MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 10/01/01 through 10/31/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 86 651 737
Davis 521 9 530
Irvine 202 0 202
Los Angeles 9 429 438
Riverside 64 120 184
San Diego 32 459 491
San Francisco 181 0 181
Santa Barbara 15 141 156
Santa Cruz 15 125 140
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 2 127 129
Other-Network UC n/a 793 793
_______ ______ _____
1,127 2,854 3,981
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 73 197 1,487
2-4 a.m. 83 712 2,752
4-6 a.m. 29 158 873
6-8 a.m. 95 380 3,209
8-10 a.m. 419 1,387 10,802
10-12 a.m. 704 2,057 18,924
12-2 p.m. 705 2,339 22,090
2-4 p.m. 842 3,110 28,685
4-6 p.m. 512 1,912 22,991
6-8 p.m. 236 856 8,104
8-10 p.m. 159 594 5,428
10-12 p.m. 124 441 4,378
__________ __________ __________ _________________
Total: 3,981 14,143 129,723
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 314 2,509 2,823
Davis 2,280 46 2,326
Irvine 707 0 707
Los Angeles 34 1,628 1,662
Riverside 182 387 569
San Diego 181 1,465 1,646
San Francisco 595 0 595
Santa Barbara 20 593 613
Santa Cruz 32 406 438
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 3 509 512
Other-Network UC n/a 2,252 2,252
_______ ______ _____
4,348 9,795 14,143
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,861 27,232 30,093
Davis 17,227 302 17,529
Irvine 5,879 0 5,879
Los Angeles 648 18,630 19,278
Riverside 3,200 3,976 7,176
San Diego 190 13,597 13,787
San Francisco 6,714 0 6,714
Santa Barbara 37 5,654 5,691
Santa Cruz 362 4,469 4,831
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 5 3,800 3,805
Other-Network UC n/a 14,940 14,940
_______ ______ _____
37,123 92,600 129,723
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 1.6
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.3
2.0 PSYCINFO Database Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 7:58
Average session length (minutes:seconds) 13:02
Longest session recorded (minutes:seconds) 502:30
Average number of searches completed per session 3.5
Retrievals per search - median 7.0
Retrievals per search - average 611.7
Retrievals per search - standard deviation 5439.3
Percent of searches completed with 0 results 22.8%
Percent of searches entered that are long 3.3%
Percent of long searches completed
(includes partial results) 69.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 12,682 30.0%
DISPLAY (excluding automatic displays) 17,071 40.4%
BROWSE 44 0.1%
SELECT 8 0.0%
HELP 441 1.0%
EXPLAIN 480 1.1%
SET/RESET 1,284 3.0%
SHOW 156 0.4%
ADD ON (AND, OR, AND NOT) 1,456 3.4%
LOGON or LOGOFF 5,629 13.3%
COMMENT 0 0.0%
SAVE 1,757 4.2%
USE 2 0.0%
OTHER 1,324 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 6,115 40.7% 1,078 17.6% 14 61.7 236.8
TITLE WORD 1,637 10.9% 504 30.8% 7 124.7 761.7
EXACT TITLE 155 1.0% 64 41.3% 2 31.9 112.2
JOURNAL 351 2.3% 104 29.6% 159 1727.5 3908.2
EXACT JOURNAL 159 1.1% 43 27.0% 575 2394.8 3833.7
SUBJECT 768 5.1% 368 47.9% 535 7369.0 19470.6
EXACT SUBJECT 577 3.8% 426 73.8% 3 942.2 3336.9
KEYWORD 3,218 21.4% 540 16.8% 33 1383.2 8684.0
FORM/PUB TYPE 52 0.3% 9 17.3% 28 1837.2 8935.6
DATE 1,229 8.2% 517 42.1% 4 25.2 158.2
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. 21 0.1% 4 19.0% 44 776.2 1191.0
CONFERENCE 3 0.0% 2 66.7% 13 13.0 0.0
LANGUAGE 25 0.2% 1 4.0% 85 648.4 1528.4
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 19 0.1% 0 0.0% 1 1.0 0.0
PERIODICAL 299 2.0% 54 18.1% 4 27.5 169.0
EXACT PE 44 0.3% 7 15.9% 2 22.9 110.3
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 341 2.3% 222 65.1% 4 475.0 3383.4
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 2,061 16.4% 768 37.3% 4 88.7 1650.9
Single 10,482 83.6% 2,181 20.8% 26 953.1 6766.4
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 43 97.7% 15 34.9% 2 9.1 17.0
EXACT SUBJECT 1 2.3% 1 100% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.1%
SHORT 87.3%
LONG 1.4%
TAGS 0.4%
FIELDS 3.3%
BROWSE REVIEW 0.2%
BROWSE LONG 0.1%
PERIODICALS 2.6%
COMMENTS 0.0%
Other 1.6%
2.2 Error, EXPLAIN and HELP statistics
_______________________________________
Percent of commands that contained errors 9.1%
Ten most frequent errors:
1. NS command - no next screen 29.4%
2. First word of command is invalid 27.1%
3. DISPLAY command - no FIND results 10.6%
4. FIND command with invalid index name 8.1%
5. PS command - no previous screen 4.8%
6. DISPLAY command contains invalid word 3.9%
7. Valid command at an inappropriate time 2.6%
8. Search term missing from search command 1.6%
9. DISPLAY command-record numbers too large 1.2%
10. Add-on search, no index name after verb 1.1%
11. All others 9.6%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 23.7%
2. GUIDE 17.1%
3. FIND (PSY DB) 10.0%
4. COMMANDS (ABI/PSY DBS) 5.6%
5. INDEXES (PSY DB) 5.6%
6. ADDON SEARCH 5.2%
7. Unrecognized term 4.4%
8. DATABASES 3.8%
9. DISPLAY (INS/PSY DBS) 3.3%
10. MAIL 2.5%
11. All others 18.8%
Ten most frequent HELP situations:
1. Help requested from SET DB command 19.1%
2. First word of command is invalid 16.1%
3. FIND command with invalid index name 9.3%
4. DISPLAY command - middle of >1 screen 8.4%
5. DISPLAY command-first of >1 screen 8.3%
6. FIND command retrieves >1 book 6.8%
7. FIND command with zero results 4.8%
8. PS command - no previous screen 3.6%
9. DISPLAY command - last of >1 screen 2.9%
10. DISPLAY command-complete in one screen 2.8%
11. All others 17.9%
Ten most frequent SHOW requests:
1. HISTORY 39.5%
2. SEARCH 34.2%
3. MAIL STATUS 9.2%
4. PSYCINFO NEWS 6.6%
5. SETTINGS (INS/PSY DBS) 3.3%
6. GLOSSARY 3.3%
7. MAIL SETTINGS 2.0%
8. Z39.50 NEWS 0.7%
9. PUBLICATION TYPES (PSY DB) 0.7%
10. DISPLAY (MED/INS/PSY DBS) 0.7%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)