MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 02/09/02 through 02/15/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 15 121 136
Davis 126 1 127
Irvine 52 0 52
Los Angeles 4 87 91
Riverside 2 28 30
San Diego 4 59 63
San Francisco 26 0 26
Santa Barbara 1 33 34
Santa Cruz 1 33 34
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 40 40
Other-Network UC n/a 144 144
_______ ______ _____
231 546 777
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 4 31 247
2-4 a.m. 16 256 413
4-6 a.m. 3 11 90
6-8 a.m. 21 59 1,244
8-10 a.m. 86 280 1,521
10-12 a.m. 168 561 4,875
12-2 p.m. 153 470 4,759
2-4 p.m. 171 452 5,391
4-6 p.m. 76 335 2,971
6-8 p.m. 47 229 1,448
8-10 p.m. 16 74 613
10-12 p.m. 16 52 350
__________ __________ __________ _________________
Total: 777 2,810 23,922
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 73 478 551
Davis 603 1 604
Irvine 118 0 118
Los Angeles 29 293 322
Riverside 1 79 80
San Diego 6 136 142
San Francisco 85 0 85
Santa Barbara 3 196 199
Santa Cruz 2 89 91
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 189 189
Other-Network UC n/a 429 429
_______ ______ _____
920 1,890 2,810
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,341 5,253 6,594
Davis 2,537 0 2,537
Irvine 1,421 0 1,421
Los Angeles 183 3,313 3,496
Riverside 2 795 797
San Diego 5 977 982
San Francisco 681 0 681
Santa Barbara 22 2,380 2,402
Santa Cruz 15 948 963
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 1,146 1,146
Other-Network UC n/a 2,903 2,903
_______ ______ _____
6,207 17,715 23,922
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.5
Standard deviation in seconds 1.1
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) 7:11
Average session length (minutes:seconds) 13:49
Longest session recorded (minutes:seconds) 250:06
Average number of searches completed per session 3.6
Retrievals per search - median 6.0
Retrievals per search - average 479.9
Retrievals per search - standard deviation 5126.0
Percent of searches completed with 0 results 25.2%
Percent of searches entered that are long 2.5%
Percent of long searches completed
(includes partial results) 67.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,515 30.1%
DISPLAY (excluding automatic displays) 3,490 41.8%
BROWSE 7 0.1%
SELECT 0 0.0%
HELP 59 0.7%
EXPLAIN 47 0.6%
SET/RESET 232 2.8%
SHOW 21 0.3%
ADD ON (AND, OR, AND NOT) 295 3.5%
LOGON or LOGOFF 1,157 13.9%
COMMENT 0 0.0%
SAVE 264 3.2%
USE 0 0.0%
OTHER 262 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 1,213 37.3% 224 18.5% 15 54.0 156.7
TITLE WORD 308 9.5% 90 29.2% 4 73.3 308.1
EXACT TITLE 49 1.5% 21 42.9% 2 7.3 9.1
JOURNAL 76 2.3% 18 23.7% 364 1615.4 2907.8
EXACT JOURNAL 60 1.8% 19 31.7% 325 1947.4 3463.5
SUBJECT 114 3.5% 41 36.0% 533 7475.0 24653.8
EXACT SUBJECT 246 7.6% 194 78.9% 2 6.9 10.5
KEYWORD 522 16.0% 88 16.9% 50 1167.8 7431.4
FORM/PUB TYPE 6 0.2% 0 0.0% 13 407.3 964.0
DATE 406 12.5% 214 52.7% 6 34.3 111.5
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. 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 13 0.4% 0 0.0% 50 119.2 129.5
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 54 1.7% 9 16.7% 6 24.9 58.3
EXACT PE 18 0.6% 0 0.0% 2 8.2 13.7
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 162 5.0% 104 64.2% 3 36.4 232.6
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 586 23.5% 273 46.6% 6 44.8 170.5
Single 1,908 76.5% 368 19.3% 25 831.7 6867.8
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% 2 28.6% 1 2.6 3.0
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.8%
SHORT 89.5%
LONG 0.9%
TAGS 0.7%
FIELDS 3.0%
BROWSE REVIEW 0.1%
BROWSE LONG 0.1%
PERIODICALS 2.8%
COMMENTS 0.0%
Other 1.1%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.3%
Ten most frequent errors:
1. NS command - no next screen 24.2%
2. DISPLAY command - no FIND results 23.8%
3. First word of command is invalid 21.5%
4. FIND command with invalid index name 6.0%
5. DISPLAY command contains invalid word 4.4%
6. PS command - no previous screen 2.9%
7. Search term missing from search command 2.1%
8. Valid command at an inappropriate time 1.9%
9. Add-on search, no index name after verb 1.6%
10. DISPLAY command-record numbers too large 1.4%
11. All others 10.3%
Ten most frequent EXPLAIN requests:
1. GUIDE 25.5%
2. LOCATE (INS/PSY DBS) 21.3%
3. INDEXES (PSY DB) 6.4%
4. FIND (PSY DB) 6.4%
5. ADDON SEARCH 6.4%
6. MAGS TEXT 4.3%
7. MAIL 4.3%
8. FIND LOCATION 4.3%
9. LOCATIONS 4.3%
10. COMMANDS (ABI/PSY DBS) 2.1%
11. All others 14.9%
Ten most frequent HELP situations:
1. First word of command is invalid 18.9%
2. Help requested from SET DB command 15.1%
3. DISPLAY command-first of >1 screen 7.5%
4. FIND command with invalid index name 6.6%
5. FIND command retrieves >1 book 6.6%
6. DISPLAY command - middle of >1 screen 5.7%
7. DISPLAY command contains invalid word 4.7%
8. Add-on without index name after verb 4.7%
9. DISPLAY command-complete in one screen 4.7%
10. NS command - no next screen 3.8%
11. All others 21.7%
Ten most frequent SHOW requests:
1. HISTORY 38.1%
2. SEARCH 23.8%
3. MAIL STATUS 23.8%
4. GLOSSARY 4.8%
5. MAIL SETTINGS 4.8%
6. LIBRARY LOCATIONS 4.8%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)