MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 12/08/01 through 12/14/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 18 118 136
Davis 102 0 102
Irvine 31 0 31
Los Angeles 1 90 91
Riverside 2 22 24
San Diego 6 80 86
San Francisco 28 0 28
Santa Barbara 6 37 43
Santa Cruz 0 29 29
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 23 23
Other-Network UC n/a 131 131
_______ ______ _____
194 530 724
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 20 100 1,120
2-4 a.m. 21 267 1,068
4-6 a.m. 5 7 110
6-8 a.m. 6 18 183
8-10 a.m. 66 193 1,643
10-12 a.m. 167 611 4,725
12-2 p.m. 126 369 3,360
2-4 p.m. 141 517 3,312
4-6 p.m. 93 384 2,347
6-8 p.m. 43 193 2,477
8-10 p.m. 25 90 1,004
10-12 p.m. 11 34 453
__________ __________ __________ _________________
Total: 724 2,783 21,802
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 53 530 583
Davis 551 0 551
Irvine 107 0 107
Los Angeles 3 404 407
Riverside 2 82 84
San Diego 29 209 238
San Francisco 143 0 143
Santa Barbara 15 116 131
Santa Cruz 0 110 110
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 75 75
Other-Network UC n/a 354 354
_______ ______ _____
903 1,880 2,783
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 569 5,408 5,977
Davis 2,550 0 2,550
Irvine 1,277 0 1,277
Los Angeles 7 2,594 2,601
Riverside 0 660 660
San Diego 174 2,942 3,116
San Francisco 860 0 860
Santa Barbara 148 1,059 1,207
Santa Cruz 0 1,572 1,572
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 613 613
Other-Network UC n/a 1,369 1,369
_______ ______ _____
5,585 16,217 21,802
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.6
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) 6:38
Average session length (minutes:seconds) 11:50
Longest session recorded (minutes:seconds) 197:24
Average number of searches completed per session 3.8
Retrievals per search - median 5.0
Retrievals per search - average 333.9
Retrievals per search - standard deviation 3577.7
Percent of searches completed with 0 results 26.0%
Percent of searches entered that are long 4.1%
Percent of long searches completed
(includes partial results) 66.1%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,486 33.3%
DISPLAY (excluding automatic displays) 2,917 39.0%
BROWSE 7 0.1%
SELECT 0 0.0%
HELP 24 0.3%
EXPLAIN 33 0.4%
SET/RESET 230 3.1%
SHOW 9 0.1%
ADD ON (AND, OR, AND NOT) 297 4.0%
LOGON or LOGOFF 1,034 13.8%
COMMENT 0 0.0%
SAVE 203 2.7%
USE 0 0.0%
OTHER 243 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 1,404 43.3% 293 20.9% 14 65.4 261.2
TITLE WORD 302 9.3% 91 30.1% 12 125.3 492.4
EXACT TITLE 12 0.4% 4 33.3% 1 2.9 4.5
JOURNAL 35 1.1% 7 20.0% 88 801.5 1549.6
EXACT JOURNAL 17 0.5% 6 35.3% 591 1163.6 1442.0
SUBJECT 88 2.7% 49 55.7% 725 7914.2 13508.8
EXACT SUBJECT 245 7.5% 183 74.7% 1 9.4 17.9
KEYWORD 446 13.7% 68 15.2% 25 951.7 7786.7
FORM/PUB TYPE 7 0.2% 3 42.9% 3 8.3 11.2
DATE 473 14.6% 233 49.3% 3 13.2 33.1
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. 1 0.0% 1 100% 0 0.0 0.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 3 0.1% 0 0.0% 15,663 10454.0 9022.3
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 7 0.2% 0 0.0% 1 1.0 0.0
PERIODICAL 45 1.4% 3 6.7% 4 26.6 54.3
EXACT PE 18 0.6% 6 33.3% 3 6.3 7.1
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 143 4.4% 93 65.0% 1 11.0 19.7
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 609 24.9% 274 45.0% 4 76.3 712.5
Single 1,839 75.1% 380 20.7% 24 540.1 4725.2
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 7 100% 1 14.3% 2 3.8 6.0
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.8%
SHORT 87.9%
LONG 1.1%
TAGS 1.4%
FIELDS 2.7%
BROWSE REVIEW 0.2%
BROWSE LONG 0.1%
PERIODICALS 2.7%
COMMENTS 0.0%
Other 1.1%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.2%
Ten most frequent errors:
1. NS command - no next screen 28.3%
2. DISPLAY command - no FIND results 24.7%
3. First word of command is invalid 17.6%
4. FIND command with invalid index name 8.5%
5. DISPLAY command contains invalid word 4.5%
6. PS command - no previous screen 3.0%
7. Search term missing from search command 2.2%
8. Valid command at an inappropriate time 1.2%
9. DISPLAY command-record numbers too large 1.1%
10. Add-on search, no index name after verb 0.5%
11. All others 8.4%
Ten most frequent EXPLAIN requests:
1. GUIDE 21.2%
2. LOCATE (INS/PSY DBS) 15.2%
3. COMMANDS (ABI/PSY DBS) 9.1%
4. INDEXES (PSY DB) 9.1%
5. FIND (PSY DB) 9.1%
6. MAGS TEXT 6.1%
7. 0518 6.1%
8. FIND LOCATION 3.0%
9. DISPLAY (INS/PSY DBS) 3.0%
10. DATE (PSY DB) 3.0%
11. All others 15.2%
Ten most frequent HELP situations:
1. Help requested from SET DB command 19.3%
2. First word of command is invalid 12.3%
3. DISPLAY command - middle of >1 screen 12.3%
4. FIND command with invalid index name 10.5%
5. DISPLAY command-first of >1 screen 8.8%
6. FIND command with zero results 7.0%
7. DISPLAY command contains invalid word 5.3%
8. NS command - no next screen 5.3%
9. PS command - no previous screen 5.3%
10. SET DB command entered w/o modifier 1.8%
11. All others 12.3%
Ten most frequent SHOW requests:
1. HISTORY 77.8%
2. SEARCH 22.2%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)