MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 03/23/02 through 03/29/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 9 116 125
Davis 79 3 82
Irvine 35 0 35
Los Angeles 1 67 68
Riverside 0 10 10
San Diego 6 56 62
San Francisco 19 0 19
Santa Barbara 0 29 29
Santa Cruz 1 10 11
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 15 15
Other-Network UC n/a 100 100
_______ ______ _____
150 406 556
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 10 47 276
2-4 a.m. 15 253 427
4-6 a.m. 6 20 324
6-8 a.m. 13 34 322
8-10 a.m. 62 212 1,893
10-12 a.m. 106 357 3,753
12-2 p.m. 113 427 4,011
2-4 p.m. 102 415 3,849
4-6 p.m. 68 224 2,219
6-8 p.m. 26 99 980
8-10 p.m. 19 81 1,148
10-12 p.m. 16 40 368
__________ __________ __________ _________________
Total: 556 2,209 19,570
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 24 405 429
Davis 528 8 536
Irvine 145 0 145
Los Angeles 14 217 231
Riverside 0 13 13
San Diego 2 158 160
San Francisco 93 0 93
Santa Barbara 0 137 137
Santa Cruz 2 73 75
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 52 52
Other-Network UC n/a 338 338
_______ ______ _____
808 1,401 2,209
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 98 4,805 4,903
Davis 2,516 117 2,633
Irvine 1,835 0 1,835
Los Angeles 135 2,643 2,778
Riverside 0 145 145
San Diego 3 1,748 1,751
San Francisco 623 0 623
Santa Barbara 0 1,320 1,320
Santa Cruz 13 893 906
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 462 462
Other-Network UC n/a 2,214 2,214
_______ ______ _____
5,223 14,347 19,570
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 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) 8:43
Average session length (minutes:seconds) 16:39
Longest session recorded (minutes:seconds) 867:38
Average number of searches completed per session 3.9
Retrievals per search - median 9.0
Retrievals per search - average 558.5
Retrievals per search - standard deviation 4675.5
Percent of searches completed with 0 results 23.6%
Percent of searches entered that are long 2.9%
Percent of long searches completed
(includes partial results) 72.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,022 31.9%
DISPLAY (excluding automatic displays) 2,686 42.4%
BROWSE 14 0.2%
SELECT 0 0.0%
HELP 39 0.6%
EXPLAIN 28 0.4%
SET/RESET 188 3.0%
SHOW 27 0.4%
ADD ON (AND, OR, AND NOT) 187 3.0%
LOGON or LOGOFF 812 12.8%
COMMENT 0 0.0%
SAVE 157 2.5%
USE 0 0.0%
OTHER 192 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 869 33.7% 122 14.0% 22 54.9 114.0
TITLE WORD 194 7.5% 50 25.8% 13 180.9 718.6
EXACT TITLE 22 0.9% 5 22.7% 7 15.2 17.1
JOURNAL 26 1.0% 8 30.8% 47 878.9 1487.3
EXACT JOURNAL 39 1.5% 12 30.8% 144 594.3 1252.9
SUBJECT 75 2.9% 34 45.3% 1,855 9202.9 22992.4
EXACT SUBJECT 247 9.6% 196 79.4% 3 7.2 11.3
KEYWORD 518 20.1% 66 12.7% 61 1702.8 7087.9
FORM/PUB TYPE 4 0.2% 0 0.0% 44 36.8 21.1
DATE 320 12.4% 208 65.0% 3 13.4 31.1
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 4 0.2% 0 0.0% 72 104.8 83.7
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 0.3% 0 0.0% 1 1.0 0.0
PERIODICAL 60 2.3% 6 10.0% 5 15.3 28.3
EXACT PE 45 1.7% 14 31.1% 2 3.8 4.8
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 149 5.8% 102 68.5% 3 142.5 563.0
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 419 20.9% 227 54.2% 5 266.1 1266.7
Single 1,584 79.1% 264 16.7% 29 873.7 5978.7
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 14 100% 5 35.7% 1 1.2 0.7
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.6%
SHORT 85.3%
LONG 0.4%
TAGS 0.8%
FIELDS 3.5%
BROWSE REVIEW 0.3%
BROWSE LONG 0.2%
PERIODICALS 4.6%
COMMENTS 0.0%
Other 1.4%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.4%
Ten most frequent errors:
1. DISPLAY command - no FIND results 30.9%
2. NS command - no next screen 28.4%
3. First word of command is invalid 19.3%
4. FIND command with invalid index name 4.4%
5. DISPLAY command contains invalid word 2.4%
6. PS command - no previous screen 2.3%
7. Valid command at an inappropriate time 1.5%
8. Search term missing from search command 1.4%
9. DISPLAY command-record numbers too large 1.2%
10. 1281 0.9%
11. All others 7.3%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 21.4%
2. COMMANDS (ABI/PSY DBS) 14.3%
3. GUIDE 7.1%
4. INDEXES (PSY DB) 7.1%
5. DATABASES 7.1%
6. ADDON SEARCH 7.1%
7. FIND LOCATION 3.6%
8. I154 3.6%
9. DISPLAY (INS/PSY DBS) 3.6%
10. FIND (PSY DB) 3.6%
11. All others 21.4%
Ten most frequent HELP situations:
1. First word of command is invalid 22.4%
2. FIND command retrieves >1 book 11.9%
3. DISPLAY command-first of >1 screen 9.0%
4. Help requested from SET DB command 9.0%
5. 1281 7.5%
6. FIND command with invalid index name 6.0%
7. NS command - no next screen 4.5%
8. 1229 4.5%
9. 3 HELP commands issued from same code 3.0%
10. DISPLAY command-complete in one screen 3.0%
11. All others 19.4%
Ten most frequent SHOW requests:
1. SEARCH 55.6%
2. HISTORY 33.3%
3. PSYCINFO NEWS 7.4%
4. FORM NAMES (PSY DB) 3.7%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)