MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 12/29/01 through 01/04/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 2 117 119
Davis 58 0 58
Irvine 25 0 25
Los Angeles 0 68 68
Riverside 0 26 26
San Diego 9 67 76
San Francisco 15 0 15
Santa Barbara 2 14 16
Santa Cruz 0 21 21
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 1 9 10
Other-Network UC n/a 100 100
_______ ______ _____
112 422 534
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 7 16 243
2-4 a.m. 16 231 695
4-6 a.m. 15 94 676
6-8 a.m. 21 72 481
8-10 a.m. 52 206 1,993
10-12 a.m. 118 384 4,199
12-2 p.m. 110 391 4,128
2-4 p.m. 94 321 3,025
4-6 p.m. 54 206 2,157
6-8 p.m. 24 131 1,412
8-10 p.m. 14 41 293
10-12 p.m. 9 50 467
__________ __________ __________ _________________
Total: 534 2,143 19,769
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 2 466 468
Davis 390 0 390
Irvine 97 0 97
Los Angeles 0 252 252
Riverside 0 79 79
San Diego 16 307 323
San Francisco 50 0 50
Santa Barbara 3 61 64
Santa Cruz 0 53 53
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 20 20
Other-Network UC n/a 347 347
_______ ______ _____
558 1,585 2,143
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 36 4,280 4,316
Davis 2,129 0 2,129
Irvine 1,044 0 1,044
Los Angeles 0 3,530 3,530
Riverside 0 828 828
San Diego 184 2,173 2,357
San Francisco 324 0 324
Santa Barbara 0 948 948
Santa Cruz 0 639 639
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 50 50
Other-Network UC n/a 3,604 3,604
_______ ______ _____
3,717 16,052 19,769
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 0.8
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) 5:46
Average session length (minutes:seconds) 14:31
Longest session recorded (minutes:seconds) 737:08
Average number of searches completed per session 4.0
Retrievals per search - median 8.0
Retrievals per search - average 358.1
Retrievals per search - standard deviation 4571.6
Percent of searches completed with 0 results 23.8%
Percent of searches entered that are long 2.5%
Percent of long searches completed
(includes partial results) 75.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,926 32.0%
DISPLAY (excluding automatic displays) 2,396 39.8%
BROWSE 0 0.0%
SELECT 0 0.0%
HELP 18 0.3%
EXPLAIN 13 0.2%
SET/RESET 150 2.5%
SHOW 5 0.1%
ADD ON (AND, OR, AND NOT) 217 3.6%
LOGON or LOGOFF 813 13.5%
COMMENT 0 0.0%
SAVE 306 5.1%
USE 0 0.0%
OTHER 169 2.8%
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 1,020 42.2% 176 17.3% 16 51.6 143.2
TITLE WORD 210 8.7% 52 24.8% 8 82.8 242.5
EXACT TITLE 9 0.4% 3 33.3% 1 1.0 0.0
JOURNAL 30 1.2% 9 30.0% 534 2211.8 3330.9
EXACT JOURNAL 39 1.6% 13 33.3% 187 332.4 430.6
SUBJECT 63 2.6% 25 39.7% 641 2377.0 4650.4
EXACT SUBJECT 211 8.7% 161 76.3% 2 17.7 45.8
KEYWORD 424 17.5% 65 15.3% 36 1381.8 10825.5
FORM/PUB TYPE 9 0.4% 0 0.0% 489 1093.7 1187.9
DATE 263 10.9% 174 66.2% 3 12.6 20.9
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% 2,401 1802.8 1196.5
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 4 0.2% 0 0.0% 1 1.0 0.0
PERIODICAL 10 0.4% 0 0.0% 3 8.0 17.3
EXACT PE 1 0.0% 0 0.0% 1 1.0 0.0
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 120 5.0% 81 67.5% 1 12.9 21.4
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 369 19.3% 199 53.9% 4 99.7 467.5
Single 1,544 80.7% 273 17.7% 24 531.9 5859.4
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 0 0.0% 0 0.0% 0.0 0.0 0.0
EXACT SUBJECT 0 0.0% 0 0.0% 0.0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 1.0%
SHORT 88.3%
LONG 0.8%
TAGS 1.0%
FIELDS 5.6%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 0.6%
COMMENTS 0.0%
Other 2.6%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.7%
Ten most frequent errors:
1. DISPLAY command - no FIND results 30.5%
2. NS command - no next screen 27.4%
3. First word of command is invalid 17.0%
4. 790 5.4%
5. FIND command with invalid index name 5.3%
6. 1281 3.6%
7. DISPLAY command contains invalid word 2.2%
8. DISPLAY command-record numbers too large 1.1%
9. Valid command at an inappropriate time 0.9%
10. PS command - no previous screen 0.9%
11. All others 5.7%
Ten most frequent EXPLAIN requests:
1. INDEXES (PSY DB) 23.1%
2. GUIDE 15.4%
3. LOCATE (INS/PSY DBS) 15.4%
4. FIND (PSY DB) 15.4%
5. COMMANDS (ABI/PSY DBS) 7.7%
6. DATE (PSY DB) 7.7%
7. 1530 7.7%
8. 3190 7.7%
11. All others 0.0%
Ten most frequent HELP situations:
1. 1281 35.5%
2. Help requested from SET DB command 22.6%
3. First word of command is invalid 16.1%
4. Add-on without index name after verb 6.5%
5. DISPLAY command-complete in one screen 6.5%
6. DISPLAY command-first of >1 screen 6.5%
7. NS command - no next screen 3.2%
8. FIND command with invalid index name 3.2%
11. All others 0.0%
Ten most frequent SHOW requests:
1. HISTORY 80.0%
2. PSYCINFO NEWS 20.0%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)