MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 02/16/02 through 02/22/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 15 140 155
Davis 111 1 112
Irvine 55 0 55
Los Angeles 2 93 95
Riverside 3 26 29
San Diego 7 61 68
San Francisco 39 0 39
Santa Barbara 8 33 41
Santa Cruz 1 38 39
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 14 14
Other-Network UC n/a 150 150
_______ ______ _____
241 556 797
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 12 83 442
2-4 a.m. 13 228 1,447
4-6 a.m. 14 54 993
6-8 a.m. 30 78 1,528
8-10 a.m. 92 312 2,306
10-12 a.m. 147 603 4,422
12-2 p.m. 138 492 3,344
2-4 p.m. 169 539 6,199
4-6 p.m. 94 400 4,723
6-8 p.m. 44 121 1,129
8-10 p.m. 29 114 1,152
10-12 p.m. 15 42 383
__________ __________ __________ _________________
Total: 797 3,066 28,068
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 45 484 529
Davis 571 2 573
Irvine 236 0 236
Los Angeles 3 414 417
Riverside 11 134 145
San Diego 9 200 209
San Francisco 138 0 138
Santa Barbara 18 101 119
Santa Cruz 3 118 121
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 55 55
Other-Network UC n/a 524 524
_______ ______ _____
1,034 2,032 3,066
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 252 7,182 7,434
Davis 4,275 2 4,277
Irvine 2,064 0 2,064
Los Angeles 18 4,140 4,158
Riverside 55 1,232 1,287
San Diego 148 2,351 2,499
San Francisco 612 0 612
Santa Barbara 62 901 963
Santa Cruz 13 821 834
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 348 348
Other-Network UC n/a 3,592 3,592
_______ ______ _____
7,499 20,569 28,068
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 0.9
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) 7:52
Average session length (minutes:seconds) 14:39
Longest session recorded (minutes:seconds) 279:18
Average number of searches completed per session 3.8
Retrievals per search - median 6.0
Retrievals per search - average 446.0
Retrievals per search - standard deviation 4343.1
Percent of searches completed with 0 results 24.5%
Percent of searches entered that are long 3.2%
Percent of long searches completed
(includes partial results) 66.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,772 30.2%
DISPLAY (excluding automatic displays) 3,735 40.7%
BROWSE 7 0.1%
SELECT 2 0.0%
HELP 53 0.6%
EXPLAIN 61 0.7%
SET/RESET 220 2.4%
SHOW 21 0.2%
ADD ON (AND, OR, AND NOT) 293 3.2%
LOGON or LOGOFF 1,213 13.2%
COMMENT 0 0.0%
SAVE 530 5.8%
USE 0 0.0%
OTHER 281 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 1,266 36.6% 255 20.1% 12 50.6 147.3
TITLE WORD 365 10.5% 96 26.3% 11 116.1 616.4
EXACT TITLE 61 1.8% 22 36.1% 1 7.3 21.6
JOURNAL 75 2.2% 27 36.0% 739 2616.8 3846.2
EXACT JOURNAL 43 1.2% 6 14.0% 417 2149.8 3430.6
SUBJECT 111 3.2% 53 47.7% 356 4990.1 15954.4
EXACT SUBJECT 219 6.3% 164 74.9% 2 988.8 5102.6
KEYWORD 631 18.2% 93 14.7% 35 1116.6 7895.5
FORM/PUB TYPE 16 0.5% 0 0.0% 53 533.9 863.9
DATE 433 12.5% 197 45.5% 6 36.8 124.6
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. 3 0.1% 3 100% 0 0.0 0.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 8 0.2% 0 0.0% 20 150.1 333.8
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 2 0.1% 0 0.0% 1 1.0 0.0
PERIODICAL 85 2.5% 16 18.8% 4 149.0 764.4
EXACT PE 23 0.7% 4 17.4% 2 6.1 11.5
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 122 3.5% 75 61.5% 2 6.8 10.7
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 583 21.3% 235 40.3% 6 59.2 243.1
Single 2,154 78.7% 461 21.4% 24 719.2 5567.6
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 5 71.4% 3 60.0% 3 2.5 0.7
EXACT SUBJECT 2 28.6% 0 0.0% 3 2.5 0.7
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.9%
SHORT 90.1%
LONG 0.7%
TAGS 0.5%
FIELDS 2.7%
BROWSE REVIEW 0.1%
BROWSE LONG 0.0%
PERIODICALS 2.7%
COMMENTS 0.0%
Other 1.4%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.7%
Ten most frequent errors:
1. NS command - no next screen 34.7%
2. DISPLAY command - no FIND results 19.6%
3. First word of command is invalid 19.5%
4. FIND command with invalid index name 7.4%
5. Search term missing from search command 3.3%
6. DISPLAY command contains invalid word 3.1%
7. PS command - no previous screen 3.0%
8. DATE search with unrecognized word 1.0%
9. BROWSE command with invalid index name 1.0%
10. Valid command at an inappropriate time 0.8%
11. All others 6.6%
Ten most frequent EXPLAIN requests:
1. GUIDE 24.6%
2. LOCATE (INS/PSY DBS) 23.0%
3. DISPLAY (INS/PSY DBS) 8.2%
4. FIND (PSY DB) 8.2%
5. INDEXES (PSY DB) 4.9%
6. PUBLICATION TYPE (PSY DB) 4.9%
7. FIND LOCATION 3.3%
8. Unrecognized term 3.3%
9. COMMANDS (ABI/PSY DBS) 1.6%
10. ABI TEXT 1.6%
11. All others 16.4%
Ten most frequent HELP situations:
1. First word of command is invalid 20.2%
2. Help requested from SET DB command 19.3%
3. DISPLAY command - middle of >1 screen 11.4%
4. DISPLAY command-first of >1 screen 10.5%
5. FIND command with zero results 5.3%
6. NS command - no next screen 4.4%
7. FIND command with invalid index name 4.4%
8. FIND command retrieves >1 book 4.4%
9. DISPLAY command - last of >1 screen 3.5%
10. PS command - no previous screen 2.6%
11. All others 14.0%
Ten most frequent SHOW requests:
1. HISTORY 73.7%
2. SEARCH 21.1%
3. SETTINGS (INS/PSY DBS) 5.3%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)