MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 04/01/00 through 04/30/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,015 1,185 2,200
Davis 444 14 458
Irvine 530 0 530
Los Angeles 282 825 1,107
Riverside 193 193 386
San Diego 65 472 537
San Francisco 316 0 316
Santa Barbara 116 472 588
Santa Cruz 285 222 507
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 9 260 269
Other-Network UC n/a 894 894
_______ ______ _____
3,255 4,537 7,792
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 99 527 4,516
2-4 a.m. 44 217 2,894
4-6 a.m. 40 162 1,776
6-8 a.m. 123 394 3,793
8-10 a.m. 641 2,071 22,632
10-12 a.m. 1,274 4,361 45,729
12-2 p.m. 1,425 5,605 62,180
2-4 p.m. 1,712 6,511 79,487
4-6 p.m. 1,145 4,433 54,852
6-8 p.m. 556 2,493 30,459
8-10 p.m. 450 2,194 25,349
10-12 p.m. 283 1,234 13,060
__________ __________ __________ _________________
Total: 7,792 30,202 346,727
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 4,328 4,617 8,945
Davis 1,637 56 1,693
Irvine 1,837 0 1,837
Los Angeles 1,433 3,398 4,831
Riverside 651 709 1,360
San Diego 153 1,418 1,571
San Francisco 1,091 0 1,091
Santa Barbara 629 1,853 2,482
Santa Cruz 1,207 1,036 2,243
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 16 1,076 1,092
Other-Network UC n/a 3,057 3,057
_______ ______ _____
12,982 17,220 30,202
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 54,143 51,835 105,978
Davis 13,734 464 14,198
Irvine 17,395 0 17,395
Los Angeles 21,137 41,015 62,152
Riverside 6,016 7,542 13,558
San Diego 489 15,427 15,916
San Francisco 13,198 0 13,198
Santa Barbara 5,750 20,706 26,456
Santa Cruz 12,308 9,803 22,111
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 792 11,525 12,317
Other-Network UC n/a 43,448 43,448
_______ ______ _____
144,962 201,765 346,727
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 2.3
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) 9:52
Average session length (minutes:seconds) 14:59
Longest session recorded (minutes:seconds) 496:21
Average number of searches completed per session 3.8
Retrievals per search - median 11.0
Retrievals per search - average 984.8
Retrievals per search - standard deviation 7684.7
Percent of searches completed with 0 results 22.6%
Percent of searches entered that are long 2.8%
Percent of long searches completed
(includes partial results) 58.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 26,990 27.2%
DISPLAY (excluding automatic displays) 42,857 43.2%
BROWSE 150 0.2%
SELECT 59 0.1%
HELP 1,681 1.7%
EXPLAIN 1,760 1.8%
SET/RESET 2,150 2.2%
SHOW 368 0.4%
ADD ON (AND, OR, AND NOT) 3,184 3.2%
LOGON or LOGOFF 11,599 11.7%
COMMENT 0 0.0%
SAVE 5,312 5.4%
USE 15 0.0%
OTHER 3,286 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 11,119 37.0% 2,177 19.6% 16 68.2 202.4
TITLE WORD 3,249 10.8% 925 28.5% 11 140.7 848.1
EXACT TITLE 611 2.0% 247 40.4% 1 22.0 145.4
JOURNAL 611 2.0% 183 29.9% 439 3153.3 14963.6
EXACT JOURNAL 341 1.1% 97 28.4% 719 1656.0 2496.9
SUBJECT 3,367 11.2% 1,699 50.5% 841 6148.3 16141.0
EXACT SUBJECT 245 0.8% 103 42.0% 532 3466.8 7527.2
KEYWORD 7,847 26.1% 1,084 13.8% 67 2107.3 12722.5
FORM/PUB TYPE 131 0.4% 17 13.0% 39 587.6 1854.8
DATE 1,561 5.2% 242 15.5% 6 84.1 311.3
ADDED 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 2 0.0% 1 50.0% 834 834.0 0.0
AUTHOR AFFIL. 23 0.1% 8 34.8% 1,150 2097.4 3270.3
CONFERENCE 1 0.0% 0 0.0% 6 6.0 0.0
LANGUAGE 47 0.2% 4 8.5% 101 7947.0 40271.3
ISSN 2 0.0% 2 100% 0 0.0 0.0
ISBN 1 0.0% 1 100% 0 0.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 624 2.1% 122 19.6% 3 141.0 1197.0
EXACT PE 75 0.2% 13 17.3% 2 28.2 154.0
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 171 0.6% 51 29.8% 94 928.3 4111.3
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 3,258 12.2% 717 22.0% 6 223.3 5291.1
Single 23,384 87.8% 5,520 23.6% 40 1526.7 9540.2
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 144 96.0% 42 29.2% 3 5.3 7.8
EXACT SUBJECT 6 4.0% 5 83.3% 1 1.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.5%
SHORT 91.6%
LONG 0.9%
TAGS 0.1%
FIELDS 1.3%
BROWSE REVIEW 0.2%
BROWSE LONG 0.1%
PERIODICALS 2.0%
COMMENTS 0.0%
Other 2.3%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.8%
Ten most frequent errors:
1. First word of command is invalid 33.1%
2. NS command - no next screen 28.1%
3. FIND command with invalid index name 8.9%
4. PS command - no previous screen 6.1%
5. DISPLAY command contains invalid word 4.9%
6. Valid command at an inappropriate time 2.5%
7. Search term missing from search command 1.9%
8. Add-on search, no index name after verb 1.3%
9. NS of SHOW/EXP command-no next screen 1.3%
10. DISPLAY command-record numbers too large 1.2%
11. All others 10.6%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 33.5%
2. GUIDE 17.0%
3. FIND (PSY DB) 7.0%
4. COMMANDS (ABI/PSY DBS) 5.8%
5. Unrecognized term 5.7%
6. INDEXES (PSY DB) 4.3%
7. ADDON SEARCH 3.8%
8. MAIL 2.7%
9. DISPLAY (INS/PSY DBS) 2.0%
10. SEARCH (PSY DB) 1.6%
11. All others 16.5%
Ten most frequent HELP situations:
1. Help requested from SET DB command 18.1%
2. First word of command is invalid 15.5%
3. DISPLAY command-first of >1 screen 9.9%
4. FIND command with invalid index name 8.3%
5. DISPLAY command - middle of >1 screen 7.1%
6. FIND command with zero results 5.8%
7. DISPLAY command-complete in one screen 5.0%
8. FIND command retrieves >1 book 4.9%
9. DISPLAY command - last of >1 screen 3.5%
10. NS command - no next screen 3.1%
11. All others 19.0%
Ten most frequent SHOW requests:
1. HISTORY 45.1%
2. SEARCH 36.6%
3. MAIL STATUS 6.8%
4. GLOSSARY 2.8%
5. SETTINGS (INS/PSY DBS) 2.5%
6. MAIL SETTINGS 2.3%
7. PUBLICATION TYPES (PSY DB) 0.3%
8. LANGUAGE CODES (PSY DB) 0.3%
9. PSYCINFO NEWS 0.3%
10. PSYCINFO STATISTICS 0.3%
11. All others 2.8%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)