MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 02/23/02 through 03/01/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 77 262 339
Davis 163 4 167
Irvine 22 0 22
Los Angeles 1 75 76
Riverside 4 15 19
San Diego 26 32 58
San Francisco 41 0 41
Santa Barbara 0 17 17
Santa Cruz 3 42 45
Lawrence Berkeley 0 4 4
Lawrence Livermore 0 5 5
Los Alamos 0 0 0
Other - UC 1 16 17
Other-Network UC n/a 440 440
_______ ______ _____
338 912 1,250
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 1,133 3,210 27,042
BIO88 117 244 1,525
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 6 27 244
2-4 a.m. 12 19 78
4-6 a.m. 14 41 297
6-8 a.m. 39 112 893
8-10 a.m. 128 361 3,639
10-12 a.m. 263 610 4,361
12-2 p.m. 206 580 4,056
2-4 p.m. 239 675 6,231
4-6 p.m. 209 667 5,733
6-8 p.m. 63 173 1,402
8-10 p.m. 45 127 632
10-12 p.m. 26 62 1,001
__________ __________ __________ _________________
Total: 1,250 3,454 28,567
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 266 746 1,012
Davis 540 6 546
Irvine 103 0 103
Los Angeles 3 234 237
Riverside 7 41 48
San Diego 38 106 144
San Francisco 159 0 159
Santa Barbara 0 82 82
Santa Cruz 8 124 132
Lawrence Berkeley 0 3 3
Lawrence Livermore 0 14 14
Los Alamos 0 0 0
Other - UC 5 23 28
Other-Network UC n/a 946 946
_______ ______ _____
1,129 2,325 3,454
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,144 7,785 9,929
Davis 6,127 4 6,131
Irvine 1,140 0 1,140
Los Angeles 3 1,721 1,724
Riverside 88 726 814
San Diego 122 1,236 1,358
San Francisco 835 0 835
Santa Barbara 0 899 899
Santa Cruz 62 782 844
Lawrence Berkeley 0 19 19
Lawrence Livermore 0 107 107
Los Alamos 0 0 0
Other - UC 32 120 152
Other-Network UC n/a 4,615 4,615
_______ ______ _____
10,553 18,014 28,567
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.9
Standard deviation in seconds 3.8
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 BIOSIS Databases Detailed Statistics
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Median session length (minutes:seconds) 8:17
Average session length (minutes:seconds) 12:37
Longest session recorded (minutes:seconds) 278:41
Average number of searches completed per session 2.7
Retrievals per search - median 9.0
Retrievals per search - average 535.1
Retrievals per search - standard deviation 4491.7
Percent of searches completed with 0 results 24.1%
Percent of searches entered that are long 1.7%
Percent of long searches completed
(includes partial results) 76.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,012 31.6%
DISPLAY (excluding automatic displays) 3,208 33.7%
BROWSE 0 0.0%
HELP 137 1.4%
EXPLAIN 91 1.0%
SET/RESET 596 6.3%
SHOW 12 0.1%
ADD ON (AND, OR, AND NOT) 442 4.6%
LOGON or LOGOFF 1,421 14.9%
COMMENT 0 0.0%
SAVE 238 2.5%
USE 1 0.0%
OTHER 374 3.9%
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 1,073 32.1% 192 17.9% 22 229.2 1021.1
TITLE WORD 564 16.8% 218 38.7% 9 260.9 1230.0
EXACT TITLE 19 0.6% 13 68.4% 1 1.2 0.4
KEYWORD 1,241 37.1% 241 19.4% 29 926.9 6679.3
JOURNAL 115 3.4% 44 38.3% 36 3786.7 9761.6
EXACT JOURNAL 73 2.2% 35 47.9% 515 3867.6 8819.7
SOURCE 1 0.0% 1 100% 0 0.0 0.0
CONFERENCE 0 0.0% 0 0.0% 0 0.0 0.0
BIOSYS NAMES 0 0.0% 0 0.0% 0 0.0 0.0
BIOSYS CODES 0 0.0% 0 0.0% 0 0.0 0.0
SUPERTAXA 0 0.0% 0 0.0% 0 0.0 0.0
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 3 0.1% 0 0.0% 10 12.7 9.3
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 12 0.4% 3 25.0% 10 265.0 383.9
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
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. 24 0.7% 4 16.7% 19 1158.1 3776.3
ACCESSION NO. 1 0.0% 0 0.0% 1 1.0 0.0
ISSN 2 0.1% 2 100% 0 0.0 0.0
ISBN 1 0.0% 1 100% 0 0.0 0.0
PERIODICAL 103 3.1% 14 13.6% 4 153.4 1109.3
EXACT PE 28 0.8% 1 3.6% 2 5.8 8.7
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 87 2.6% 23 26.4% 16 2535.7 13453.5
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 340 11.4% 98 28.8% 7 110.8 539.2
Single 2,654 88.6% 593 22.3% 28 864.9 5771.0
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:
CONCEPT CODES 0 0.0% 0 0.0% 0.0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 2.9%
SHORT 85.7%
LONG 2.0%
TAGS 0.6%
FIELDS 2.2%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 5.2%
COMMENTS 0.0%
Other 1.4%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.3%
Ten most frequent errors:
1. NS command - no next screen 30.3%
2. First word of command is invalid 28.9%
3. FIND command with invalid index name 12.5%
4. DISPLAY command contains invalid word 3.7%
5. DISPLAY command - no FIND results 3.5%
6. PS command - no previous screen 3.0%
7. DATE search with unrecognized word 3.0%
8. Search term missing from search command 1.8%
9. NS of SHOW/EXP command-no next screen 1.6%
10. Valid command at an inappropriate time 1.5%
11. All others 10.2%
Ten most frequent EXPLAIN requests:
1. GUIDE 23.1%
2. LOCATE (BIO DB) 18.7%
3. COMMANDS 15.4%
4. FIND 15.4%
5. INDEXES 6.6%
6. Unrecognized term 4.4%
7. BIOSIS DATABASE 3.3%
8. AUTHOR 1.1%
9. BIOSIS NEWS 1.1%
10. DISPLAY 1.1%
11. All others 9.9%
Ten most frequent HELP situations:
1. Help requested from SET DB command 29.8%
2. First word of command is invalid 17.1%
3. FIND command with invalid index name 14.9%
4. DISPLAY command-first of >1 screen 9.2%
5. FIND command with zero results 3.1%
6. NS command - no next screen 2.6%
7. DISPLAY command - middle of >1 screen 2.6%
8. DISPLAY command - last of >1 screen 2.6%
9. 1281 2.6%
10. DISPLAY command-complete in one screen 2.2%
11. All others 13.2%
Ten most frequent SHOW requests:
1. HISTORY 75.0%
2. SETTINGS 8.3%
3. BIOSIS NEWS 8.3%
4. SYSTEM NEWS 8.3%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)