MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 12/23/00 through 12/29/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 0 61 61
Davis 25 0 25
Irvine 15 0 15
Los Angeles 13 55 68
Riverside 4 4 8
San Diego 1 43 44
San Francisco 17 0 17
Santa Barbara 1 55 56
Santa Cruz 0 17 17
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 5 5
Other-Network UC n/a 42 42
_______ ______ _____
76 282 358
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 4 24 442
2-4 a.m. 1 1 2
4-6 a.m. 2 3 3
6-8 a.m. 8 63 495
8-10 a.m. 38 107 1,287
10-12 a.m. 96 319 5,575
12-2 p.m. 65 322 3,908
2-4 p.m. 57 219 2,442
4-6 p.m. 42 202 1,458
6-8 p.m. 17 142 1,665
8-10 p.m. 18 80 1,112
10-12 p.m. 10 32 352
__________ __________ __________ _________________
Total: 358 1,514 18,741
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 0 268 268
Davis 98 0 98
Irvine 63 0 63
Los Angeles 34 220 254
Riverside 7 12 19
San Diego 7 133 140
San Francisco 48 0 48
Santa Barbara 2 289 291
Santa Cruz 0 148 148
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 24 24
Other-Network UC n/a 161 161
_______ ______ _____
259 1,255 1,514
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 0 2,254 2,254
Davis 1,219 0 1,219
Irvine 584 0 584
Los Angeles 430 2,932 3,362
Riverside 370 129 499
San Diego 74 1,191 1,265
San Francisco 1,773 0 1,773
Santa Barbara 3 4,422 4,425
Santa Cruz 0 1,384 1,384
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 866 866
Other-Network UC n/a 1,110 1,110
_______ ______ _____
4,453 14,288 18,741
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.6
Standard deviation in seconds 1.5
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) 7:42
Average session length (minutes:seconds) 13:54
Longest session recorded (minutes:seconds) 126:46
Average number of searches completed per session 4.2
Retrievals per search - median 11.0
Retrievals per search - average 264.2
Retrievals per search - standard deviation 1721.2
Percent of searches completed with 0 results 19.9%
Percent of searches entered that are long 2.8%
Percent of long searches completed
(includes partial results) 57.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,278 25.1%
DISPLAY (excluding automatic displays) 2,383 46.7%
BROWSE 0 0.0%
SELECT 0 0.0%
HELP 33 0.6%
EXPLAIN 36 0.7%
SET/RESET 103 2.0%
SHOW 27 0.5%
ADD ON (AND, OR, AND NOT) 236 4.6%
LOGON or LOGOFF 529 10.4%
COMMENT 0 0.0%
SAVE 321 6.3%
USE 0 0.0%
OTHER 155 3.0%
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 728 49.2% 139 19.1% 18 58.6 153.3
TITLE WORD 145 9.8% 51 35.2% 11 117.4 691.3
EXACT TITLE 3 0.2% 1 33.3% 56 55.5 72.8
JOURNAL 29 2.0% 5 17.2% 254 1417.9 4985.7
EXACT JOURNAL 22 1.5% 7 31.8% 564 1471.3 2000.5
SUBJECT 86 5.8% 25 29.1% 101 1531.2 5504.1
EXACT SUBJECT 1 0.1% 0 0.0% 54 54.0 0.0
KEYWORD 353 23.9% 52 14.7% 42 664.7 2362.5
FORM/PUB TYPE 13 0.9% 1 7.7% 39 78.5 76.4
DATE 66 4.5% 21 31.8% 5 506.5 1754.0
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. 2 0.1% 2 100% 0 0.0 0.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 8 0.5% 0 0.0% 94 99.8 68.4
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
ID NUMBER 1 0.1% 0 0.0% 1 1.0 0.0
PERIODICAL 13 0.9% 5 38.5% 2 47.3 128.8
EXACT PE 0 0.0% 0 0.0% 0 0.0 0.0
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 9 0.6% 4 44.4% 75 59.6 30.3
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 195 15.4% 53 27.2% 10 211.6 1019.3
Single 1,069 84.6% 206 19.3% 29 415.7 2215.3
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 0 0.0% 0 0.0% 0.0 0.0 0.0
EXACT SUBJECT 0 0.0% 0 0.0% 0.0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.6%
SHORT 89.5%
LONG 0.3%
TAGS 0.7%
FIELDS 3.2%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 0.7%
COMMENTS 0.0%
Other 3.1%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 7.3%
Ten most frequent errors:
1. NS command - no next screen 35.8%
2. First word of command is invalid 27.6%
3. FIND command with invalid index name 6.7%
4. Valid command at an inappropriate time 2.7%
5. PS command - no previous screen 2.5%
6. DISPLAY command contains invalid word 2.2%
7. DISPLAY command-record numbers too large 2.0%
8. DISPLAY command - no FIND results 1.7%
9. Search term missing from search command 1.7%
10. NS of SHOW/EXP command-no next screen 1.7%
11. All others 15.2%
Ten most frequent EXPLAIN requests:
1. COMMANDS (ABI/PSY DBS) 11.1%
2. GUIDE 8.3%
3. DISPLAY (INS/PSY DBS) 8.3%
4. FIND (PSY DB) 8.3%
5. DATE (PSY DB) 8.3%
6. MAIL 5.6%
7. LOCATE (INS/PSY DBS) 5.6%
8. INDEXES (PSY DB) 5.6%
9. P145 5.6%
10. DATABASES 5.6%
11. All others 27.8%
Ten most frequent HELP situations:
1. Help requested from SET DB command 18.8%
2. First word of command is invalid 13.0%
3. DISPLAY command - middle of >1 screen 13.0%
4. FIND command with invalid index name 11.6%
5. DISPLAY command-first of >1 screen 11.6%
6. NS command - no next screen 2.9%
7. DISPLAY command-complete in one screen 2.9%
8. 342 2.9%
9. 15 1.4%
10. DISPLAY command - no FIND results 1.4%
11. All others 20.3%
Ten most frequent SHOW requests:
1. HISTORY 73.1%
2. SEARCH 19.2%
3. PUBLICATION TYPES (PSY DB) 3.8%
4. SYSTEM NEWS 3.8%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)