MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 06/16/01 through 06/22/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 20 116 136
Davis 106 0 106
Irvine 43 0 43
Los Angeles 0 85 85
Riverside 3 40 43
San Diego 5 91 96
San Francisco 23 0 23
Santa Barbara 3 26 29
Santa Cruz 18 24 42
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 46 46
Other-Network UC n/a 170 170
_______ ______ _____
221 598 819
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 22 132 896
2-4 a.m. 27 250 1,144
4-6 a.m. 18 262 634
6-8 a.m. 14 26 219
8-10 a.m. 87 280 2,273
10-12 a.m. 165 538 4,174
12-2 p.m. 118 383 3,351
2-4 p.m. 166 556 7,467
4-6 p.m. 119 544 4,259
6-8 p.m. 46 201 3,321
8-10 p.m. 20 72 989
10-12 p.m. 17 70 1,156
__________ __________ __________ _________________
Total: 819 3,314 29,883
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 106 433 539
Davis 743 0 743
Irvine 156 0 156
Los Angeles 0 266 266
Riverside 14 217 231
San Diego 22 254 276
San Francisco 134 0 134
Santa Barbara 10 102 112
Santa Cruz 30 111 141
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 232 232
Other-Network UC n/a 484 484
_______ ______ _____
1,215 2,099 3,314
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 579 4,469 5,048
Davis 4,336 0 4,336
Irvine 1,194 0 1,194
Los Angeles 0 2,449 2,449
Riverside 41 1,679 1,720
San Diego 133 1,585 1,718
San Francisco 2,051 0 2,051
Santa Barbara 31 2,573 2,604
Santa Cruz 744 908 1,652
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 2,253 2,253
Other-Network UC n/a 4,858 4,858
_______ ______ _____
9,109 20,774 29,883
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 0.9
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) 6:03
Average session length (minutes:seconds) 14:12
Longest session recorded (minutes:seconds) 1209
Average number of searches completed per session 4.0
Retrievals per search - median 5.0
Retrievals per search - average 580.8
Retrievals per search - standard deviation 5342.0
Percent of searches completed with 0 results 25.6%
Percent of searches entered that are long 3.8%
Percent of long searches completed
(includes partial results) 73.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,997 31.2%
DISPLAY (excluding automatic displays) 3,811 39.6%
BROWSE 2 0.0%
SELECT 0 0.0%
HELP 50 0.5%
EXPLAIN 87 0.9%
SET/RESET 247 2.6%
SHOW 14 0.1%
ADD ON (AND, OR, AND NOT) 317 3.3%
LOGON or LOGOFF 1,244 12.9%
COMMENT 0 0.0%
SAVE 532 5.5%
USE 3 0.0%
OTHER 311 3.2%
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 1,485 36.6% 271 18.2% 13 65.4 346.5
TITLE WORD 312 7.7% 82 26.3% 12 452.9 4723.9
EXACT TITLE 36 0.9% 12 33.3% 1 4.0 9.7
JOURNAL 51 1.3% 15 29.4% 126 1606.9 3053.0
EXACT JOURNAL 33 0.8% 6 18.2% 678 1345.0 1762.2
SUBJECT 179 4.4% 79 44.1% 215 6123.8 16208.8
EXACT SUBJECT 424 10.4% 283 66.7% 2 15.0 87.9
KEYWORD 609 15.0% 89 14.6% 41 2003.1 10917.2
FORM/PUB TYPE 17 0.4% 2 11.8% 35 606.2 1099.5
DATE 613 15.1% 305 49.8% 3 14.9 31.5
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 0.0% 2 100% 0 0.0 0.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 1 0.0% 0 0.0% 30 30.0 0.0
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 13 0.3% 0 0.0% 1 1.0 0.0
PERIODICAL 18 0.4% 1 5.6% 3 36.8 74.9
EXACT PE 3 0.1% 0 0.0% 2 2.0 1.0
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 265 6.5% 137 51.7% 2 14.5 45.5
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 813 27.4% 348 42.8% 4 191.0 3313.4
Single 2,158 72.6% 437 20.3% 26 1029.2 7134.1
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 2 100% 1 50.0% 6 6.0 0.0
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.7%
SHORT 88.5%
LONG 0.7%
TAGS 1.3%
FIELDS 3.9%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 0.7%
COMMENTS 0.0%
Other 2.2%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.1%
Ten most frequent errors:
1. DISPLAY command - no FIND results 27.8%
2. NS command - no next screen 25.9%
3. First word of command is invalid 22.8%
4. FIND command with invalid index name 4.7%
5. PS command - no previous screen 2.7%
6. DISPLAY command contains invalid word 2.6%
7. Search term missing from search command 1.9%
8. Add-on search, no index name after verb 1.6%
9. NS of SHOW/EXP command-no next screen 1.2%
10. Valid command at an inappropriate time 0.9%
11. All others 7.9%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 47.1%
2. GUIDE 13.8%
3. FIND (PSY DB) 8.0%
4. MAIL 6.9%
5. INDEXES (PSY DB) 4.6%
6. COMMANDS (ABI/PSY DBS) 3.4%
7. SEARCH (PSY DB) 2.3%
8. DATE (PSY DB) 2.3%
9. COMMENTS 2.3%
10. ADDON SEARCH 2.3%
11. All others 6.9%
Ten most frequent HELP situations:
1. DISPLAY command-first of >1 screen 21.2%
2. First word of command is invalid 13.1%
3. Help requested from SET DB command 12.4%
4. FIND command with zero results 11.7%
5. DISPLAY command-complete in one screen 7.3%
6. FIND command retrieves >1 book 3.6%
7. DISPLAY command - last of >1 screen 3.6%
8. MAIL command entered w/o email address 3.6%
9. FIND command retrieves 1 book 2.9%
10. DISPLAY command - middle of >1 screen 2.9%
11. All others 17.5%
Ten most frequent SHOW requests:
1. HISTORY 66.7%
2. SEARCH 16.7%
3. MAIL STATUS 16.7%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)