MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 03/16/02 through 03/22/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 10 160 170
Davis 100 0 100
Irvine 25 0 25
Los Angeles 2 65 67
Riverside 2 20 22
San Diego 9 61 70
San Francisco 24 0 24
Santa Barbara 1 23 24
Santa Cruz 2 19 21
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 23 23
Other-Network UC n/a 109 109
_______ ______ _____
175 480 655
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 9 35 264
2-4 a.m. 11 217 388
4-6 a.m. 2 2 14
6-8 a.m. 16 47 689
8-10 a.m. 74 224 2,200
10-12 a.m. 130 464 4,715
12-2 p.m. 103 358 3,982
2-4 p.m. 150 623 5,246
4-6 p.m. 70 341 3,155
6-8 p.m. 42 264 2,583
8-10 p.m. 28 101 1,166
10-12 p.m. 20 38 439
__________ __________ __________ _________________
Total: 655 2,714 24,841
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 47 548 595
Davis 553 0 553
Irvine 112 0 112
Los Angeles 5 351 356
Riverside 4 211 215
San Diego 21 155 176
San Francisco 67 0 67
Santa Barbara 2 99 101
Santa Cruz 0 88 88
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 91 91
Other-Network UC n/a 360 360
_______ ______ _____
811 1,903 2,714
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 921 5,088 6,009
Davis 3,332 0 3,332
Irvine 1,607 0 1,607
Los Angeles 73 4,273 4,346
Riverside 2 703 705
San Diego 94 1,512 1,606
San Francisco 1,255 0 1,255
Santa Barbara 7 1,211 1,218
Santa Cruz 0 931 931
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 613 613
Other-Network UC n/a 3,219 3,219
_______ ______ _____
7,291 17,550 24,841
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 0.8
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) 8:24
Average session length (minutes:seconds) 14:12
Longest session recorded (minutes:seconds) 273:24
Average number of searches completed per session 4.1
Retrievals per search - median 5.0
Retrievals per search - average 310.5
Retrievals per search - standard deviation 3033.2
Percent of searches completed with 0 results 27.4%
Percent of searches entered that are long 3.4%
Percent of long searches completed
(includes partial results) 72.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,527 32.6%
DISPLAY (excluding automatic displays) 3,152 40.7%
BROWSE 0 0.0%
SELECT 0 0.0%
HELP 81 1.0%
EXPLAIN 69 0.9%
SET/RESET 180 2.3%
SHOW 25 0.3%
ADD ON (AND, OR, AND NOT) 187 2.4%
LOGON or LOGOFF 996 12.9%
COMMENT 0 0.0%
SAVE 309 4.0%
USE 1 0.0%
OTHER 218 2.8%
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 1,192 36.1% 237 19.9% 14 54.5 179.5
TITLE WORD 314 9.5% 103 32.8% 7 66.1 314.5
EXACT TITLE 21 0.6% 11 52.4% 15 11.8 9.4
JOURNAL 26 0.8% 7 26.9% 32 431.2 675.5
EXACT JOURNAL 13 0.4% 6 46.2% 280 678.6 890.8
SUBJECT 101 3.1% 48 47.5% 1,104 4019.1 8807.9
EXACT SUBJECT 214 6.5% 176 82.2% 3 9.2 12.4
KEYWORD 711 21.6% 160 22.5% 27 953.5 5950.9
FORM/PUB TYPE 11 0.3% 4 36.4% 9 69.7 101.2
DATE 479 14.5% 221 46.1% 4 17.1 40.1
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. 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 1 0.0% 0 0.0% 15 15.0 0.0
ID NUMBER 2 0.1% 0 0.0% 1 1.0 0.0
PERIODICAL 82 2.5% 19 23.2% 4 37.8 94.7
EXACT PE 5 0.2% 0 0.0% 2 4.2 4.4
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 127 3.8% 90 70.9% 3 31.0 57.6
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 661 26.4% 275 41.6% 4 17.2 37.7
Single 1,840 73.6% 436 23.7% 27 578.8 4176.5
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 0 0.0% 0 0.0% 0.0 0.0 0.0
EXACT SUBJECT 0 0.0% 0 0.0% 0.0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.0%
SHORT 89.4%
LONG 1.0%
TAGS 0.3%
FIELDS 3.9%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 3.2%
COMMENTS 0.0%
Other 1.2%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.8%
Ten most frequent errors:
1. NS command - no next screen 28.4%
2. First word of command is invalid 22.3%
3. DISPLAY command - no FIND results 20.3%
4. FIND command with invalid index name 7.0%
5. PS command - no previous screen 5.0%
6. DISPLAY command contains invalid word 2.8%
7. Valid command at an inappropriate time 2.7%
8. Search term missing from search command 1.5%
9. DISPLAY command-record numbers too large 1.1%
10. SHOW command contains invalid word 0.9%
11. All others 8.1%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 31.9%
2. GUIDE 27.5%
3. FIND (PSY DB) 8.7%
4. DISPLAY (INS/PSY DBS) 5.8%
5. Unrecognized term 4.3%
6. COMMANDS (ABI/PSY DBS) 2.9%
7. LOCATIONS 2.9%
8. INDEXES (PSY DB) 2.9%
9. P034 2.9%
10. ADDON SEARCH 2.9%
11. All others 7.2%
Ten most frequent HELP situations:
1. Help requested from SET DB command 26.7%
2. FIND command with invalid index name 14.7%
3. First word of command is invalid 10.7%
4. DISPLAY command-complete in one screen 6.0%
5. PS command - no previous screen 5.3%
6. DISPLAY command-first of >1 screen 5.3%
7. FIND command with zero results 4.7%
8. DISPLAY command - middle of >1 screen 4.7%
9. NS command - no next screen 4.0%
10. F/BR command with invalid search term 3.3%
11. All others 14.7%
Ten most frequent SHOW requests:
1. SEARCH 62.5%
2. HISTORY 16.7%
3. SETTINGS (INS/PSY DBS) 12.5%
4. PSYCINFO NEWS 8.3%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)