MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 11/18/00 through 11/24/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 116 244 360
Davis 113 11 124
Irvine 102 0 102
Los Angeles 42 106 148
Riverside 29 24 53
San Diego 11 68 79
San Francisco 42 0 42
Santa Barbara 5 45 50
Santa Cruz 21 29 50
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 6 45 51
Other-Network UC n/a 82 82
_______ ______ _____
487 654 1,141
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 12 36 200
2-4 a.m. 4 7 181
4-6 a.m. 6 42 339
6-8 a.m. 20 103 609
8-10 a.m. 99 402 3,232
10-12 a.m. 196 664 7,559
12-2 p.m. 192 741 11,277
2-4 p.m. 245 961 11,463
4-6 p.m. 209 788 9,481
6-8 p.m. 57 349 4,390
8-10 p.m. 68 475 3,515
10-12 p.m. 33 200 3,050
__________ __________ __________ _________________
Total: 1,141 4,768 55,296
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 478 1,218 1,696
Davis 470 49 519
Irvine 484 0 484
Los Angeles 162 389 551
Riverside 133 80 213
San Diego 34 265 299
San Francisco 119 0 119
Santa Barbara 30 134 164
Santa Cruz 169 95 264
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 19 196 215
Other-Network UC n/a 244 244
_______ ______ _____
2,098 2,670 4,768
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 6,185 16,304 22,489
Davis 4,911 189 5,100
Irvine 4,969 0 4,969
Los Angeles 3,202 3,747 6,949
Riverside 1,301 962 2,263
San Diego 254 1,913 2,167
San Francisco 2,821 0 2,821
Santa Barbara 109 2,032 2,141
Santa Cruz 1,459 952 2,411
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 180 2,263 2,443
Other-Network UC n/a 1,543 1,543
_______ ______ _____
25,391 29,905 55,296
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.5
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 0.2
2.0 PSYCINFO Database Detailed Statistics
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Median session length (minutes:seconds) 7:24
Average session length (minutes:seconds) 13:50
Longest session recorded (minutes:seconds) 441:50
Average number of searches completed per session 4.1
Retrievals per search - median 9.0
Retrievals per search - average 1044.9
Retrievals per search - standard deviation 7757.9
Percent of searches completed with 0 results 22.8%
Percent of searches entered that are long 2.6%
Percent of long searches completed
(includes partial results) 60.2%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 4,281 27.4%
DISPLAY (excluding automatic displays) 6,950 44.4%
BROWSE 34 0.2%
SELECT 2 0.0%
HELP 318 2.0%
EXPLAIN 317 2.0%
SET/RESET 275 1.8%
SHOW 87 0.6%
ADD ON (AND, OR, AND NOT) 486 3.1%
LOGON or LOGOFF 1,806 11.5%
COMMENT 0 0.0%
SAVE 625 4.0%
USE 0 0.0%
OTHER 495 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 1,641 35.7% 338 20.6% 15 63.0 174.4
TITLE WORD 753 16.4% 212 28.2% 6 85.8 556.0
EXACT TITLE 54 1.2% 21 38.9% 11 75.1 228.4
JOURNAL 137 3.0% 53 38.7% 960 7146.7 24036.1
EXACT JOURNAL 39 0.8% 7 17.9% 599 2653.8 4692.0
SUBJECT 488 10.6% 253 51.8% 732 6321.9 11905.9
EXACT SUBJECT 36 0.8% 11 30.6% 81 4716.4 10793.5
KEYWORD 1,121 24.4% 131 11.7% 85 2256.9 13124.0
FORM/PUB TYPE 12 0.3% 3 25.0% 11 64.0 111.5
DATE 144 3.1% 16 11.1% 4 39.5 137.0
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. 6 0.1% 4 66.7% 660 660.0 478.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 10 0.2% 0 0.0% 55 222.7 325.0
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 1 0.0% 1 100% 0 0.0 0.0
PERIODICAL 107 2.3% 19 17.8% 3 1371.8 12151.1
EXACT PE 10 0.2% 0 0.0% 1 2.6 2.2
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 32 0.7% 9 28.1% 146 1317.5 4863.7
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 346 8.2% 79 22.8% 6 142.1 1441.4
Single 3,887 91.8% 918 23.6% 38 1595.8 9705.4
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 31 91.2% 9 29.0% 1 1.4 0.7
EXACT SUBJECT 3 8.8% 0 0.0% 2 2.7 2.1
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.2%
SHORT 90.8%
LONG 0.6%
TAGS 0.1%
FIELDS 1.4%
BROWSE REVIEW 0.3%
BROWSE LONG 0.2%
PERIODICALS 2.2%
COMMENTS 0.0%
Other 3.1%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.7%
Ten most frequent errors:
1. First word of command is invalid 31.3%
2. NS command - no next screen 28.7%
3. FIND command with invalid index name 10.4%
4. PS command - no previous screen 6.6%
5. DISPLAY command contains invalid word 4.0%
6. Search term missing from search command 2.6%
7. Valid command at an inappropriate time 2.4%
8. NS of SHOW/EXP command-no next screen 1.7%
9. DISPLAY command-record numbers too large 1.2%
10. Add-on search, no index name after verb 1.1%
11. All others 10.2%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 36.0%
2. GUIDE 19.6%
3. ADDON SEARCH 6.3%
4. FIND (PSY DB) 5.0%
5. COMMANDS (ABI/PSY DBS) 3.8%
6. DISPLAY (INS/PSY DBS) 3.5%
7. MAIL 3.2%
8. INDEXES (PSY DB) 3.2%
9. Unrecognized term 2.8%
10. LOCATE (PE DB) 2.2%
11. All others 14.5%
Ten most frequent HELP situations:
1. Help requested from SET DB command 18.3%
2. First word of command is invalid 17.3%
3. FIND command with invalid index name 8.8%
4. DISPLAY command-first of >1 screen 7.4%
5. DISPLAY command-complete in one screen 6.9%
6. FIND command retrieves >1 book 6.5%
7. DISPLAY command - middle of >1 screen 5.8%
8. FIND command with zero results 4.6%
9. DISPLAY command - last of >1 screen 3.3%
10. PS command - no previous screen 3.0%
11. All others 18.1%
Ten most frequent SHOW requests:
1. SEARCH 43.6%
2. HISTORY 41.0%
3. PSYCINFO NEWS 5.1%
4. MAIL STATUS 5.1%
5. SETTINGS (INS/PSY DBS) 1.3%
6. GLOSSARY 1.3%
7. 0408 1.3%
8. MAIL SETTINGS 1.3%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)