MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 06/01/00 through 06/30/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 284 683 967
Davis 408 22 430
Irvine 409 0 409
Los Angeles 349 663 1,012
Riverside 105 202 307
San Diego 84 513 597
San Francisco 277 0 277
Santa Barbara 86 436 522
Santa Cruz 90 115 205
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 12 132 144
Other-Network UC n/a 679 679
_______ ______ _____
2,104 3,445 5,549
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 61 350 4,607
2-4 a.m. 29 187 1,388
4-6 a.m. 22 73 665
6-8 a.m. 95 303 3,777
8-10 a.m. 486 1,413 13,766
10-12 a.m. 1,020 3,575 36,700
12-2 p.m. 1,008 3,903 42,028
2-4 p.m. 1,220 5,054 51,048
4-6 p.m. 846 3,440 34,503
6-8 p.m. 317 1,360 16,440
8-10 p.m. 273 1,151 13,320
10-12 p.m. 172 864 10,544
__________ __________ __________ _________________
Total: 5,549 21,673 228,786
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 1,308 2,190 3,498
Davis 1,679 144 1,823
Irvine 1,711 0 1,711
Los Angeles 1,527 2,904 4,431
Riverside 323 1,050 1,373
San Diego 248 1,631 1,879
San Francisco 1,116 0 1,116
Santa Barbara 252 1,638 1,890
Santa Cruz 468 422 890
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 56 440 496
Other-Network UC n/a 2,566 2,566
_______ ______ _____
8,688 12,985 21,673
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 12,765 26,337 39,102
Davis 16,168 718 16,886
Irvine 17,189 0 17,189
Los Angeles 19,370 33,319 52,689
Riverside 3,774 11,660 15,434
San Diego 1,329 15,268 16,597
San Francisco 14,515 0 14,515
Santa Barbara 2,426 16,028 18,454
Santa Cruz 4,248 3,412 7,660
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 256 4,868 5,124
Other-Network UC n/a 25,136 25,136
_______ ______ _____
92,040 136,746 228,786
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.8
Standard deviation in seconds 2.0
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) 8:49
Average session length (minutes:seconds) 13:49
Longest session recorded (minutes:seconds) 469:15
Average number of searches completed per session 3.9
Retrievals per search - median 11.0
Retrievals per search - average 1057.3
Retrievals per search - standard deviation 8945.2
Percent of searches completed with 0 results 21.3%
Percent of searches entered that are long 3.0%
Percent of long searches completed
(includes partial results) 57.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 19,027 28.2%
DISPLAY (excluding automatic displays) 29,428 43.6%
BROWSE 76 0.1%
SELECT 13 0.0%
HELP 799 1.2%
EXPLAIN 833 1.2%
SET/RESET 1,656 2.5%
SHOW 192 0.3%
ADD ON (AND, OR, AND NOT) 2,644 3.9%
LOGON or LOGOFF 7,996 11.9%
COMMENT 0 0.0%
SAVE 2,658 3.9%
USE 11 0.0%
OTHER 2,229 3.3%
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 8,608 41.1% 1,585 18.4% 16 66.8 253.0
TITLE WORD 2,353 11.2% 672 28.6% 13 168.6 1317.1
EXACT TITLE 314 1.5% 139 44.3% 2 12.5 31.3
JOURNAL 515 2.5% 130 25.2% 447 3928.2 16720.5
EXACT JOURNAL 198 0.9% 52 26.3% 538 1909.8 3328.4
SUBJECT 1,786 8.5% 879 49.2% 883 8880.0 22267.3
EXACT SUBJECT 130 0.6% 58 44.6% 2,644 4288.6 6103.1
KEYWORD 5,162 24.7% 711 13.8% 53 2326.2 15290.2
FORM/PUB TYPE 73 0.3% 6 8.2% 24 199.8 516.4
DATE 1,001 4.8% 141 14.1% 5 50.3 274.2
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 2 0.0% 0 0.0% 1,266 1266.0 1596.6
AUTHOR AFFIL. 9 0.0% 2 22.2% 635 1951.1 2201.5
CONFERENCE 5 0.0% 5 100% 0 0.0 0.0
LANGUAGE 45 0.2% 6 13.3% 192 1478.7 6250.5
ISSN 2 0.0% 0 0.0% 11,122 11121.5 15500.5
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
ID NUMBER 29 0.1% 29 100% 0 0.0 0.0
PERIODICAL 532 2.5% 110 20.7% 4 120.5 906.9
EXACT PE 80 0.4% 10 12.5% 2 14.4 42.9
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 80 0.4% 37 46.2% 96 2695.9 8340.0
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 2,056 10.9% 427 20.8% 6 104.7 1063.2
Single 16,731 89.1% 3,698 22.1% 34 1628.5 11338.7
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 73 96.1% 20 27.4% 10 13.7 17.4
EXACT SUBJECT 3 3.9% 1 33.3% 2 2.0 1.4
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.4%
SHORT 89.8%
LONG 1.4%
TAGS 0.0%
FIELDS 1.2%
BROWSE REVIEW 0.2%
BROWSE LONG 0.1%
PERIODICALS 2.5%
COMMENTS 0.0%
Other 2.4%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.5%
Ten most frequent errors:
1. NS command - no next screen 34.4%
2. First word of command is invalid 28.2%
3. FIND command with invalid index name 8.6%
4. DISPLAY command contains invalid word 5.0%
5. PS command - no previous screen 4.9%
6. Valid command at an inappropriate time 2.2%
7. DISPLAY command-record numbers too large 2.0%
8. Search term missing from search command 1.9%
9. Add-on search, no index name after verb 1.7%
10. DISPLAY command - no FIND results 1.0%
11. All others 10.2%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 25.5%
2. GUIDE 21.8%
3. COMMANDS (ABI/PSY DBS) 9.2%
4. FIND (PSY DB) 8.4%
5. Unrecognized term 5.5%
6. INDEXES (PSY DB) 4.0%
7. ADDON SEARCH 2.6%
8. DISPLAY (INS/PSY DBS) 2.5%
9. MAIL 1.3%
10. LOCATIONS 1.3%
11. All others 17.8%
Ten most frequent HELP situations:
1. Help requested from SET DB command 21.7%
2. First word of command is invalid 11.3%
3. DISPLAY command-first of >1 screen 8.8%
4. FIND command with invalid index name 7.4%
5. DISPLAY command - middle of >1 screen 6.2%
6. FIND command with zero results 5.9%
7. FIND command retrieves >1 book 5.4%
8. DISPLAY command-complete in one screen 5.1%
9. NS command - no next screen 3.6%
10. DISPLAY command - last of >1 screen 3.1%
11. All others 21.6%
Ten most frequent SHOW requests:
1. HISTORY 48.9%
2. SEARCH 40.7%
3. GLOSSARY 3.8%
4. MAIL STATUS 3.8%
5. SETTINGS (INS/PSY DBS) 0.5%
6. PUBLICATION TYPES (PSY DB) 0.5%
7. PSYCINFO NEWS 0.5%
8. 0204 0.5%
9. SYSTEM NEWS 0.5%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)