MELVYL PSYCINFO DATABASE TELNET STATISTICS
Time period: 10/20/01 through 10/26/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 12 128 140
Davis 121 1 122
Irvine 43 0 43
Los Angeles 2 80 82
Riverside 6 32 38
San Diego 4 95 99
San Francisco 41 0 41
Santa Barbara 1 46 47
Santa Cruz 0 23 23
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 1 28 29
Other-Network UC n/a 156 156
_______ ______ _____
231 589 820
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 14 35 367
2-4 a.m. 25 273 790
4-6 a.m. 4 26 155
6-8 a.m. 28 142 1,059
8-10 a.m. 85 373 2,539
10-12 a.m. 139 410 3,088
12-2 p.m. 145 458 4,117
2-4 p.m. 184 807 6,819
4-6 p.m. 98 382 5,472
6-8 p.m. 39 156 1,139
8-10 p.m. 36 143 928
10-12 p.m. 23 126 709
__________ __________ __________ _________________
Total: 820 3,331 27,182
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 73 561 634
Davis 647 7 654
Irvine 145 0 145
Los Angeles 4 301 305
Riverside 22 135 157
San Diego 32 336 368
San Francisco 143 0 143
Santa Barbara 1 174 175
Santa Cruz 1 97 98
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 1 108 109
Other-Network UC n/a 543 543
_______ ______ _____
1,069 2,262 3,331
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,070 4,353 5,423
Davis 4,122 37 4,159
Irvine 800 0 800
Los Angeles 9 3,658 3,667
Riverside 37 1,356 1,393
San Diego 28 3,036 3,064
San Francisco 1,579 0 1,579
Santa Barbara 6 2,101 2,107
Santa Cruz 0 1,105 1,105
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 2 740 742
Other-Network UC n/a 3,143 3,143
_______ ______ _____
7,653 19,529 27,182
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.8
Standard deviation in seconds 2.9
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.6
2.0 PSYCINFO Database Detailed Statistics
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Median session length (minutes:seconds) 7:38
Average session length (minutes:seconds) 12:09
Longest session recorded (minutes:seconds) 121:07
Average number of searches completed per session 4.0
Retrievals per search - median 6.0
Retrievals per search - average 584.7
Retrievals per search - standard deviation 5264.3
Percent of searches completed with 0 results 26.4%
Percent of searches entered that are long 3.0%
Percent of long searches completed
(includes partial results) 69.7%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,983 32.2%
DISPLAY (excluding automatic displays) 3,718 40.2%
BROWSE 4 0.0%
SELECT 0 0.0%
HELP 112 1.2%
EXPLAIN 118 1.3%
SET/RESET 293 3.2%
SHOW 54 0.6%
ADD ON (AND, OR, AND NOT) 348 3.8%
LOGON or LOGOFF 1,135 12.3%
COMMENT 0 0.0%
SAVE 222 2.4%
USE 0 0.0%
OTHER 274 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 1,443 39.3% 269 18.6% 14 58.9 181.4
TITLE WORD 346 9.4% 135 39.0% 8 131.2 416.9
EXACT TITLE 38 1.0% 17 44.7% 3 49.4 129.2
JOURNAL 90 2.4% 25 27.8% 391 1744.0 3135.1
EXACT JOURNAL 23 0.6% 1 4.3% 467 2451.8 3343.8
SUBJECT 107 2.9% 52 48.6% 1,258 6804.1 15940.6
EXACT SUBJECT 257 7.0% 196 76.3% 3 76.6 516.7
KEYWORD 712 19.4% 146 20.5% 27 2173.4 11299.8
FORM/PUB TYPE 23 0.6% 5 21.7% 42 3720.0 13732.3
DATE 399 10.9% 226 56.6% 4 50.6 309.1
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. 4 0.1% 2 50.0% 1,242 1242.0 0.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 6 0.2% 0 0.0% 183 299.0 468.6
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 9 0.2% 0 0.0% 1 1.0 0.0
PERIODICAL 65 1.8% 6 9.2% 5 14.8 23.7
EXACT PE 7 0.2% 1 14.3% 3 3.0 2.1
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 145 3.9% 104 71.7% 3 12.3 19.5
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 557 18.9% 272 48.8% 4 274.4 3486.4
Single 2,396 81.1% 538 22.5% 24 967.9 6851.2
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 4 100% 3 75.0% 2 2.0 0.0
EXACT SUBJECT 0 0.0% 0 0.0% 0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.7%
SHORT 86.8%
LONG 2.2%
TAGS 0.4%
FIELDS 3.2%
BROWSE REVIEW 0.0%
BROWSE LONG 0.0%
PERIODICALS 2.9%
COMMENTS 0.0%
Other 1.8%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 10.0%
Ten most frequent errors:
1. First word of command is invalid 26.0%
2. NS command - no next screen 24.5%
3. DISPLAY command - no FIND results 19.1%
4. FIND command with invalid index name 7.4%
5. DISPLAY command contains invalid word 4.2%
6. PS command - no previous screen 3.5%
7. Valid command at an inappropriate time 2.0%
8. Search term missing from search command 1.6%
9. DISPLAY command-record numbers too large 1.2%
10. Add-on search, no index name after verb 1.2%
11. All others 9.4%
Ten most frequent EXPLAIN requests:
1. LOCATE (INS/PSY DBS) 35.6%
2. GUIDE 8.5%
3. FIND (PSY DB) 8.5%
4. COMMANDS (ABI/PSY DBS) 6.8%
5. ADDON SEARCH 5.1%
6. INDEXES (PSY DB) 4.2%
7. Unrecognized term 4.2%
8. DATABASES 4.2%
9. MAIL 3.4%
10. DISPLAY (INS/PSY DBS) 3.4%
11. All others 16.1%
Ten most frequent HELP situations:
1. First word of command is invalid 15.7%
2. Help requested from SET DB command 13.5%
3. DISPLAY command-first of >1 screen 10.9%
4. FIND command with invalid index name 10.0%
5. DISPLAY command - middle of >1 screen 10.0%
6. FIND command retrieves >1 book 6.1%
7. FIND command with zero results 4.8%
8. DISPLAY command - last of >1 screen 4.8%
9. PS command - no previous screen 4.3%
10. Valid command at an inappropriate time 2.2%
11. All others 17.8%
Ten most frequent SHOW requests:
1. SEARCH 50.9%
2. HISTORY 32.1%
3. GLOSSARY 7.5%
4. SETTINGS (INS/PSY DBS) 5.7%
5. Z39.50 NEWS 1.9%
6. PSYCINFO NEWS 1.9%
11. All others 0.0%
PSYmm/dd psy MELVYL PSYCINFO DATABASE TELNET STATISTICS (weekly)