MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 02/02/02 through 02/08/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 14 111 125
Davis 81 0 81
Irvine 44 0 44
Los Angeles 1 59 60
Riverside 5 18 23
San Diego 11 63 74
San Francisco 39 0 39
Santa Barbara 4 23 27
Santa Cruz 1 37 38
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 37 37
Other-Network UC n/a 150 150
_______ ______ _____
200 498 698
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 3 11 176
2-4 a.m. 16 225 1,063
4-6 a.m. 4 8 157
6-8 a.m. 25 89 602
8-10 a.m. 63 197 1,784
10-12 a.m. 123 366 3,198
12-2 p.m. 119 462 4,947
2-4 p.m. 168 535 5,047
4-6 p.m. 98 356 3,188
6-8 p.m. 36 175 2,080
8-10 p.m. 24 98 1,350
10-12 p.m. 19 59 452
__________ __________ __________ _________________
Total: 698 2,581 24,044
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 33 508 541
Davis 380 0 380
Irvine 119 0 119
Los Angeles 5 249 254
Riverside 12 68 80
San Diego 28 191 219
San Francisco 163 0 163
Santa Barbara 6 66 72
Santa Cruz 1 153 154
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 122 122
Other-Network UC n/a 477 477
_______ ______ _____
747 1,834 2,581
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 253 4,853 5,106
Davis 3,983 0 3,983
Irvine 1,639 0 1,639
Los Angeles 13 3,061 3,074
Riverside 90 664 754
San Diego 40 1,553 1,593
San Francisco 1,284 0 1,284
Santa Barbara 2 948 950
Santa Cruz 1 769 770
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 991 991
Other-Network UC n/a 3,900 3,900
_______ ______ _____
7,305 16,739 24,044
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 1.0
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.1
2.0 PSYCINFO Database Detailed Statistics
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Median session length (minutes:seconds) 8:45
Average session length (minutes:seconds) 13:08
Longest session recorded (minutes:seconds) 321:17
Average number of searches completed per session 3.7
Retrievals per search - median 7.0
Retrievals per search - average 634.6
Retrievals per search - standard deviation 5763.7
Percent of searches completed with 0 results 23.6%
Percent of searches entered that are long 3.1%
Percent of long searches completed
(includes partial results) 69.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,273 30.7%
DISPLAY (excluding automatic displays) 2,885 39.0%
BROWSE 1 0.0%
SELECT 0 0.0%
HELP 93 1.3%
EXPLAIN 40 0.5%
SET/RESET 188 2.5%
SHOW 8 0.1%
ADD ON (AND, OR, AND NOT) 308 4.2%
LOGON or LOGOFF 1,072 14.5%
COMMENT 0 0.0%
SAVE 305 4.1%
USE 0 0.0%
OTHER 228 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 1,117 38.9% 213 19.1% 13 57.5 170.6
TITLE WORD 241 8.4% 73 30.3% 10 76.1 229.9
EXACT TITLE 19 0.7% 6 31.6% 1 6.1 8.8
JOURNAL 48 1.7% 6 12.5% 1,799 7246.9 24618.1
EXACT JOURNAL 47 1.6% 4 8.5% 770 1687.7 2666.7
SUBJECT 118 4.1% 51 43.2% 528 4779.5 10945.1
EXACT SUBJECT 211 7.4% 168 79.6% 6 22.8 34.5
KEYWORD 535 18.6% 78 14.6% 67 1842.2 10182.0
FORM/PUB TYPE 4 0.1% 0 0.0% 84 486.3 859.3
DATE 349 12.2% 190 54.4% 5 258.5 1818.5
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. 1 0.0% 0 0.0% 6 6.0 0.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 6 0.2% 0 0.0% 67 332.7 707.1
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 4 0.1% 0 0.0% 1 1.0 0.0
PERIODICAL 35 1.2% 1 2.9% 3 6.0 6.0
EXACT PE 13 0.5% 0 0.0% 2 7.4 14.0
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 121 4.2% 88 72.7% 7 37.2 72.7
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 477 21.2% 231 48.4% 5 193.6 1474.8
Single 1,774 78.8% 321 18.1% 27 1069.0 7586.4
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 1 100% 0 0.0% 6 6.0 0.0
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.1%
SHORT 88.0%
LONG 1.2%
TAGS 0.4%
FIELDS 3.2%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 2.3%
COMMENTS 0.0%
Other 1.7%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.2%
Ten most frequent errors:
1. NS command - no next screen 32.5%
2. First word of command is invalid 21.8%
3. DISPLAY command - no FIND results 21.5%
4. FIND command with invalid index name 5.8%
5. DISPLAY command contains invalid word 2.7%
6. PS command - no previous screen 2.3%
7. Valid command at an inappropriate time 1.8%
8. Add-on search, no index name after verb 1.7%
9. Search term missing from search command 1.4%
10. DISPLAY command-record numbers too large 1.2%
11. All others 7.3%
Ten most frequent EXPLAIN requests:
1. GUIDE 22.5%
2. COMMANDS (ABI/PSY DBS) 17.5%
3. LOCATE (INS/PSY DBS) 7.5%
4. INDEXES (PSY DB) 7.5%
5. FIND (PSY DB) 7.5%
6. ADDON SEARCH 7.5%
7. DISPLAY (INS/PSY DBS) 5.0%
8. SEARCH (PSY DB) 5.0%
9. DATABASES 5.0%
10. MAIL 2.5%
11. All others 12.5%
Ten most frequent HELP situations:
1. First word of command is invalid 20.3%
2. Help requested from SET DB command 19.5%
3. FIND command with invalid index name 16.5%
4. DISPLAY command-first of >1 screen 7.5%
5. PS command - no previous screen 4.5%
6. FIND command with zero results 3.8%
7. DISPLAY command-complete in one screen 3.8%
8. FIND command retrieves >1 book 3.0%
9. DISPLAY command - middle of >1 screen 3.0%
10. DISPLAY command - last of >1 screen 3.0%
11. All others 15.0%
Ten most frequent SHOW requests:
1. SEARCH 42.9%
2. HISTORY 42.9%
3. PSYCINFO NEWS 14.3%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)