MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 03/01/00 through 03/31/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 698 1,071 1,769
Davis 656 31 687
Irvine 836 0 836
Los Angeles 500 936 1,436
Riverside 253 216 469
San Diego 69 582 651
San Francisco 429 0 429
Santa Barbara 173 619 792
Santa Cruz 275 248 523
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 3 208 211
Other-Network UC n/a 833 833
_______ ______ _____
3,892 4,744 8,636
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 109 526 6,863
2-4 a.m. 59 251 2,975
4-6 a.m. 71 266 2,705
6-8 a.m. 190 697 8,242
8-10 a.m. 757 2,608 23,665
10-12 a.m. 1,467 5,580 57,172
12-2 p.m. 1,459 5,869 63,920
2-4 p.m. 1,908 7,847 85,102
4-6 p.m. 1,276 5,581 64,939
6-8 p.m. 570 2,506 31,940
8-10 p.m. 470 2,104 24,125
10-12 p.m. 300 1,503 19,149
__________ __________ __________ _________________
Total: 8,636 35,338 390,797
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 3,156 4,307 7,463
Davis 2,205 89 2,294
Irvine 3,586 0 3,586
Los Angeles 2,198 4,316 6,514
Riverside 1,030 987 2,017
San Diego 232 1,915 2,147
San Francisco 1,670 0 1,670
Santa Barbara 783 2,651 3,434
Santa Cruz 1,371 1,047 2,418
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 6 855 861
Other-Network UC n/a 2,934 2,934
_______ ______ _____
16,237 19,101 35,338
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 33,483 47,991 81,474
Davis 21,943 1,123 23,066
Irvine 35,716 0 35,716
Los Angeles 32,562 47,252 79,814
Riverside 11,314 10,094 21,408
San Diego 2,233 17,963 20,196
San Francisco 19,437 0 19,437
Santa Barbara 6,927 33,005 39,932
Santa Cruz 12,051 11,482 23,533
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 71 13,763 13,834
Other-Network UC n/a 32,387 32,387
_______ ______ _____
175,737 215,060 390,797
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.9
Standard deviation in seconds 2.4
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.2
2.0 PSYCINFO Database Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 9:16
Average session length (minutes:seconds) 14:37
Longest session recorded (minutes:seconds) 842:27
Average number of searches completed per session 4.0
Retrievals per search - median 10.0
Retrievals per search - average 892.9
Retrievals per search - standard deviation 7138.4
Percent of searches completed with 0 results 23.1%
Percent of searches entered that are long 3.3%
Percent of long searches completed
(includes partial results) 63.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 31,485 28.2%
DISPLAY (excluding automatic displays) 48,172 43.1%
BROWSE 133 0.1%
SELECT 59 0.1%
HELP 1,792 1.6%
EXPLAIN 1,893 1.7%
SET/RESET 2,457 2.2%
SHOW 456 0.4%
ADD ON (AND, OR, AND NOT) 3,836 3.4%
LOGON or LOGOFF 12,711 11.4%
COMMENT 2 0.0%
SAVE 5,129 4.6%
USE 11 0.0%
OTHER 3,849 3.4%
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 12,834 36.7% 2,474 19.3% 18 85.8 1632.1
TITLE WORD 3,970 11.3% 1,144 28.8% 9 159.1 1300.1
EXACT TITLE 745 2.1% 283 38.0% 1 23.4 85.1
JOURNAL 928 2.7% 249 26.8% 633 3963.7 13459.5
EXACT JOURNAL 443 1.3% 131 29.6% 787 2187.8 3499.9
SUBJECT 3,518 10.1% 1,858 52.8% 605 5207.1 15968.0
EXACT SUBJECT 154 0.4% 66 42.9% 155 2965.4 8172.7
KEYWORD 9,471 27.1% 1,390 14.7% 55 1899.1 11150.7
FORM/PUB TYPE 143 0.4% 19 13.3% 18 2872.4 11809.8
DATE 1,677 4.8% 294 17.5% 6 65.2 433.8
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 4 0.0% 1 25.0% 36 49.7 23.7
AUTHOR AFFIL. 34 0.1% 18 52.9% 59 549.3 1770.4
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 82 0.2% 3 3.7% 151 3174.0 24643.9
ISSN 3 0.0% 2 66.7% 102 102.0 0.0
ISBN 3 0.0% 1 33.3% 1 1.0 0.0
ID NUMBER 7 0.0% 7 100% 0 0.0 0.0
PERIODICAL 662 1.9% 141 21.3% 3 58.3 431.2
EXACT PE 80 0.2% 12 15.0% 2 32.3 165.9
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 246 0.7% 47 19.1% 98 1466.7 5550.6
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 3,769 12.1% 866 23.0% 7 255.3 5180.8
Single 27,291 87.9% 6,386 23.4% 37 1363.4 8633.0
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 127 95.5% 37 29.1% 3 6.2 7.1
EXACT SUBJECT 6 4.5% 1 16.7% 1 1.6 0.9
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.9%
SHORT 90.8%
LONG 1.2%
TAGS 0.1%
FIELDS 1.5%
BROWSE REVIEW 0.2%
BROWSE LONG 0.1%
PERIODICALS 1.8%
COMMENTS 0.0%
Other 2.4%
2.2 Error, EXPLAIN and HELP statistics
_______________________________________
Percent of commands that contained errors 10.5%
Ten most frequent errors:
1. First word of command is invalid 31.2%
2. NS command - no next screen 29.9%
3. FIND command with invalid index name 9.2%
4. PS command - no previous screen 5.9%
5. DISPLAY command contains invalid word 4.8%
6. Search term missing from search command 2.1%
7. Valid command at an inappropriate time 2.1%
8. Add-on search, no index name after verb 1.3%
9. Command contains escape or arrow key 1.2%
10. DISPLAY command-record numbers too large 1.1%
11. All others 11.0%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 28.3%
2. GUIDE 18.7%
3. FIND (PSY DB) 7.3%
4. COMMANDS (ABI/PSY DBS) 5.3%
5. ADDON SEARCH 5.1%
6. Unrecognized term 5.0%
7. INDEXES (PSY DB) 3.1%
8. MAIL 2.8%
9. DISPLAY (INS/PSY DBS) 2.8%
10. MAGS TEXT 1.5%
11. All others 20.1%
Ten most frequent HELP situations:
1. Help requested from SET DB command 18.5%
2. First word of command is invalid 15.6%
3. DISPLAY command-first of >1 screen 8.2%
4. FIND command with invalid index name 7.1%
5. FIND command with zero results 6.1%
6. FIND command retrieves >1 book 5.9%
7. DISPLAY command - middle of >1 screen 5.8%
8. DISPLAY command-complete in one screen 4.9%
9. DISPLAY command - last of >1 screen 3.3%
10. PS command - no previous screen 2.9%
11. All others 21.6%
Ten most frequent SHOW requests:
1. HISTORY 41.1%
2. SEARCH 35.1%
3. MAIL STATUS 8.9%
4. SETTINGS (INS/PSY DBS) 4.2%
5. GLOSSARY 3.5%
6. MAIL SETTINGS 1.5%
7. SYSTEM NEWS 1.2%
8. LIBRARY SETTINGS 1.0%
9. DISPLAY (MED/INS/PSY DBS) 0.7%
10. PSYCINFO NEWS 0.5%
11. All others 2.2%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)