MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 11/01/99 through 11/30/99
1.0 SUMMARY STATISTICS
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1.1 Total sessions:
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Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,618 1,550 3,168
Davis 948 51 999
Irvine 1,024 0 1,024
Los Angeles 803 1,202 2,005
Riverside 563 263 826
San Diego 107 661 768
San Francisco 494 10 504
Santa Barbara 194 645 839
Santa Cruz 985 340 1,325
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 64 324 388
Other-Network UC n/a 960 960
_______ ______ _____
6,800 6,006 12,806
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 124 644 6,099
2-4 a.m. 40 158 1,854
4-6 a.m. 38 131 1,933
6-8 a.m. 130 542 4,936
8-10 a.m. 907 3,238 29,774
10-12 a.m. 2,132 8,323 93,507
12-2 p.m. 2,403 10,139 105,345
2-4 p.m. 2,806 11,896 127,729
4-6 p.m. 2,066 8,496 95,698
6-8 p.m. 1,000 4,760 61,038
8-10 p.m. 753 3,414 40,253
10-12 p.m. 407 1,919 20,056
__________ __________ __________ _________________
Total: 12,806 53,660 588,222
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 7,021 5,656 12,677
Davis 3,859 222 4,081
Irvine 4,258 0 4,258
Los Angeles 3,824 5,215 9,039
Riverside 2,648 936 3,584
San Diego 392 2,571 2,963
San Francisco 1,814 19 1,833
Santa Barbara 978 2,631 3,609
Santa Cruz 5,134 1,423 6,557
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 83 1,313 1,396
Other-Network UC n/a 3,663 3,663
_______ ______ _____
30,011 23,649 53,660
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 82,365 76,334 158,699
Davis 35,445 1,289 36,734
Irvine 42,724 0 42,724
Los Angeles 54,129 68,165 122,294
Riverside 23,103 9,616 32,719
San Diego 2,365 22,189 24,554
San Francisco 17,821 3,017 20,838
Santa Barbara 7,864 24,989 32,853
Santa Cruz 46,103 13,280 59,383
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 1,421 17,302 18,723
Other-Network UC n/a 38,701 38,701
_______ ______ _____
313,340 274,882 588,222
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.9
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
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Median session length (minutes:seconds) 9:49
Average session length (minutes:seconds) 15:01
Longest session recorded (minutes:seconds) 472:38
Average number of searches completed per session 4.1
Retrievals per search - median 10.0
Retrievals per search - average 1113.7
Retrievals per search - standard deviation 8373.5
Percent of searches completed with 0 results 25.5%
Percent of searches entered that are long 2.5%
Percent of long searches completed
(includes partial results) 54.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 48,869 28.3%
DISPLAY (excluding automatic displays) 76,206 44.1%
BROWSE 285 0.2%
SELECT 86 0.0%
HELP 3,754 2.2%
EXPLAIN 3,962 2.3%
SET/RESET 3,269 1.9%
SHOW 767 0.4%
ADD ON (AND, OR, AND NOT) 4,770 2.8%
LOGON or LOGOFF 19,444 11.3%
COMMENT 1 0.0%
SAVE 5,720 3.3%
USE 19 0.0%
OTHER 5,881 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 16,756 31.4% 3,368 20.1% 17 68.6 211.3
TITLE WORD 6,339 11.9% 1,979 31.2% 8 96.3 692.8
EXACT TITLE 1,276 2.4% 462 36.2% 1 30.5 90.6
JOURNAL 1,528 2.9% 536 35.1% 642 4158.5 15096.2
EXACT JOURNAL 1,002 1.9% 284 28.3% 488 2750.9 16033.0
SUBJECT 7,236 13.6% 3,992 55.2% 946 6252.9 15848.8
EXACT SUBJECT 476 0.9% 227 47.7% 1,320 3720.6 6561.7
KEYWORD 14,521 27.2% 2,237 15.4% 58 2287.1 13547.0
FORM/PUB TYPE 289 0.5% 38 13.1% 46 1805.5 13406.1
DATE 1,945 3.6% 348 17.9% 6 66.8 589.0
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 1 0.0% 0 0.0% 1,059 1059.0 0.0
AUTHOR AFFIL. 46 0.1% 31 67.4% 30 1134.7 3798.7
CONFERENCE 4 0.0% 1 25.0% 483 380.0 310.6
LANGUAGE 153 0.3% 15 9.8% 121 1378.7 3501.1
ISSN 4 0.0% 1 25.0% 50 43.7 18.3
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
ID NUMBER 2 0.0% 2 100% 0 0.0 0.0
PERIODICAL 1,173 2.2% 266 22.7% 3 115.0 1158.0
EXACT PE 253 0.5% 48 19.0% 2 42.0 421.2
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 304 0.6% 96 31.6% 43 1499.6 8107.9
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 4,856 10.1% 1,271 26.2% 7 273.0 3804.3
Single 43,373 89.9% 11,332 26.1% 39 1746.6 10557.1
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 261 91.6% 90 34.5% 2 6.4 10.6
EXACT SUBJECT 24 8.4% 12 50.0% 1 2.7 2.7
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.4%
SHORT 91.6%
LONG 1.2%
TAGS 0.1%
FIELDS 1.0%
BROWSE REVIEW 0.2%
BROWSE LONG 0.1%
PERIODICALS 2.1%
COMMENTS 0.0%
Other 2.3%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 11.8%
Ten most frequent errors:
1. First word of command is invalid 33.3%
2. NS command - no next screen 27.2%
3. FIND command with invalid index name 9.2%
4. PS command - no previous screen 7.1%
5. DISPLAY command contains invalid word 4.3%
6. Valid command at an inappropriate time 2.6%
7. Search term missing from search command 2.1%
8. NS of SHOW/EXP command-no next screen 1.4%
9. Add-on search, no index name after verb 1.2%
10. Command contains escape or arrow key 1.1%
11. All others 10.6%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 34.0%
2. GUIDE 20.4%
3. FIND (PSY DB) 6.5%
4. COMMANDS (ABI/PSY DBS) 4.8%
5. Unrecognized term 4.0%
6. INDEXES (PSY DB) 3.6%
7. ADDON SEARCH 3.2%
8. DISPLAY (INS/PSY DBS) 3.2%
9. MAIL 1.8%
10. FIND LOCATION 1.8%
11. All others 16.6%
Ten most frequent HELP situations:
1. Help requested from SET DB command 19.0%
2. First word of command is invalid 15.6%
3. DISPLAY command-first of >1 screen 9.4%
4. FIND command with invalid index name 7.6%
5. DISPLAY command - middle of >1 screen 7.3%
6. FIND command with zero results 6.3%
7. DISPLAY command-complete in one screen 5.8%
8. FIND command retrieves >1 book 4.3%
9. DISPLAY command - last of >1 screen 3.3%
10. NS command - no next screen 2.9%
11. All others 18.4%
Ten most frequent SHOW requests:
1. SEARCH 38.0%
2. HISTORY 36.1%
3. MAIL STATUS 13.3%
4. SETTINGS (INS/PSY DBS) 3.0%
5. GLOSSARY 2.6%
6. MAIL SETTINGS 2.4%
7. SYSTEM NEWS 1.1%
8. PSYCINFO NEWS 0.8%
9. PUBLICATION TYPES (PSY DB) 0.5%
10. DISPLAY (MED/INS/PSY DBS) 0.5%
11. All others 1.7%