MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 06/01/99 through 06/30/99
1.0 SUMMARY STATISTICS
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1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 421 897 1,318
Davis 815 28 843
Irvine 1,099 0 1,099
Los Angeles 946 1,625 2,571
Riverside 430 213 643
San Diego 73 664 737
San Francisco 571 6 577
Santa Barbara 391 649 1,040
Santa Cruz 411 233 644
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 12 153 165
Other-Network UC n/a 825 825
_______ ______ _____
5,169 5,293 10,462
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 120 668 4,545
2-4 a.m. 49 183 1,682
4-6 a.m. 35 210 1,926
6-8 a.m. 151 641 9,349
8-10 a.m. 844 3,152 27,206
10-12 a.m. 1,731 6,989 71,067
12-2 p.m. 2,018 8,454 95,323
2-4 p.m. 2,227 10,004 104,922
4-6 p.m. 1,461 6,704 79,946
6-8 p.m. 774 3,437 42,204
8-10 p.m. 633 2,949 33,353
10-12 p.m. 419 1,880 21,422
__________ __________ __________ _________________
Total: 10,462 45,271 492,945
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 1,945 3,895 5,840
Davis 3,153 82 3,235
Irvine 4,938 0 4,938
Los Angeles 4,513 7,244 11,757
Riverside 2,201 677 2,878
San Diego 264 2,323 2,587
San Francisco 1,884 21 1,905
Santa Barbara 2,093 3,189 5,282
Santa Cruz 1,925 983 2,908
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 20 596 616
Other-Network UC n/a 3,325 3,325
_______ ______ _____
22,936 22,335 45,271
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 26,618 48,513 75,131
Davis 31,968 953 32,921
Irvine 46,798 0 46,798
Los Angeles 61,233 80,166 141,399
Riverside 13,676 6,810 20,486
San Diego 1,671 24,282 25,953
San Francisco 20,321 177 20,498
Santa Barbara 19,983 32,101 52,084
Santa Cruz 17,011 10,688 27,699
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 98 11,497 11,595
Other-Network UC n/a 38,381 38,381
_______ ______ _____
239,377 253,568 492,945
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 2.1
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) 9:57
Average session length (minutes:seconds) 15:42
Longest session recorded (minutes:seconds) 763:08
Average number of searches completed per session 4.3
Retrievals per search - median 11.0
Retrievals per search - average 1180.5
Retrievals per search - standard deviation 9220.3
Percent of searches completed with 0 results 23.6%
Percent of searches entered that are long 2.4%
Percent of long searches completed
(includes partial results) 53.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 39,820 27.7%
DISPLAY (excluding automatic displays) 63,698 44.4%
BROWSE 232 0.2%
SELECT 44 0.0%
HELP 2,344 1.6%
EXPLAIN 2,514 1.8%
SET/RESET 2,901 2.0%
SHOW 583 0.4%
ADD ON (AND, OR, AND NOT) 5,440 3.8%
LOGON or LOGOFF 15,447 10.8%
COMMENT 2 0.0%
SAVE 6,138 4.3%
USE 35 0.0%
OTHER 4,683 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 15,233 34.7% 3,115 20.4% 17 68.5 216.7
TITLE WORD 4,105 9.3% 1,274 31.0% 10 123.9 842.9
EXACT TITLE 845 1.9% 350 41.4% 1 19.9 71.7
JOURNAL 1,149 2.6% 287 25.0% 527 3685.2 16886.7
EXACT JOURNAL 571 1.3% 159 27.8% 531 3217.9 17622.2
SUBJECT 4,832 11.0% 2,562 53.0% 838 6920.3 17813.7
EXACT SUBJECT 284 0.6% 160 56.3% 450 4239.5 10520.1
KEYWORD 13,185 30.0% 1,941 14.7% 65 2277.5 13121.1
FORM/PUB TYPE 165 0.4% 15 9.1% 43 1936.7 7764.6
DATE 2,043 4.7% 350 17.1% 5 39.7 276.2
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 7 0.0% 2 28.6% 92 108.4 22.5
AUTHOR AFFIL. 22 0.1% 5 22.7% 268 2276.2 4637.6
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 131 0.3% 13 9.9% 46 551.2 1719.6
ISSN 4 0.0% 1 25.0% 188842 125923 108978
ISBN 1 0.0% 1 100% 0 0.0 0.0
ID NUMBER 6 0.0% 6 100% 0 0.0 0.0
PERIODICAL 839 1.9% 202 24.1% 3 344.2 2808.9
EXACT PE 208 0.5% 37 17.8% 3 40.9 197.7
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 291 0.7% 49 16.8% 40 2063.1 7895.1
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 4,306 11.0% 988 22.9% 6 160.9 1232.5
Single 35,007 89.0% 8,489 24.2% 40 1810.8 11047.1
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 213 91.8% 48 22.5% 1 4.8 9.1
EXACT SUBJECT 19 8.2% 14 73.7% 1 1.4 0.5
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.1%
SHORT 90.5%
LONG 0.9%
TAGS 0.2%
FIELDS 1.1%
BROWSE REVIEW 0.2%
BROWSE LONG 0.1%
PERIODICALS 1.6%
COMMENTS 0.0%
Other 4.2%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.3%
Ten most frequent errors:
1. First word of command is invalid 32.0%
2. NS command - no next screen 29.0%
3. FIND command with invalid index name 8.7%
4. PS command - no previous screen 5.8%
5. DISPLAY command contains invalid word 4.7%
6. Valid command at an inappropriate time 2.9%
7. Search term missing from search command 1.8%
8. DISPLAY command-record numbers too large 1.5%
9. Command contains escape or arrow key 1.3%
10. Add-on search, no index name after verb 1.2%
11. All others 11.1%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 27.0%
2. GUIDE 20.5%
3. FIND (PSY DB) 8.2%
4. COMMANDS (ABI/PSY DBS) 6.4%
5. Unrecognized term 4.7%
6. INDEXES (PSY DB) 3.6%
7. DISPLAY (INS/PSY DBS) 3.1%
8. ADDON SEARCH 2.9%
9. MAIL 2.7%
10. MAGS TEXT 1.9%
11. All others 18.8%
Ten most frequent HELP situations:
1. Help requested from SET DB command 19.7%
2. First word of command is invalid 14.7%
3. DISPLAY command-first of >1 screen 8.3%
4. FIND command with invalid index name 7.0%
5. DISPLAY command - middle of >1 screen 6.5%
6. FIND command with zero results 5.6%
7. DISPLAY command-complete in one screen 5.4%
8. FIND command retrieves >1 book 4.8%
9. DISPLAY command - last of >1 screen 3.0%
10. PS command - no previous screen 2.9%
11. All others 22.0%
Ten most frequent SHOW requests:
1. HISTORY 40.0%
2. SEARCH 34.5%
3. MAIL STATUS 7.5%
4. SETTINGS (INS/PSY DBS) 5.7%
5. PSYCINFO NEWS 4.3%
6. GLOSSARY 2.0%
7. MAIL SETTINGS 1.8%
8. SYSTEM NEWS 1.3%
9. DISPLAY (MED/INS/PSY DBS) 0.9%
10. TIMEOUT SETTING 0.5%
11. All others 1.4%