MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 01/12/02 through 01/18/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 6 102 108
Davis 97 0 97
Irvine 28 0 28
Los Angeles 7 114 121
Riverside 4 29 33
San Diego 12 79 91
San Francisco 22 0 22
Santa Barbara 1 27 28
Santa Cruz 0 23 23
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 29 29
Other-Network UC n/a 137 137
_______ ______ _____
177 540 717
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 4 6 40
2-4 a.m. 17 259 429
4-6 a.m. 4 5 52
6-8 a.m. 17 46 1,209
8-10 a.m. 98 365 1,487
10-12 a.m. 136 493 4,855
12-2 p.m. 137 586 4,999
2-4 p.m. 140 599 3,577
4-6 p.m. 80 315 2,713
6-8 p.m. 35 151 1,014
8-10 p.m. 31 134 756
10-12 p.m. 18 135 1,299
__________ __________ __________ _________________
Total: 717 3,094 22,430
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 13 364 377
Davis 618 0 618
Irvine 119 0 119
Los Angeles 16 601 617
Riverside 42 103 145
San Diego 33 329 362
San Francisco 125 0 125
Santa Barbara 1 93 94
Santa Cruz 0 80 80
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 109 109
Other-Network UC n/a 448 448
_______ ______ _____
967 2,127 3,094
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 118 4,805 4,923
Davis 3,266 0 3,266
Irvine 1,253 0 1,253
Los Angeles 32 4,007 4,039
Riverside 222 569 791
San Diego 225 1,834 2,059
San Francisco 793 0 793
Santa Barbara 1 745 746
Santa Cruz 0 769 769
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 934 934
Other-Network UC n/a 2,857 2,857
_______ ______ _____
5,910 16,520 22,430
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.6
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) 7:24
Average session length (minutes:seconds) 12:41
Longest session recorded (minutes:seconds) 488:08
Average number of searches completed per session 4.3
Retrievals per search - median 4.0
Retrievals per search - average 246.7
Retrievals per search - standard deviation 1951.9
Percent of searches completed with 0 results 30.0%
Percent of searches entered that are long 3.6%
Percent of long searches completed
(includes partial results) 67.9%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,829 33.3%
DISPLAY (excluding automatic displays) 3,314 38.9%
BROWSE 7 0.1%
SELECT 0 0.0%
HELP 73 0.9%
EXPLAIN 61 0.7%
SET/RESET 188 2.2%
SHOW 28 0.3%
ADD ON (AND, OR, AND NOT) 265 3.1%
LOGON or LOGOFF 1,130 13.3%
COMMENT 0 0.0%
SAVE 335 3.9%
USE 0 0.0%
OTHER 285 3.3%
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 1,419 36.8% 330 23.3% 9 50.7 158.8
TITLE WORD 291 7.6% 92 31.6% 4 58.0 242.7
EXACT TITLE 41 1.1% 11 26.8% 1 14.1 49.2
JOURNAL 65 1.7% 25 38.5% 402 2325.2 6349.4
EXACT JOURNAL 23 0.6% 10 43.5% 378 1875.8 3106.5
SUBJECT 106 2.8% 49 46.2% 1,863 5790.8 10800.2
EXACT SUBJECT 385 10.0% 291 75.6% 2 13.3 25.3
KEYWORD 581 15.1% 102 17.6% 35 418.3 1502.8
FORM/PUB TYPE 4 0.1% 0 0.0% 156 688.5 1170.1
DATE 662 17.2% 355 53.6% 5 75.5 344.7
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 5 0.1% 0 0.0% 35 1226.6 2676.8
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 7 0.2% 0 0.0% 1 1.0 0.0
PERIODICAL 33 0.9% 11 33.3% 6 33.6 111.0
EXACT PE 10 0.3% 2 20.0% 3 5.0 4.8
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 222 5.8% 141 63.5% 2 15.5 28.7
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 824 29.5% 405 49.1% 5 79.2 430.5
Single 1,966 70.5% 459 23.3% 18 452.8 2728.4
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 7 100% 0 0.0% 2 5.1 6.4
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.2%
SHORT 91.3%
LONG 0.9%
TAGS 1.2%
FIELDS 2.9%
BROWSE REVIEW 0.2%
BROWSE LONG 0.0%
PERIODICALS 1.2%
COMMENTS 0.0%
Other 1.0%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.7%
Ten most frequent errors:
1. DISPLAY command - no FIND results 29.7%
2. NS command - no next screen 25.3%
3. First word of command is invalid 19.7%
4. FIND command with invalid index name 5.9%
5. DISPLAY command contains invalid word 3.0%
6. Search term missing from search command 2.6%
7. PS command - no previous screen 2.1%
8. 1281 1.7%
9. Valid command at an inappropriate time 1.5%
10. DISPLAY command-record numbers too large 1.4%
11. All others 7.2%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 26.2%
2. GUIDE 19.7%
3. FIND (PSY DB) 9.8%
4. DATABASES 9.8%
5. COMMANDS (ABI/PSY DBS) 3.3%
6. CAPTURE DISPLAYS 3.3%
7. DISPLAY (INS/PSY DBS) 3.3%
8. Unrecognized term 3.3%
9. MAIL 1.6%
10. G175 1.6%
11. All others 18.0%
Ten most frequent HELP situations:
1. First word of command is invalid 18.7%
2. Help requested from SET DB command 17.2%
3. DISPLAY command - middle of >1 screen 9.0%
4. FIND command with zero results 7.5%
5. FIND command with invalid index name 6.0%
6. DISPLAY command-first of >1 screen 5.2%
7. DISPLAY command - last of >1 screen 4.5%
8. NS command - no next screen 3.7%
9. 1281 3.7%
10. 352 3.0%
11. All others 21.6%
Ten most frequent SHOW requests:
1. HISTORY 69.6%
2. SEARCH 21.7%
3. SETTINGS (INS/PSY DBS) 4.3%
4. PUBLICATION TYPES (PSY DB) 4.3%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)