MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 02/10/01 through 02/16/01
1.0 SUMMARY STATISTICS
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1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 71 223 294
Davis 249 0 249
Irvine 116 0 116
Los Angeles 34 149 183
Riverside 12 41 53
San Diego 23 106 129
San Francisco 59 0 59
Santa Barbara 8 41 49
Santa Cruz 36 48 84
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 8 28 36
Other-Network UC n/a 176 176
_______ ______ _____
616 812 1,428
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 22 87 1,128
2-4 a.m. 6 39 245
4-6 a.m. 127 574 1,142
6-8 a.m. 19 58 449
8-10 a.m. 135 462 3,959
10-12 a.m. 274 1,145 11,644
12-2 p.m. 223 970 10,608
2-4 p.m. 304 1,193 10,972
4-6 p.m. 164 788 9,583
6-8 p.m. 71 268 2,208
8-10 p.m. 56 238 1,841
10-12 p.m. 27 161 1,279
__________ __________ __________ _________________
Total: 1,428 5,983 55,058
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 247 843 1,090
Davis 1,055 0 1,055
Irvine 441 0 441
Los Angeles 331 629 960
Riverside 68 243 311
San Diego 101 621 722
San Francisco 198 0 198
Santa Barbara 63 216 279
Santa Cruz 78 202 280
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 13 79 92
Other-Network UC n/a 555 555
_______ ______ _____
2,595 3,388 5,983
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,682 9,250 11,932
Davis 7,330 0 7,330
Irvine 4,150 0 4,150
Los Angeles 3,010 7,202 10,212
Riverside 216 2,694 2,910
San Diego 395 3,431 3,826
San Francisco 1,904 0 1,904
Santa Barbara 345 1,731 2,076
Santa Cruz 2,922 1,943 4,865
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 125 1,062 1,187
Other-Network UC n/a 4,666 4,666
_______ ______ _____
23,079 31,979 55,058
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 1.6
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) 6:00
Average session length (minutes:seconds) 12:11
Longest session recorded (minutes:seconds) 437:31
Average number of searches completed per session 4.1
Retrievals per search - median 5.0
Retrievals per search - average 519.4
Retrievals per search - standard deviation 4084.0
Percent of searches completed with 0 results 26.9%
Percent of searches entered that are long 2.3%
Percent of long searches completed
(includes partial results) 60.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 5,293 30.8%
DISPLAY (excluding automatic displays) 6,632 38.6%
BROWSE 85 0.5%
SELECT 16 0.1%
HELP 209 1.2%
EXPLAIN 235 1.4%
SET/RESET 510 3.0%
SHOW 80 0.5%
ADD ON (AND, OR, AND NOT) 690 4.0%
LOGON or LOGOFF 2,153 12.5%
COMMENT 1 0.0%
SAVE 934 5.4%
USE 7 0.0%
OTHER 452 2.6%
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 2,039 31.0% 379 18.6% 17 71.3 190.9
TITLE WORD 688 10.5% 199 28.9% 8 70.0 241.7
EXACT TITLE 120 1.8% 45 37.5% 1 13.7 64.4
JOURNAL 157 2.4% 56 35.7% 39 729.4 1557.9
EXACT JOURNAL 121 1.8% 60 49.6% 1,504 2277.0 3396.5
SUBJECT 406 6.2% 234 57.6% 340 5306.6 15197.2
EXACT SUBJECT 515 7.8% 354 68.7% 3 518.4 1442.8
KEYWORD 1,246 19.0% 223 17.9% 28 928.0 5538.5
FORM/PUB TYPE 17 0.3% 2 11.8% 454 1221.3 1707.8
DATE 737 11.2% 383 52.0% 3 16.9 64.2
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. 6 0.1% 0 0.0% 80 143.2 192.2
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 10 0.2% 1 10.0% 180 865.1 1850.0
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
ISBN 1 0.0% 0 0.0% 23 23.0 0.0
ID NUMBER 110 1.7% 0 0.0% 1 1.0 0.0
PERIODICAL 95 1.4% 14 14.7% 5 21.3 50.5
EXACT PE 8 0.1% 3 37.5% 2 2.4 1.1
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 296 4.5% 182 61.5% 2 459.1 2059.1
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 1,031 19.7% 469 45.5% 4 60.2 368.0
Single 4,212 80.3% 1,010 24.0% 26 725.8 4907.0
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 84 98.8% 16 19.0% 1 9.6 19.8
EXACT SUBJECT 1 1.2% 0 0.0% 1 1.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 0.9%
SHORT 87.9%
LONG 1.6%
TAGS 1.7%
FIELDS 2.8%
BROWSE REVIEW 0.8%
BROWSE LONG 0.7%
PERIODICALS 2.0%
COMMENTS 0.0%
Other 1.6%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.3%
Ten most frequent errors:
1. NS command - no next screen 28.4%
2. First word of command is invalid 22.5%
3. DISPLAY command - no FIND results 18.7%
4. FIND command with invalid index name 8.1%
5. PS command - no previous screen 4.0%
6. DISPLAY command contains invalid word 3.2%
7. Search term missing from search command 2.0%
8. Valid command at an inappropriate time 1.3%
9. NS of SHOW/EXP command-no next screen 0.9%
10. DISPLAY command-record numbers too large 0.9%
11. All others 10.0%
Ten most frequent EXPLAIN requests:
1. GUIDE 23.0%
2. LOCATE (INS/PSY DBS) 20.4%
3. FIND (PSY DB) 9.4%
4. Unrecognized term 6.0%
5. INDEXES (PSY DB) 5.5%
6. COMMANDS (ABI/PSY DBS) 4.7%
7. MAIL 4.7%
8. ADDON SEARCH 4.3%
9. MAGS TEXT 1.7%
10. DISPLAY (INS/PSY DBS) 1.7%
11. All others 18.7%
Ten most frequent HELP situations:
1. Help requested from SET DB command 19.1%
2. First word of command is invalid 15.5%
3. DISPLAY command - middle of >1 screen 11.0%
4. FIND command with invalid index name 7.9%
5. FIND command with zero results 7.9%
6. FIND command retrieves >1 book 5.6%
7. DISPLAY command-first of >1 screen 4.3%
8. NS command - no next screen 3.2%
9. DISPLAY command-complete in one screen 3.2%
10. PS command - no previous screen 2.7%
11. All others 19.6%
Ten most frequent SHOW requests:
1. HISTORY 50.7%
2. MAIL STATUS 24.7%
3. SEARCH 8.2%
4. PSYCINFO NEWS 5.5%
5. GLOSSARY 4.1%
6. MAIL SETTINGS 2.7%
7. SETTINGS (INS/PSY DBS) 1.4%
8. EXPERIMENTS 1.4%
9. TIMEOUT SETTING 1.4%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)