MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 05/01/01 through 05/31/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 171 707 878
Davis 613 7 620
Irvine 384 0 384
Los Angeles 5 668 673
Riverside 58 159 217
San Diego 53 522 575
San Francisco 263 0 263
Santa Barbara 43 150 193
Santa Cruz 91 154 245
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 15 151 166
Other-Network UC n/a 689 689
_______ ______ _____
1,696 3,207 4,903
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 53 211 3,916
2-4 a.m. 69 1,075 2,433
4-6 a.m. 97 1,170 3,785
6-8 a.m. 99 252 2,643
8-10 a.m. 452 1,582 12,325
10-12 a.m. 816 2,871 25,983
12-2 p.m. 824 3,000 30,872
2-4 p.m. 993 3,635 36,372
4-6 p.m. 675 2,437 26,687
6-8 p.m. 336 1,396 17,099
8-10 p.m. 306 1,178 11,832
10-12 p.m. 183 823 7,977
__________ __________ __________ _________________
Total: 4,903 19,630 181,924
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 785 2,763 3,548
Davis 3,780 20 3,800
Irvine 1,539 0 1,539
Los Angeles 27 2,736 2,763
Riverside 231 600 831
San Diego 234 1,563 1,797
San Francisco 895 0 895
Santa Barbara 148 546 694
Santa Cruz 272 511 783
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 51 529 580
Other-Network UC n/a 2,400 2,400
_______ ______ _____
7,962 11,668 19,630
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 9,764 26,788 36,552
Davis 18,825 101 18,926
Irvine 15,343 0 15,343
Los Angeles 244 34,217 34,461
Riverside 1,401 5,631 7,032
San Diego 923 14,937 15,860
San Francisco 8,551 0 8,551
Santa Barbara 1,103 5,379 6,482
Santa Cruz 2,467 6,326 8,793
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 768 4,194 4,962
Other-Network UC n/a 24,962 24,962
_______ ______ _____
59,389 122,535 181,924
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 1.1
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) 7:46
Average session length (minutes:seconds) 12:55
Longest session recorded (minutes:seconds) 753:38
Average number of searches completed per session 4.0
Retrievals per search - median 6.0
Retrievals per search - average 644.6
Retrievals per search - standard deviation 6089.3
Percent of searches completed with 0 results 26.1%
Percent of searches entered that are long 3.0%
Percent of long searches completed
(includes partial results) 67.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 17,720 31.3%
DISPLAY (excluding automatic displays) 22,777 40.3%
BROWSE 61 0.1%
SELECT 29 0.1%
HELP 527 0.9%
EXPLAIN 592 1.0%
SET/RESET 1,549 2.7%
SHOW 142 0.3%
ADD ON (AND, OR, AND NOT) 1,904 3.4%
LOGON or LOGOFF 7,267 12.8%
COMMENT 1 0.0%
SAVE 2,434 4.3%
USE 11 0.0%
OTHER 1,632 2.9%
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 7,758 33.5% 1,426 18.4% 13 68.7 286.1
TITLE WORD 2,061 8.9% 675 32.8% 8 91.0 381.0
EXACT TITLE 199 0.9% 79 39.7% 2 17.0 52.4
JOURNAL 391 1.7% 143 36.6% 235 2232.6 6936.9
EXACT JOURNAL 263 1.1% 64 24.3% 443 1502.4 2837.2
SUBJECT 1,168 5.0% 563 48.2% 465 6803.4 17525.6
EXACT SUBJECT 2,120 9.2% 1,521 71.7% 2 196.6 1619.2
KEYWORD 4,187 18.1% 581 13.9% 52 1652.2 10802.6
FORM/PUB TYPE 37 0.2% 7 18.9% 54 220.4 485.0
DATE 3,189 13.8% 1,721 54.0% 4 29.2 164.2
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. 12 0.1% 6 50.0% 16 39.8 54.5
CONFERENCE 2 0.0% 1 50.0% 87 87.0 0.0
LANGUAGE 51 0.2% 5 9.8% 92 584.9 1983.8
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
ISBN 1 0.0% 1 100% 0 0.0 0.0
ID NUMBER 61 0.3% 0 0.0% 1 1.0 0.0
PERIODICAL 299 1.3% 57 19.1% 4 65.1 224.9
EXACT PE 51 0.2% 3 5.9% 3 11.5 35.0
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 1,284 5.6% 726 56.5% 2 92.3 1225.7
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 4,211 24.0% 2,004 47.6% 4 49.2 413.3
Single 13,317 76.0% 2,768 20.8% 29 1092.5 7845.9
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 59 96.7% 19 32.2% 2 4.7 7.0
EXACT SUBJECT 2 3.3% 0 0.0% 1 1.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.2%
SHORT 87.8%
LONG 0.8%
TAGS 1.3%
FIELDS 4.1%
BROWSE REVIEW 0.2%
BROWSE LONG 0.1%
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 10.5%
Ten most frequent errors:
1. NS command - no next screen 28.1%
2. DISPLAY command - no FIND results 23.8%
3. First word of command is invalid 21.4%
4. FIND command with invalid index name 6.2%
5. PS command - no previous screen 3.6%
6. DISPLAY command contains invalid word 3.3%
7. Valid command at an inappropriate time 1.5%
8. Search term missing from search command 1.4%
9. DISPLAY command-record numbers too large 1.1%
10. Add-on search, no index name after verb 1.1%
11. All others 8.3%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 30.4%
2. GUIDE 19.3%
3. COMMANDS (ABI/PSY DBS) 7.6%
4. FIND (PSY DB) 6.3%
5. Unrecognized term 4.4%
6. DISPLAY (INS/PSY DBS) 4.1%
7. MAIL 3.4%
8. INDEXES (PSY DB) 3.4%
9. ADDON SEARCH 2.0%
10. FIND LOCATION 1.9%
11. All others 17.4%
Ten most frequent HELP situations:
1. Help requested from SET DB command 22.2%
2. First word of command is invalid 12.0%
3. DISPLAY command-first of >1 screen 11.4%
4. FIND command with invalid index name 8.0%
5. DISPLAY command - middle of >1 screen 7.2%
6. FIND command with zero results 5.0%
7. DISPLAY command-complete in one screen 4.4%
8. FIND command retrieves >1 book 3.8%
9. DISPLAY command - last of >1 screen 3.2%
10. NS command - no next screen 2.9%
11. All others 19.9%
Ten most frequent SHOW requests:
1. HISTORY 50.7%
2. SEARCH 30.4%
3. PSYCINFO NEWS 7.2%
4. GLOSSARY 2.2%
5. MAIL SETTINGS 2.2%
6. MAIL STATUS 2.2%
7. SETTINGS (INS/PSY DBS) 1.4%
8. LOCATION 0.7%
9. PSYCINFO STATISTICS 0.7%
10. SYSTEM NEWS 0.7%
11. All others 1.4%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)