MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 06/22/02 through 06/28/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 19 130 149
Davis 86 2 88
Irvine 16 0 16
Los Angeles 2 51 53
Riverside 3 16 19
San Diego 11 27 38
San Francisco 26 0 26
Santa Barbara 0 17 17
Santa Cruz 3 14 17
Lawrence Berkeley 0 6 6
Lawrence Livermore 0 6 6
Los Alamos 0 0 0
Other - UC 3 26 29
Other-Network UC n/a 150 150
_______ ______ _____
169 445 614
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 554 1,772 18,831
BIO88 60 134 1,089
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 7 52 399
2-4 a.m. 6 4 6
4-6 a.m. 4 18 243
6-8 a.m. 14 72 736
8-10 a.m. 74 178 1,473
10-12 a.m. 123 377 4,614
12-2 p.m. 103 285 3,067
2-4 p.m. 118 334 3,179
4-6 p.m. 109 310 3,284
6-8 p.m. 34 182 1,799
8-10 p.m. 14 73 870
10-12 p.m. 8 21 250
__________ __________ __________ _________________
Total: 614 1,906 19,920
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 46 430 476
Davis 340 4 344
Irvine 111 0 111
Los Angeles 6 185 191
Riverside 8 29 37
San Diego 27 83 110
San Francisco 94 0 94
Santa Barbara 0 82 82
Santa Cruz 13 20 33
Lawrence Berkeley 0 11 11
Lawrence Livermore 0 6 6
Los Alamos 0 0 0
Other - UC 5 87 92
Other-Network UC n/a 319 319
_______ ______ _____
650 1,256 1,906
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 566 4,230 4,796
Davis 3,698 28 3,726
Irvine 1,164 0 1,164
Los Angeles 118 1,982 2,100
Riverside 6 1,399 1,405
San Diego 114 806 920
San Francisco 389 0 389
Santa Barbara 0 1,739 1,739
Santa Cruz 41 267 308
Lawrence Berkeley 0 29 29
Lawrence Livermore 0 209 209
Los Alamos 0 0 0
Other - UC 48 691 739
Other-Network UC n/a 2,396 2,396
_______ ______ _____
6,144 13,776 19,920
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.3
Standard deviation in seconds 7.4
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) 10:26
Average session length (minutes:seconds) 15:28
Longest session recorded (minutes:seconds) 228:46
Average number of searches completed per session 3.1
Retrievals per search - median 7.0
Retrievals per search - average 689.1
Retrievals per search - standard deviation 7524.1
Percent of searches completed with 0 results 22.7%
Percent of searches entered that are long 2.3%
Percent of long searches completed
(includes partial results) 69.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,664 29.0%
DISPLAY (excluding automatic displays) 2,280 39.7%
BROWSE 0 0.0%
HELP 79 1.4%
EXPLAIN 78 1.4%
SET/RESET 254 4.4%
SHOW 18 0.3%
ADD ON (AND, OR, AND NOT) 242 4.2%
LOGON or LOGOFF 789 13.7%
COMMENT 0 0.0%
SAVE 140 2.4%
USE 2 0.0%
OTHER 199 3.5%
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 535 29.0% 128 23.9% 19 206.7 628.1
TITLE WORD 289 15.7% 103 35.6% 4 455.3 3799.0
EXACT TITLE 6 0.3% 0 0.0% 1 2.0 2.0
KEYWORD 746 40.5% 122 16.4% 31 734.7 4116.4
JOURNAL 51 2.8% 30 58.8% 573 22810.5 63112.1
EXACT JOURNAL 31 1.7% 18 58.1% 3,016 7430.5 7765.3
SOURCE 0 0.0% 0 0.0% 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 2 0.1% 0 0.0% 19 19.0 0.0
SUPERTAXA 1 0.1% 0 0.0% 14 14.0 0.0
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 1 0.1% 0 0.0% 9 9.0 0.0
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 5 0.3% 1 20.0% 5 27.0 44.7
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. 3 0.2% 1 33.3% 1 1.0 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 91 4.9% 15 16.5% 7 922.9 4901.1
EXACT PE 20 1.1% 1 5.0% 3 8.1 9.9
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 61 3.3% 11 18.0% 13 133.3 325.5
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 183 11.1% 66 36.1% 6 68.9 222.0
Single 1,467 88.9% 292 19.9% 25 1075.7 9516.0
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 3.5%
SHORT 83.9%
LONG 1.3%
TAGS 0.3%
FIELDS 2.3%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 6.1%
COMMENTS 0.0%
Other 2.5%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.8%
Ten most frequent errors:
1. NS command - no next screen 33.3%
2. First word of command is invalid 26.1%
3. FIND command with invalid index name 9.1%
4. PS command - no previous screen 4.5%
5. DISPLAY command - no FIND results 4.3%
6. DISPLAY command contains invalid word 3.6%
7. DATE search with unrecognized word 3.6%
8. Search term missing from search command 2.4%
9. DISPLAY command-record numbers too large 1.4%
10. NS of SHOW/EXP command-no next screen 1.4%
11. All others 10.1%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 21.8%
2. GUIDE 20.5%
3. Unrecognized term 7.7%
4. INDEXES 6.4%
5. COMMANDS 5.1%
6. DISPLAY 5.1%
7. BIOSIS DATABASE 3.8%
8. FIND 3.8%
9. SUPERTAXA 3.8%
10. BIOSIS NEWS 2.6%
11. All others 19.2%
Ten most frequent HELP situations:
1. Help requested from SET DB command 25.5%
2. First word of command is invalid 13.4%
3. DISPLAY command-first of >1 screen 12.1%
4. FIND command with invalid index name 7.0%
5. FIND command retrieves >1 book 6.4%
6. NS command - no next screen 4.5%
7. DISPLAY command-complete in one screen 3.8%
8. DISPLAY command - last of >1 screen 3.2%
9. PS command - no previous screen 2.5%
10. FIND command retrieves 1 book 2.5%
11. All others 19.1%
Ten most frequent SHOW requests:
1. HISTORY 44.4%
2. SEARCH 27.8%
3. SUPERTAXA HIERARCHICAL TABLE 11.1%
4. SETTINGS 11.1%
5. MAIL STATUS 5.6%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)