MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 08/04/01 through 08/10/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 17 103 120
Davis 134 2 136
Irvine 57 0 57
Los Angeles 1 86 87
Riverside 13 30 43
San Diego 5 99 104
San Francisco 45 0 45
Santa Barbara 4 30 34
Santa Cruz 2 25 27
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 22 22
Other-Network UC n/a 130 130
_______ ______ _____
278 527 805
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 15 61 735
2-4 a.m. 28 322 2,676
4-6 a.m. 16 253 1,412
6-8 a.m. 15 51 311
8-10 a.m. 88 299 2,136
10-12 a.m. 142 428 4,325
12-2 p.m. 145 513 4,639
2-4 p.m. 157 489 5,187
4-6 p.m. 108 344 3,585
6-8 p.m. 41 210 1,244
8-10 p.m. 26 96 1,066
10-12 p.m. 24 97 1,440
__________ __________ __________ _________________
Total: 805 3,163 28,756
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 91 295 386
Davis 935 3 938
Irvine 180 0 180
Los Angeles 10 383 393
Riverside 64 102 166
San Diego 27 270 297
San Francisco 123 0 123
Santa Barbara 6 77 83
Santa Cruz 2 96 98
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 105 105
Other-Network UC n/a 394 394
_______ ______ _____
1,438 1,725 3,163
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 292 2,713 3,005
Davis 5,803 22 5,825
Irvine 1,841 0 1,841
Los Angeles 94 4,007 4,101
Riverside 572 734 1,306
San Diego 66 3,179 3,245
San Francisco 1,779 0 1,779
Santa Barbara 14 1,079 1,093
Santa Cruz 6 1,175 1,181
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 833 833
Other-Network UC n/a 4,547 4,547
_______ ______ _____
10,467 18,289 28,756
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) 5:45
Average session length (minutes:seconds) 10:53
Longest session recorded (minutes:seconds) 195:42
Average number of searches completed per session 3.9
Retrievals per search - median 6.0
Retrievals per search - average 966.1
Retrievals per search - standard deviation 8986.7
Percent of searches completed with 0 results 24.6%
Percent of searches entered that are long 3.4%
Percent of long searches completed
(includes partial results) 77.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,823 31.2%
DISPLAY (excluding automatic displays) 3,628 40.1%
BROWSE 24 0.3%
SELECT 2 0.0%
HELP 62 0.7%
EXPLAIN 69 0.8%
SET/RESET 265 2.9%
SHOW 15 0.2%
ADD ON (AND, OR, AND NOT) 340 3.8%
LOGON or LOGOFF 1,217 13.5%
COMMENT 0 0.0%
SAVE 379 4.2%
USE 0 0.0%
OTHER 245 2.7%
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 1,332 33.6% 224 16.8% 13 46.0 129.9
TITLE WORD 264 6.7% 78 29.5% 13 332.8 2325.9
EXACT TITLE 12 0.3% 5 41.7% 1 5.4 9.6
JOURNAL 66 1.7% 15 22.7% 902 4000.5 8517.6
EXACT JOURNAL 84 2.1% 18 21.4% 119 975.3 1986.3
SUBJECT 193 4.9% 103 53.4% 479 8431.5 27161.4
EXACT SUBJECT 497 12.5% 249 50.1% 1 56.7 294.9
KEYWORD 478 12.1% 53 11.1% 43 3796.2 19287.2
FORM/PUB TYPE 19 0.5% 1 5.3% 36 131.2 204.9
DATE 677 17.1% 271 40.0% 3 34.3 181.6
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 0.2% 2 33.3% 133 215.5 230.5
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 2 0.1% 0 0.0% 141 140.5 157.7
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 18 0.5% 0 0.0% 1 1.0 0.0
PERIODICAL 17 0.4% 4 23.5% 18 98.5 235.0
EXACT PE 3 0.1% 1 33.3% 3 3.0 1.4
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 296 7.5% 85 28.7% 1 974.3 12672.5
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 848 30.3% 311 36.7% 4 516.9 8267.1
Single 1,951 69.7% 399 20.4% 26 1567.9 11307.5
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 10 41.7% 2 20.0% 3 4.5 4.8
EXACT SUBJECT 14 58.3% 4 28.6% 1 1.2 0.4
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.2%
SHORT 83.6%
LONG 1.3%
TAGS 3.4%
FIELDS 7.3%
BROWSE REVIEW 0.4%
BROWSE LONG 0.2%
PERIODICALS 0.5%
COMMENTS 0.0%
Other 1.1%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.9%
Ten most frequent errors:
1. NS command - no next screen 26.5%
2. DISPLAY command - no FIND results 25.7%
3. First word of command is invalid 20.4%
4. FIND command with invalid index name 8.1%
5. DISPLAY command contains invalid word 2.9%
6. PS command - no previous screen 2.9%
7. Add-on search, no index name after verb 1.9%
8. Valid command at an inappropriate time 1.7%
9. Search term missing from search command 1.4%
10. DISPLAY command-record numbers too large 0.8%
11. All others 7.7%
Ten most frequent EXPLAIN requests:
1. GUIDE 23.2%
2. LOCATE (INS/PSY DBS) 15.9%
3. DISPLAY (INS/PSY DBS) 7.2%
4. INDEXES (PSY DB) 7.2%
5. FIND LOCATION 5.8%
6. FIND (PSY DB) 5.8%
7. COMMANDS (ABI/PSY DBS) 4.3%
8. MAIL 4.3%
9. SEARCH (PSY DB) 4.3%
10. P145 2.9%
11. All others 18.8%
Ten most frequent HELP situations:
1. Help requested from SET DB command 29.8%
2. First word of command is invalid 13.7%
3. DISPLAY command-first of >1 screen 9.2%
4. FIND command with invalid index name 8.4%
5. FIND command with zero results 8.4%
6. DISPLAY command-complete in one screen 4.6%
7. DISPLAY command - middle of >1 screen 3.8%
8. DISPLAY command - last of >1 screen 3.1%
9. PS command - no previous screen 2.3%
10. NS of SHOW/EXP command-no next screen 2.3%
11. All others 14.5%
Ten most frequent SHOW requests:
1. HISTORY 80.0%
2. SEARCH 13.3%
3. SYSTEM NEWS 6.7%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)