MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 01/01/99 through 01/31/99
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 566 1,255 1,821
Davis 760 20 780
Irvine 1,376 0 1,376
Los Angeles 749 1,727 2,476
Riverside 1,063 346 1,409
San Diego 73 917 990
San Francisco 588 20 608
Santa Barbara 970 794 1,764
Santa Cruz 757 385 1,142
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 15 162 177
Other-Network UC n/a 1,033 1,033
_______ ______ _____
6,917 6,659 13,576
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 124 702 7,609
2-4 a.m. 61 301 3,084
4-6 a.m. 56 281 3,611
6-8 a.m. 180 634 7,885
8-10 a.m. 1,030 3,937 38,861
10-12 a.m. 2,235 9,257 97,220
12-2 p.m. 2,573 12,251 128,800
2-4 p.m. 3,024 14,146 151,707
4-6 p.m. 2,085 9,799 106,565
6-8 p.m. 1,007 4,965 59,936
8-10 p.m. 744 3,879 39,030
10-12 p.m. 457 2,434 27,044
__________ __________ __________ _________________
Total: 13,576 62,586 671,352
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 2,601 4,980 7,581
Davis 3,331 69 3,400
Irvine 7,171 0 7,171
Los Angeles 3,630 7,838 11,468
Riverside 7,264 1,399 8,663
San Diego 273 3,317 3,590
San Francisco 2,144 86 2,230
Santa Barbara 4,339 3,462 7,801
Santa Cruz 3,998 2,264 6,262
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 27 620 647
Other-Network UC n/a 3,773 3,773
_______ ______ _____
34,778 27,808 62,586
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 28,269 61,014 89,283
Davis 29,002 393 29,395
Irvine 74,152 0 74,152
Los Angeles 48,578 90,438 139,016
Riverside 53,514 18,857 72,371
San Diego 1,445 34,229 35,674
San Francisco 24,023 1,278 25,301
Santa Barbara 47,802 42,980 90,782
Santa Cruz 37,859 21,029 58,888
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 192 11,243 11,435
Other-Network UC n/a 45,055 45,055
_______ ______ _____
344,836 326,516 671,352
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.0
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 0.3
2.0 PSYCINFO Database Detailed Statistics
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Median session length (minutes:seconds) 10:54
Average session length (minutes:seconds) 16:51
Longest session recorded (minutes:seconds) 426:46
Average number of searches completed per session 4.6
Retrievals per search - median 10.0
Retrievals per search - average 1011.1
Retrievals per search - standard deviation 7533.7
Percent of searches completed with 0 results 24.9%
Percent of searches entered that are long 2.5%
Percent of long searches completed
(includes partial results) 60.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 55,156 27.4%
DISPLAY (excluding automatic displays) 91,569 45.4%
BROWSE 336 0.2%
SELECT 97 0.0%
HELP 3,275 1.6%
EXPLAIN 3,362 1.7%
SET/RESET 4,004 2.0%
SHOW 792 0.4%
ADD ON (AND, OR, AND NOT) 7,406 3.7%
LOGON or LOGOFF 19,936 9.9%
COMMENT 9 0.0%
SAVE 8,950 4.4%
USE 32 0.0%
OTHER 7,001 3.5%
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 19,195 31.9% 3,785 19.7% 17 72.3 239.6
TITLE WORD 6,130 10.2% 1,905 31.1% 13 142.7 1538.0
EXACT TITLE 1,161 1.9% 501 43.2% 1 28.5 101.7
JOURNAL 1,491 2.5% 424 28.4% 547 3564.0 12197.9
EXACT JOURNAL 676 1.1% 208 30.8% 683 2765.3 11498.7
SUBJECT 7,102 11.8% 3,973 55.9% 742 6128.9 16684.1
EXACT SUBJECT 446 0.7% 214 48.0% 781 2712.9 6001.4
KEYWORD 19,150 31.8% 3,159 16.5% 56 2015.8 11473.6
FORM/PUB TYPE 226 0.4% 32 14.2% 41 851.6 4384.2
DATE 2,511 4.2% 412 16.4% 5 41.8 293.3
ADDED 3 0.0% 3 100% 0 0.0 0.0
ARTICLE 1 0.0% 1 100% 0 0.0 0.0
AUTHOR AFFIL. 56 0.1% 27 48.2% 27 524.1 1079.2
CONFERENCE 3 0.0% 2 66.7% 60 60.0 0.0
LANGUAGE 185 0.3% 23 12.4% 43 421.8 2743.6
ISSN 1 0.0% 1 100% 0 0.0 0.0
ISBN 1 0.0% 0 0.0% 3 3.0 0.0
ID NUMBER 3 0.0% 1 33.3% 1 1.0 0.0
PERIODICAL 1,210 2.0% 269 22.2% 4 243.2 2251.4
EXACT PE 275 0.5% 68 24.7% 3 44.7 197.7
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 356 0.6% 88 24.7% 39 1124.5 4753.6
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 5,425 9.9% 1,288 23.7% 7 141.0 1172.3
Single 49,108 90.1% 12,473 25.4% 39 1597.5 9529.8
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 323 96.1% 93 28.8% 2 5.9 8.9
EXACT SUBJECT 13 3.9% 9 69.2% 1 1.5 1.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.2%
SHORT 89.4%
LONG 1.3%
TAGS 0.1%
FIELDS 1.3%
BROWSE REVIEW 0.2%
BROWSE LONG 0.1%
PERIODICALS 1.7%
COMMENTS 0.0%
Other 4.5%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.4%
Ten most frequent errors:
1. First word of command is invalid 31.9%
2. NS command - no next screen 28.9%
3. FIND command with invalid index name 8.0%
4. PS command - no previous screen 5.8%
5. DISPLAY command contains invalid word 4.5%
6. Valid command at an inappropriate time 3.0%
7. Search term missing from search command 1.9%
8. DISPLAY command-record numbers too large 1.6%
9. Add-on search, no index name after verb 1.5%
10. Command contains escape or arrow key 1.2%
11. All others 11.6%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 26.8%
2. GUIDE 17.8%
3. FIND (PSY DB) 8.4%
4. COMMANDS (ABI/PSY DBS) 6.5%
5. Unrecognized term 5.1%
6. INDEXES (PSY DB) 3.9%
7. DISPLAY (INS/PSY DBS) 3.2%
8. ADDON SEARCH 3.2%
9. MAIL 3.1%
10. FIND LOCATION 2.0%
11. All others 20.1%
Ten most frequent HELP situations:
1. Help requested from SET DB command 17.8%
2. First word of command is invalid 15.0%
3. DISPLAY command-first of >1 screen 8.3%
4. DISPLAY command - middle of >1 screen 6.4%
5. FIND command with invalid index name 6.3%
6. DISPLAY command-complete in one screen 5.6%
7. FIND command with zero results 5.5%
8. FIND command retrieves >1 book 4.6%
9. DISPLAY command - last of >1 screen 3.9%
10. NS command - no next screen 3.1%
11. All others 23.5%
Ten most frequent SHOW requests:
1. HISTORY 40.0%
2. SEARCH 36.4%
3. MAIL STATUS 9.0%
4. MAIL SETTINGS 3.6%
5. GLOSSARY 3.2%
6. SETTINGS (INS/PSY DBS) 2.1%
7. DLA NEWS 1.5%
8. PSYCINFO NEWS 0.8%
9. DISPLAY (MED/INS/PSY DBS) 0.6%
10. PUBLICATION TYPES (PSY DB) 0.4%
11. All others 2.5%