MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 05/25/02 through 05/31/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 11 110 121
Davis 60 1 61
Irvine 10 0 10
Los Angeles 0 36 36
Riverside 1 22 23
San Diego 7 40 47
San Francisco 23 0 23
Santa Barbara 1 8 9
Santa Cruz 2 27 29
Lawrence Berkeley 0 11 11
Lawrence Livermore 0 9 9
Los Alamos 0 0 0
Other - UC 0 9 9
Other-Network UC n/a 110 110
_______ ______ _____
115 383 498
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 453 1,380 13,905
BIO88 45 118 537
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 2 3 7
2-4 a.m. 7 30 100
4-6 a.m. 0 0 0
6-8 a.m. 8 22 174
8-10 a.m. 62 226 1,481
10-12 a.m. 96 295 2,821
12-2 p.m. 87 263 2,996
2-4 p.m. 122 316 3,332
4-6 p.m. 63 189 2,148
6-8 p.m. 25 74 644
8-10 p.m. 18 51 362
10-12 p.m. 8 29 377
__________ __________ __________ _________________
Total: 498 1,498 14,442
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 44 295 339
Davis 233 3 236
Irvine 14 0 14
Los Angeles 0 100 100
Riverside 1 44 45
San Diego 25 156 181
San Francisco 100 0 100
Santa Barbara 1 21 22
Santa Cruz 2 55 57
Lawrence Berkeley 0 36 36
Lawrence Livermore 0 24 24
Los Alamos 0 0 0
Other - UC 0 23 23
Other-Network UC n/a 321 321
_______ ______ _____
420 1,078 1,498
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 559 3,462 4,021
Davis 2,224 33 2,257
Irvine 130 0 130
Los Angeles 0 1,103 1,103
Riverside 0 201 201
San Diego 751 977 1,728
San Francisco 782 0 782
Santa Barbara 0 227 227
Santa Cruz 17 985 1,002
Lawrence Berkeley 0 539 539
Lawrence Livermore 0 212 212
Los Alamos 0 0 0
Other - UC 0 231 231
Other-Network UC n/a 2,009 2,009
_______ ______ _____
4,463 9,979 14,442
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.1
Standard deviation in seconds 3.7
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 BIOSIS Databases Detailed Statistics
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Median session length (minutes:seconds) 10:59
Average session length (minutes:seconds) 15:20
Longest session recorded (minutes:seconds) 301:19
Average number of searches completed per session 3.0
Retrievals per search - median 11.0
Retrievals per search - average 1198.2
Retrievals per search - standard deviation 9575.7
Percent of searches completed with 0 results 20.8%
Percent of searches entered that are long 3.3%
Percent of long searches completed
(includes partial results) 69.4%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,253 28.9%
DISPLAY (excluding automatic displays) 1,620 37.4%
BROWSE 0 0.0%
HELP 24 0.6%
EXPLAIN 31 0.7%
SET/RESET 208 4.8%
SHOW 5 0.1%
ADD ON (AND, OR, AND NOT) 245 5.7%
LOGON or LOGOFF 641 14.8%
COMMENT 0 0.0%
SAVE 165 3.8%
USE 0 0.0%
OTHER 142 3.3%
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 481 34.1% 104 21.6% 22 115.7 493.0
TITLE WORD 200 14.2% 81 40.5% 16 1643.3 6446.8
EXACT TITLE 6 0.4% 2 33.3% 1 20.5 39.0
KEYWORD 533 37.7% 84 15.8% 48 2824.8 16396.7
JOURNAL 31 2.2% 12 38.7% 592 7178.6 15612.9
EXACT JOURNAL 18 1.3% 6 33.3% 3,502 7780.8 13791.6
SOURCE 0 0.0% 0 0.0% 0 0.0 0.0
CONFERENCE 1 0.1% 0 0.0% 1,041 1041.0 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 0 0.0% 0 0.0% 0 0.0 0.0
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 7 0.5% 2 28.6% 8 8.6 7.3
LANGUAGE 1 0.1% 0 0.0% 58 58.0 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. 1 0.1% 0 0.0% 14 14.0 0.0
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 0 0.0% 0 0.0% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 71 5.0% 11 15.5% 4 88.3 353.2
EXACT PE 22 1.6% 1 4.5% 4 25.5 57.2
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 40 2.8% 12 30.0% 10 115.8 294.9
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 167 13.5% 62 37.1% 5 29.0 99.1
Single 1,069 86.5% 187 17.5% 37 1974.5 12337.8
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 1.9%
SHORT 86.2%
LONG 2.3%
TAGS 0.3%
FIELDS 1.0%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 5.5%
COMMENTS 0.0%
Other 2.6%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.1%
Ten most frequent errors:
1. NS command - no next screen 34.5%
2. First word of command is invalid 18.9%
3. FIND command with invalid index name 8.5%
4. DATE search with unrecognized word 6.7%
5. DISPLAY command - no FIND results 6.4%
6. DISPLAY command contains invalid word 3.2%
7. PS command - no previous screen 3.0%
8. Valid command at an inappropriate time 2.8%
9. Search term missing from search command 2.8%
10. Command contains escape or arrow key 2.1%
11. All others 11.3%
Ten most frequent EXPLAIN requests:
1. GUIDE 22.6%
2. LOCATE (BIO DB) 22.6%
3. FIND 12.9%
4. INDEXES 9.7%
5. COMMANDS 3.2%
6. BOOLEAN OPERATORS 3.2%
7. BIOSIS DATABASE 3.2%
8. B321 3.2%
9. B334 3.2%
10. DATE 3.2%
11. All others 12.9%
Ten most frequent HELP situations:
1. Help requested from SET DB command 23.6%
2. FIND command with zero results 12.7%
3. DISPLAY command-complete in one screen 9.1%
4. First word of command is invalid 7.3%
5. DISPLAY command-first of >1 screen 7.3%
6. PS command - no previous screen 5.5%
7. FIND command with invalid index name 5.5%
8. F/BR with index invalid in current DB 5.5%
9. 3 HELP commands issued from same code 3.6%
10. DISPLAY command - middle of >1 screen 3.6%
11. All others 16.4%
Ten most frequent SHOW requests:
1. UPDATE 60.0%
2. HISTORY 40.0%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)