MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 03/09/02 through 03/15/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 15 139 154
Davis 145 0 145
Irvine 58 0 58
Los Angeles 1 76 77
Riverside 0 38 38
San Diego 12 86 98
San Francisco 32 0 32
Santa Barbara 1 32 33
Santa Cruz 3 17 20
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 1 40 41
Other-Network UC n/a 100 100
_______ ______ _____
268 528 796
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 18 60 362
2-4 a.m. 31 288 732
4-6 a.m. 5 12 83
6-8 a.m. 18 90 785
8-10 a.m. 76 248 3,185
10-12 a.m. 156 659 4,662
12-2 p.m. 126 305 3,605
2-4 p.m. 157 457 4,091
4-6 p.m. 117 369 3,299
6-8 p.m. 41 169 1,193
8-10 p.m. 38 127 882
10-12 p.m. 13 76 511
__________ __________ __________ _________________
Total: 796 2,860 23,390
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 29 456 485
Davis 629 0 629
Irvine 158 0 158
Los Angeles 6 319 325
Riverside 0 103 103
San Diego 19 260 279
San Francisco 207 0 207
Santa Barbara 6 128 134
Santa Cruz 12 46 58
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 1 162 163
Other-Network UC n/a 319 319
_______ ______ _____
1,067 1,793 2,860
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 186 4,369 4,555
Davis 4,026 0 4,026
Irvine 2,625 0 2,625
Los Angeles 48 3,203 3,251
Riverside 0 846 846
San Diego 32 1,942 1,974
San Francisco 478 0 478
Santa Barbara 60 1,653 1,713
Santa Cruz 19 798 817
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 4 1,157 1,161
Other-Network UC n/a 1,944 1,944
_______ ______ _____
7,478 15,912 23,390
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 0.7
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) 6:33
Average session length (minutes:seconds) 11:49
Longest session recorded (minutes:seconds) 172:39
Average number of searches completed per session 3.6
Retrievals per search - median 5.0
Retrievals per search - average 663.4
Retrievals per search - standard deviation 6030.4
Percent of searches completed with 0 results 26.7%
Percent of searches entered that are long 3.9%
Percent of long searches completed
(includes partial results) 73.9%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,529 30.3%
DISPLAY (excluding automatic displays) 3,080 36.9%
BROWSE 3 0.0%
SELECT 0 0.0%
HELP 79 0.9%
EXPLAIN 84 1.0%
SET/RESET 227 2.7%
SHOW 22 0.3%
ADD ON (AND, OR, AND NOT) 331 4.0%
LOGON or LOGOFF 1,211 14.5%
COMMENT 0 0.0%
SAVE 518 6.2%
USE 1 0.0%
OTHER 258 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 1,073 33.6% 203 18.9% 14 55.0 207.9
TITLE WORD 311 9.7% 81 26.0% 9 209.7 1202.6
EXACT TITLE 35 1.1% 11 31.4% 1 10.3 21.4
JOURNAL 187 5.9% 75 40.1% 935 2655.6 3530.5
EXACT JOURNAL 18 0.6% 3 16.7% 1,471 1342.0 977.1
SUBJECT 150 4.7% 73 48.7% 1,141 4577.5 8675.8
EXACT SUBJECT 246 7.7% 209 85.0% 3 9.1 12.4
KEYWORD 500 15.7% 81 16.2% 46 2578.2 14778.9
FORM/PUB TYPE 12 0.4% 4 33.3% 25 650.9 1745.5
DATE 385 12.1% 225 58.4% 5 62.9 621.1
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. 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 2 0.1% 0 0.0% 59 58.5 41.7
ISSN 1 0.0% 1 100% 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 88 2.8% 16 18.2% 6 55.4 262.4
EXACT PE 37 1.2% 3 8.1% 2 9.0 25.7
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 140 4.4% 109 77.9% 3 9.3 12.8
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 538 21.5% 271 50.4% 5 58.9 348.9
Single 1,963 78.5% 436 22.2% 27 1201.7 8168.9
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 3 100% 3 100% 0.0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.0%
SHORT 89.1%
LONG 0.7%
TAGS 0.5%
FIELDS 2.0%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.3%
COMMENTS 0.0%
Other 1.4%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.6%
Ten most frequent errors:
1. NS command - no next screen 25.4%
2. First word of command is invalid 23.8%
3. DISPLAY command - no FIND results 21.5%
4. FIND command with invalid index name 7.7%
5. PS command - no previous screen 6.1%
6. Search term missing from search command 2.3%
7. Valid command at an inappropriate time 2.0%
8. DISPLAY command contains invalid word 2.0%
9. DISPLAY command-record numbers too large 1.2%
10. NS of SHOW/EXP command-no next screen 0.7%
11. All others 7.1%
Ten most frequent EXPLAIN requests:
1. GUIDE 27.4%
2. LOCATE (INS/PSY DBS) 25.0%
3. COMMANDS (ABI/PSY DBS) 6.0%
4. INDEXES (PSY DB) 6.0%
5. Unrecognized term 6.0%
6. DATABASES 4.8%
7. DISPLAY (INS/PSY DBS) 3.6%
8. 1219 3.6%
9. MAGS TEXT 2.4%
10. ABI TEXT 2.4%
11. All others 13.1%
Ten most frequent HELP situations:
1. Help requested from SET DB command 21.5%
2. First word of command is invalid 20.9%
3. DISPLAY command-first of >1 screen 11.7%
4. FIND command with invalid index name 9.8%
5. FIND command retrieves >1 book 5.5%
6. DISPLAY command - middle of >1 screen 4.9%
7. FIND command with zero results 4.3%
8. DISPLAY command - last of >1 screen 3.1%
9. MAIL command entered w/o email address 2.5%
10. F/BR command with invalid search term 1.8%
11. All others 14.1%
Ten most frequent SHOW requests:
1. HISTORY 59.1%
2. SEARCH 13.6%
3. MAIL STATUS 13.6%
4. SETTINGS (INS/PSY DBS) 4.5%
5. 2292 4.5%
6. DATABASES 4.5%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)