MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 12/09/00 through 12/15/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 108 178 286
Davis 95 2 97
Irvine 73 0 73
Los Angeles 42 185 227
Riverside 5 43 48
San Diego 2 102 104
San Francisco 75 0 75
Santa Barbara 6 44 50
Santa Cruz 2 30 32
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 3 17 20
Other-Network UC n/a 131 131
_______ ______ _____
411 732 1,143
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 35 152 807
2-4 a.m. 1 9 18
4-6 a.m. 3 8 18
6-8 a.m. 37 141 927
8-10 a.m. 133 471 3,740
10-12 a.m. 190 755 7,586
12-2 p.m. 176 611 6,146
2-4 p.m. 207 728 7,676
4-6 p.m. 167 705 7,684
6-8 p.m. 89 313 4,071
8-10 p.m. 69 190 1,729
10-12 p.m. 36 199 1,667
__________ __________ __________ _________________
Total: 1,143 4,282 42,069
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 446 621 1,067
Davis 366 9 375
Irvine 402 0 402
Los Angeles 166 792 958
Riverside 20 131 151
San Diego 9 361 370
San Francisco 204 0 204
Santa Barbara 8 142 150
Santa Cruz 3 90 93
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 6 54 60
Other-Network UC n/a 452 452
_______ ______ _____
1,630 2,652 4,282
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 4,694 7,084 11,778
Davis 3,664 212 3,876
Irvine 2,025 0 2,025
Los Angeles 3,428 7,475 10,903
Riverside 301 966 1,267
San Diego 11 2,866 2,877
San Francisco 2,211 0 2,211
Santa Barbara 141 1,286 1,427
Santa Cruz 1 1,089 1,090
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 27 427 454
Other-Network UC n/a 4,161 4,161
_______ ______ _____
16,503 25,566 42,069
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 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) 7:22
Average session length (minutes:seconds) 12:00
Longest session recorded (minutes:seconds) 158:52
Average number of searches completed per session 3.7
Retrievals per search - median 9.0
Retrievals per search - average 632.3
Retrievals per search - standard deviation 5164.7
Percent of searches completed with 0 results 21.3%
Percent of searches entered that are long 4.1%
Percent of long searches completed
(includes partial results) 68.9%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,932 31.0%
DISPLAY (excluding automatic displays) 5,339 42.2%
BROWSE 12 0.1%
SELECT 2 0.0%
HELP 79 0.6%
EXPLAIN 137 1.1%
SET/RESET 312 2.5%
SHOW 29 0.2%
ADD ON (AND, OR, AND NOT) 349 2.8%
LOGON or LOGOFF 1,710 13.5%
COMMENT 0 0.0%
SAVE 360 2.8%
USE 10 0.1%
OTHER 408 3.2%
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 2,146 48.1% 401 18.7% 14 74.3 261.9
TITLE WORD 575 12.9% 154 26.8% 7 94.6 543.3
EXACT TITLE 20 0.4% 8 40.0% 33 88.9 165.9
JOURNAL 157 3.5% 46 29.3% 255 1434.6 3112.3
EXACT JOURNAL 74 1.7% 16 21.6% 837 2089.7 3430.8
SUBJECT 269 6.0% 136 50.6% 305 2904.2 9057.1
EXACT SUBJECT 19 0.4% 3 15.8% 89 461.0 438.1
KEYWORD 852 19.1% 124 14.6% 42 2222.1 11151.6
FORM/PUB TYPE 18 0.4% 0 0.0% 51 111.1 200.8
DATE 262 5.9% 42 16.0% 5 22.3 66.1
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. 1 0.0% 1 100% 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 0 0.0% 0 0.0% 0 0.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 51 1.1% 12 23.5% 2 169.2 654.8
EXACT PE 2 0.0% 0 0.0% 22 21.5 29.0
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 14 0.3% 7 50.0% 11 34.7 52.7
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 565 14.6% 114 20.2% 5 34.2 110.1
Single 3,310 85.4% 719 21.7% 29 943.7 6401.4
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 9 75.0% 2 22.2% 1 2.0 1.9
EXACT SUBJECT 3 25.0% 0 0.0% 1 1.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.8%
SHORT 93.2%
LONG 0.7%
TAGS 0.1%
FIELDS 1.2%
BROWSE REVIEW 0.2%
BROWSE LONG 0.2%
PERIODICALS 1.2%
COMMENTS 0.0%
Other 1.5%
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 35.1%
2. First word of command is invalid 31.7%
3. FIND command with invalid index name 7.5%
4. PS command - no previous screen 6.4%
5. DISPLAY command contains invalid word 3.7%
6. Search term missing from search command 2.6%
7. Valid command at an inappropriate time 1.8%
8. Add-on search, no index name after verb 1.2%
9. Command contains escape or arrow key 1.2%
10. DISPLAY command-record numbers too large 0.9%
11. All others 8.0%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 32.1%
2. GUIDE 21.9%
3. FIND (PSY DB) 8.8%
4. Unrecognized term 5.8%
5. INDEXES (PSY DB) 5.1%
6. ADDON SEARCH 4.4%
7. COMMANDS (ABI/PSY DBS) 2.2%
8. DISPLAY (INS/PSY DBS) 2.2%
9. SAVE 2.2%
10. DATABASES 2.2%
11. All others 13.1%
Ten most frequent HELP situations:
1. Help requested from SET DB command 24.5%
2. DISPLAY command-first of >1 screen 13.0%
3. First word of command is invalid 10.2%
4. FIND command retrieves >1 book 6.9%
5. DISPLAY command-complete in one screen 6.0%
6. DISPLAY command - middle of >1 screen 6.0%
7. FIND command with invalid index name 5.1%
8. NS command - no next screen 4.6%
9. FIND command with zero results 4.6%
10. DISPLAY command - last of >1 screen 3.2%
11. All others 15.7%
Ten most frequent SHOW requests:
1. HISTORY 35.7%
2. SEARCH 32.1%
3. GLOSSARY 7.1%
4. MAIL SETTINGS 7.1%
5. PSYCINFO NEWS 3.6%
6. SYSTEM NEWS 3.6%
7. LIBRARY NEWS 3.6%
8. MAIL STATUS 3.6%
9. DATABASES 3.6%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)