MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 08/01/00 through 08/31/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 138 656 794
Davis 358 6 364
Irvine 317 0 317
Los Angeles 242 535 777
Riverside 81 141 222
San Diego 40 472 512
San Francisco 319 0 319
Santa Barbara 55 338 393
Santa Cruz 44 130 174
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 4 152 156
Other-Network UC n/a 528 528
_______ ______ _____
1,598 2,958 4,556
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 39 161 1,955
2-4 a.m. 18 98 900
4-6 a.m. 17 86 933
6-8 a.m. 102 328 2,653
8-10 a.m. 423 1,466 13,898
10-12 a.m. 831 2,936 32,501
12-2 p.m. 936 3,276 32,402
2-4 p.m. 956 3,464 33,234
4-6 p.m. 663 2,805 28,990
6-8 p.m. 236 913 10,258
8-10 p.m. 198 757 10,832
10-12 p.m. 137 610 13,943
__________ __________ __________ _________________
Total: 4,556 16,900 182,499
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 465 2,445 2,910
Davis 1,387 12 1,399
Irvine 1,062 0 1,062
Los Angeles 952 2,080 3,032
Riverside 379 572 951
San Diego 98 1,648 1,746
San Francisco 1,044 0 1,044
Santa Barbara 242 1,367 1,609
Santa Cruz 212 461 673
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 12 570 582
Other-Network UC n/a 1,892 1,892
_______ ______ _____
5,853 11,047 16,900
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 6,891 33,509 40,400
Davis 12,869 62 12,931
Irvine 12,839 0 12,839
Los Angeles 11,177 19,478 30,655
Riverside 3,497 5,213 8,710
San Diego 451 15,115 15,566
San Francisco 12,657 0 12,657
Santa Barbara 1,905 12,872 14,777
Santa Cruz 1,798 3,546 5,344
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 22 7,528 7,550
Other-Network UC n/a 21,070 21,070
_______ ______ _____
64,106 118,393 182,499
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.4
Standard deviation in seconds 1.1
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) 7:41
Average session length (minutes:seconds) 14:07
Longest session recorded (minutes:seconds) 810:13
Average number of searches completed per session 3.7
Retrievals per search - median 10.0
Retrievals per search - average 593.1
Retrievals per search - standard deviation 5513.7
Percent of searches completed with 0 results 20.4%
Percent of searches entered that are long 3.4%
Percent of long searches completed
(includes partial results) 61.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 14,994 27.9%
DISPLAY (excluding automatic displays) 23,108 43.0%
BROWSE 35 0.1%
SELECT 8 0.0%
HELP 430 0.8%
EXPLAIN 489 0.9%
SET/RESET 1,482 2.8%
SHOW 169 0.3%
ADD ON (AND, OR, AND NOT) 1,903 3.5%
LOGON or LOGOFF 6,462 12.0%
COMMENT 1 0.0%
SAVE 2,971 5.5%
USE 10 0.0%
OTHER 1,687 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 7,586 45.7% 1,361 17.9% 16 57.9 167.4
TITLE WORD 1,956 11.8% 585 29.9% 12 188.1 1272.3
EXACT TITLE 244 1.5% 78 32.0% 1 36.4 203.6
JOURNAL 466 2.8% 110 23.6% 532 3408.1 14432.4
EXACT JOURNAL 200 1.2% 44 22.0% 505 1953.1 4233.0
SUBJECT 800 4.8% 422 52.7% 439 3877.2 12633.4
EXACT SUBJECT 58 0.3% 29 50.0% 1,112 4838.8 8475.2
KEYWORD 3,828 23.1% 533 13.9% 50 1636.6 9959.0
FORM/PUB TYPE 54 0.3% 11 20.4% 75 419.0 879.0
DATE 874 5.3% 121 13.8% 5 44.8 231.1
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 1 0.0% 0 0.0% 96 96.0 0.0
AUTHOR AFFIL. 4 0.0% 3 75.0% 2,205 2205.0 0.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 36 0.2% 2 5.6% 25 138.4 321.0
ISSN 2 0.0% 0 0.0% 357 356.5 474.5
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 352 2.1% 63 17.9% 3 75.2 740.8
EXACT PE 57 0.3% 15 26.3% 3 18.0 59.9
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 75 0.5% 21 28.0% 102 3048.6 12382.0
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 1,716 11.6% 339 19.8% 5 75.9 419.8
Single 13,081 88.4% 2,704 20.7% 29 883.7 6859.8
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 24 68.6% 7 29.2% 2 7.3 14.2
EXACT SUBJECT 11 31.4% 7 63.6% 1 1.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.0%
SHORT 91.1%
LONG 1.1%
TAGS 0.1%
FIELDS 1.6%
BROWSE REVIEW 0.1%
BROWSE LONG 0.1%
PERIODICALS 2.4%
COMMENTS 0.0%
Other 1.6%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.8%
Ten most frequent errors:
1. NS command - no next screen 36.6%
2. First word of command is invalid 27.3%
3. FIND command with invalid index name 7.9%
4. PS command - no previous screen 4.9%
5. DISPLAY command contains invalid word 4.6%
6. Search term missing from search command 2.2%
7. Valid command at an inappropriate time 1.9%
8. Add-on search, no index name after verb 1.4%
9. DISPLAY command-record numbers too large 1.4%
10. Command contains escape or arrow key 1.2%
11. All others 10.7%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 26.2%
2. GUIDE 18.2%
3. FIND (PSY DB) 10.4%
4. INDEXES (PSY DB) 5.9%
5. Unrecognized term 5.1%
6. COMMANDS (ABI/PSY DBS) 4.3%
7. MAIL 2.2%
8. DATABASES 2.0%
9. DISPLAY (INS/PSY DBS) 1.8%
10. LOCATE (PE DB) 1.8%
11. All others 21.9%
Ten most frequent HELP situations:
1. Help requested from SET DB command 18.5%
2. First word of command is invalid 14.6%
3. DISPLAY command-first of >1 screen 8.2%
4. FIND command with zero results 5.8%
5. FIND command with invalid index name 5.7%
6. DISPLAY command - middle of >1 screen 5.4%
7. DISPLAY command-complete in one screen 5.1%
8. DISPLAY command - last of >1 screen 4.1%
9. FIND command retrieves >1 book 2.9%
10. F/BR command with invalid search term 2.8%
11. All others 26.9%
Ten most frequent SHOW requests:
1. SEARCH 42.4%
2. HISTORY 41.8%
3. MAIL STATUS 7.0%
4. SETTINGS (INS/PSY DBS) 1.9%
5. GLOSSARY 1.9%
6. MAIL SETTINGS 1.3%
7. BIOSIS STATISTICS 0.6%
8. SYSTEM NEWS 0.6%
9. PAGESIZE 0.6%
10. LOCAL INFORMATION 0.6%
11. All others 1.3%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)