MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 12/01/99 through 12/31/99
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 520 876 1,396
Davis 546 24 570
Irvine 508 0 508
Los Angeles 548 906 1,454
Riverside 113 99 212
San Diego 87 564 651
San Francisco 322 0 322
Santa Barbara 126 571 697
Santa Cruz 207 213 420
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 46 165 211
Other-Network UC n/a 718 718
_______ ______ _____
3,023 4,136 7,159
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 105 442 7,707
2-4 a.m. 46 125 1,166
4-6 a.m. 52 150 1,467
6-8 a.m. 122 384 4,992
8-10 a.m. 594 2,092 19,682
10-12 a.m. 1,284 4,978 52,872
12-2 p.m. 1,293 5,343 77,496
2-4 p.m. 1,576 6,461 70,483
4-6 p.m. 916 3,960 49,731
6-8 p.m. 507 2,230 28,810
8-10 p.m. 403 1,922 20,489
10-12 p.m. 261 1,434 14,711
__________ __________ __________ _________________
Total: 7,159 29,521 349,606
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 2,260 3,278 5,538
Davis 1,857 65 1,922
Irvine 1,908 0 1,908
Los Angeles 2,534 4,626 7,160
Riverside 517 345 862
San Diego 231 2,215 2,446
San Francisco 1,316 0 1,316
Santa Barbara 559 2,527 3,086
Santa Cruz 1,241 753 1,994
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 143 610 753
Other-Network UC n/a 2,536 2,536
_______ ______ _____
12,566 16,955 29,521
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 25,917 37,139 63,056
Davis 19,114 687 19,801
Irvine 19,195 0 19,195
Los Angeles 37,167 51,989 89,156
Riverside 4,346 3,123 7,469
San Diego 2,422 22,000 24,422
San Francisco 12,987 0 12,987
Santa Barbara 4,828 26,737 31,565
Santa Cruz 13,910 9,102 23,012
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 353 8,877 9,230
Other-Network UC n/a 49,713 49,713
_______ ______ _____
140,239 209,367 349,606
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 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 0.2
2.0 PSYCINFO Database Detailed Statistics
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Median session length (minutes:seconds) 9:10
Average session length (minutes:seconds) 14:30
Longest session recorded (minutes:seconds) 834:33
Average number of searches completed per session 4.1
Retrievals per search - median 10.0
Retrievals per search - average 799.8
Retrievals per search - standard deviation 6267.3
Percent of searches completed with 0 results 22.8%
Percent of searches entered that are long 3.2%
Percent of long searches completed
(includes partial results) 56.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 26,361 27.7%
DISPLAY (excluding automatic displays) 41,965 44.0%
BROWSE 104 0.1%
SELECT 46 0.0%
HELP 1,341 1.4%
EXPLAIN 1,582 1.7%
SET/RESET 2,147 2.3%
SHOW 418 0.4%
ADD ON (AND, OR, AND NOT) 3,151 3.3%
LOGON or LOGOFF 10,303 10.8%
COMMENT 1 0.0%
SAVE 5,064 5.3%
USE 27 0.0%
OTHER 2,937 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 12,255 42.2% 2,406 19.6% 16 61.4 182.3
TITLE WORD 3,168 10.9% 1,027 32.4% 9 138.9 1092.7
EXACT TITLE 413 1.4% 168 40.7% 1 29.6 96.6
JOURNAL 688 2.4% 221 32.1% 581 3266.0 12866.1
EXACT JOURNAL 308 1.1% 75 24.3% 635 2734.0 14444.2
SUBJECT 2,361 8.1% 1,256 53.2% 2,153 7371.9 15364.6
EXACT SUBJECT 188 0.6% 75 39.9% 776 2532.5 4578.0
KEYWORD 7,352 25.3% 1,145 15.6% 61 1490.9 7498.9
FORM/PUB TYPE 118 0.4% 11 9.3% 37 503.0 1769.2
DATE 1,353 4.7% 242 17.9% 5 58.2 322.0
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. 8 0.0% 3 37.5% 114 243.4 380.9
CONFERENCE 1 0.0% 1 100% 0 0.0 0.0
LANGUAGE 59 0.2% 8 13.6% 73 1073.5 5045.5
ISSN 94 0.3% 2 2.1% 941 1716.1 2131.4
ISBN 1 0.0% 0 0.0% 6 6.0 0.0
ID NUMBER 1 0.0% 1 100% 0 0.0 0.0
PERIODICAL 482 1.7% 113 23.4% 5 93.5 661.1
EXACT PE 70 0.2% 16 22.9% 2 37.5 166.2
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 114 0.4% 34 29.8% 43 4431.7 13887.4
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 2,946 11.3% 756 25.7% 5 111.5 1073.9
Single 23,014 88.6% 5,254 22.8% 36 1181.3 6759.1
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 90 86.5% 28 31.1% 3 6.3 9.2
EXACT SUBJECT 14 13.5% 7 50.0% 1 9.6 16.5
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.1%
SHORT 91.1%
LONG 1.1%
TAGS 0.1%
FIELDS 1.3%
BROWSE REVIEW 0.2%
BROWSE LONG 0.1%
PERIODICALS 1.6%
COMMENTS 0.0%
Other 2.4%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.1%
Ten most frequent errors:
1. NS command - no next screen 30.7%
2. First word of command is invalid 30.7%
3. FIND command with invalid index name 9.0%
4. PS command - no previous screen 5.7%
5. DISPLAY command contains invalid word 4.7%
6. Valid command at an inappropriate time 2.7%
7. Search term missing from search command 2.0%
8. DISPLAY command-record numbers too large 1.4%
9. Add-on search, no index name after verb 1.2%
10. DISPLAY command - no FIND results 1.1%
11. All others 10.8%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 29.6%
2. GUIDE 17.3%
3. FIND (PSY DB) 9.7%
4. COMMANDS (ABI/PSY DBS) 6.1%
5. INDEXES (PSY DB) 4.6%
6. Unrecognized term 4.5%
7. DISPLAY (INS/PSY DBS) 3.2%
8. ADDON SEARCH 2.7%
9. FIND LOCATION 1.8%
10. SEARCH (PSY DB) 1.7%
11. All others 18.9%
Ten most frequent HELP situations:
1. Help requested from SET DB command 19.0%
2. First word of command is invalid 15.1%
3. DISPLAY command - middle of >1 screen 8.2%
4. FIND command with invalid index name 7.5%
5. DISPLAY command-first of >1 screen 7.5%
6. FIND command with zero results 5.4%
7. DISPLAY command-complete in one screen 5.1%
8. FIND command retrieves >1 book 5.0%
9. NS command - no next screen 3.7%
10. DISPLAY command - last of >1 screen 3.5%
11. All others 20.1%
Ten most frequent SHOW requests:
1. HISTORY 48.2%
2. SEARCH 35.7%
3. MAIL STATUS 7.0%
4. PSYCINFO NEWS 1.6%
5. GLOSSARY 1.6%
6. MAIL SETTINGS 1.0%
7. SETTINGS (INS/PSY DBS) 0.8%
8. SYSTEM NEWS 0.5%
9. DISPLAY (MED/INS/PSY DBS) 0.5%
10. PUBLICATION TYPES (PSY DB) 0.3%
11. All others 2.9%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)