MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 06/08/02 through 06/14/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 2 102 104
Davis 99 1 100
Irvine 11 0 11
Los Angeles 0 70 70
Riverside 1 23 24
San Diego 5 47 52
San Francisco 10 0 10
Santa Barbara 2 51 53
Santa Cruz 0 12 12
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 18 18
Other-Network UC n/a 98 98
_______ ______ _____
130 422 552
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 8 52 506
2-4 a.m. 21 228 679
4-6 a.m. 1 1 20
6-8 a.m. 9 45 445
8-10 a.m. 67 189 1,630
10-12 a.m. 127 425 3,128
12-2 p.m. 118 324 2,988
2-4 p.m. 85 345 2,066
4-6 p.m. 56 289 10,954
6-8 p.m. 26 117 1,286
8-10 p.m. 17 61 643
10-12 p.m. 17 144 811
__________ __________ __________ _________________
Total: 552 2,220 25,156
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 9 376 385
Davis 624 1 625
Irvine 28 0 28
Los Angeles 0 248 248
Riverside 7 92 99
San Diego 22 122 144
San Francisco 25 0 25
Santa Barbara 8 180 188
Santa Cruz 0 56 56
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 103 103
Other-Network UC n/a 319 319
_______ ______ _____
723 1,497 2,220
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 16 3,571 3,587
Davis 11,313 6 11,319
Irvine 331 0 331
Los Angeles 0 2,400 2,400
Riverside 8 785 793
San Diego 22 974 996
San Francisco 224 0 224
Santa Barbara 19 2,020 2,039
Santa Cruz 0 849 849
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 564 564
Other-Network UC n/a 2,054 2,054
_______ ______ _____
11,933 13,223 25,156
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.7
Standard deviation in seconds 1.7
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) 6:04
Average session length (minutes:seconds) 12:54
Longest session recorded (minutes:seconds) 304:26
Average number of searches completed per session 4.0
Retrievals per search - median 8.0
Retrievals per search - average 1177.3
Retrievals per search - standard deviation 8948.0
Percent of searches completed with 0 results 21.1%
Percent of searches entered that are long 4.1%
Percent of long searches completed
(includes partial results) 81.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,042 31.9%
DISPLAY (excluding automatic displays) 2,636 41.2%
BROWSE 0 0.0%
SELECT 0 0.0%
HELP 32 0.5%
EXPLAIN 54 0.8%
SET/RESET 117 1.8%
SHOW 15 0.2%
ADD ON (AND, OR, AND NOT) 178 2.8%
LOGON or LOGOFF 938 14.7%
COMMENT 0 0.0%
SAVE 199 3.1%
USE 1 0.0%
OTHER 184 2.9%
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 914 31.3% 152 16.6% 12 49.2 173.0
TITLE WORD 240 8.2% 66 27.5% 7 285.0 1584.6
EXACT TITLE 14 0.5% 4 28.6% 3 22.0 43.9
JOURNAL 28 1.0% 10 35.7% 611 1281.6 1845.9
EXACT JOURNAL 173 5.9% 11 6.4% 6,492 5400.7 4312.9
SUBJECT 56 1.9% 27 48.2% 321 1283.7 3362.1
EXACT SUBJECT 210 7.2% 142 67.6% 2 7.2 13.2
KEYWORD 591 20.2% 70 11.8% 119 4225.3 17936.4
FORM/PUB TYPE 13 0.4% 1 7.7% 320 1696.9 2610.1
DATE 351 12.0% 160 45.6% 4 641.0 3471.5
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. 5 0.2% 1 20.0% 350 2344.0 4202.9
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 3 0.1% 1 33.3% 46 45.5 61.5
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 15 0.5% 0 0.0% 1 1.0 0.0
PERIODICAL 26 0.9% 2 7.7% 5 16.5 24.7
EXACT PE 5 0.2% 0 0.0% 2 2.6 2.5
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 279 9.5% 59 21.1% 6,279 4493.1 3562.9
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 626 31.0% 197 31.5% 20 2342.2 3846.5
Single 1,396 69.0% 245 17.5% 22 1324.9 12090.7
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 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 1.4%
SHORT 89.5%
LONG 1.0%
TAGS 1.8%
FIELDS 3.3%
BROWSE REVIEW 0.1%
BROWSE LONG 0.0%
PERIODICALS 1.7%
COMMENTS 0.0%
Other 1.2%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.7%
Ten most frequent errors:
1. NS command - no next screen 26.5%
2. DISPLAY command - no FIND results 24.5%
3. First word of command is invalid 20.1%
4. FIND command with invalid index name 6.0%
5. PS command - no previous screen 3.4%
6. DISPLAY command contains invalid word 3.1%
7. Valid command at an inappropriate time 2.3%
8. NS of SHOW/EXP command-no next screen 2.0%
9. Search term missing from search command 1.5%
10. DISPLAY command-record numbers too large 1.3%
11. All others 9.3%
Ten most frequent EXPLAIN requests:
1. GUIDE 29.6%
2. LOCATE (INS/PSY DBS) 29.6%
3. P031 5.6%
4. COMMANDS (ABI/PSY DBS) 3.7%
5. FIND (PSY DB) 3.7%
6. ADDON SEARCH 3.7%
7. DOWNLOADING 3.7%
8. MAGS DATABASE 1.9%
9. MAGS TEXT 1.9%
10. CAPTURE DISPLAYS 1.9%
11. All others 14.8%
Ten most frequent HELP situations:
1. Help requested from SET DB command 31.4%
2. DISPLAY command-first of >1 screen 17.4%
3. First word of command is invalid 7.0%
4. FIND command retrieves >1 book 7.0%
5. DISPLAY command-complete in one screen 5.8%
6. FIND command with invalid index name 3.5%
7. DISPLAY command - middle of >1 screen 3.5%
8. DISPLAY command - last of >1 screen 3.5%
9. Multi-index search with zero results 3.5%
10. DISPLAY command - no FIND results 2.3%
11. All others 15.1%
Ten most frequent SHOW requests:
1. HISTORY 63.6%
2. PSYCINFO NEWS 18.2%
3. SEARCH 18.2%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)