0 0.0% 3 3.0 2.8
DATE 136 4.9% 30 22.1% 3 12.2 22.0
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 0 0.0% 0 0.0% 0 0.0 0.0
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 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 24 0.9% 1 4.2% 3 15.0 30.3
EXACT PE 2 0.1% 0 0.0% 12 11.5 7.8
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 25 0.9% 2 8.0% 21 360.6 873.4
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 296 12.0% 63 21.3% 5 38.6 225.0
Single 2,171 88.0% 472 21.7% 33 707.5 4749.7
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 2 100% 1 50.0% 3 3.0 0.0
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.0%
SHORT 89.6%
LONG 1.0%
TAGS 0.5%
FIELDS 3.3%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 1.2%
COMMENTS 0.0%
Other 2.3%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 7.4%
Ten most frequent errors:
1. NS command - no next screen 40.5%
2. First word of command is invalid 24.0%
3. FIND command with invalid index name 11.0%
4. PS command - no previous screen 5.1%
5. DISPLAY command contains invalid word 3.9%
6. Add-on search, no index name after verb 1.8%
7. DISPLAY command-record numbers too large 1.7%
8. Search term missing from search command 1.7%
9. Valid command at an inappropriate time 1.5%
10. DISPLAY command - no FIND results 1.5%
11. All others 7.3%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 27.3%
2. GUIDE 23.4%
3. COMMANDS (ABI/PSY DBS) 13.0%
4. Unrecognized term 7.8%
5. FIND (PSY DB) 6.5%
6. DATABASES 3.9%
7. MAIL 2.6%
8. INDEXES (PSY DB) 2.6%
9. ABI TEXT 1.3%
10. DISPLAY (INS/PSY DBS) 1.3%
11. All others 10.4%
Ten most frequent HELP situations:
1. Help requested from SET DB command 37.7%
2. DISPLAY command-first of >1 screen 15.4%
3. First word of command is invalid 11.5%
4. FIND command with zero results 6.9%
5. FIND command retrieves >1 book 6.9%
6. DISPLAY command - last of >1 screen 6.2%
7. FIND command with invalid index name 3.1%
8. DISPLAY command - middle of >1 screen 3.1%
9. FIND command retrieves 1 book 1.5%
10. DISPLAY command-complete in one screen 1.5%
11. All others 6.2%
Ten most frequent SHOW requests:
1. SEARCH 53.8%
2. HISTORY 28.2%
3. MAIL STATUS 10.3%
4. PSYCINFO NEWS 2.6%
5. TIMEOUT SETTING 2.6%
6. MAIL SETTINGS 2.6%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)