MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 12/15/01 through 12/21/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 25 214 239
Davis 160 2 162
Irvine 14 0 14
Los Angeles 0 39 39
Riverside 4 20 24
San Diego 16 19 35
San Francisco 13 0 13
Santa Barbara 3 8 11
Santa Cruz 0 16 16
Lawrence Berkeley 0 1 1
Lawrence Livermore 0 3 3
Los Alamos 0 0 0
Other - UC 0 15 15
Other-Network UC n/a 345 345
_______ ______ _____
235 682 917
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 816 2,150 16,674
BIO88 101 172 886
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 4 5 19
2-4 a.m. 8 27 155
4-6 a.m. 7 23 752
6-8 a.m. 38 53 186
8-10 a.m. 107 272 1,656
10-12 a.m. 204 435 3,018
12-2 p.m. 174 411 3,074
2-4 p.m. 196 575 3,784
4-6 p.m. 121 279 2,362
6-8 p.m. 25 101 1,205
8-10 p.m. 14 94 653
10-12 p.m. 19 47 696
__________ __________ __________ _________________
Total: 917 2,322 17,560
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 112 639 751
Davis 413 7 420
Irvine 26 0 26
Los Angeles 0 122 122
Riverside 13 46 59
San Diego 36 43 79
San Francisco 40 0 40
Santa Barbara 3 42 45
Santa Cruz 0 45 45
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 6 6
Los Alamos 0 0 0
Other - UC 0 42 42
Other-Network UC n/a 687 687
_______ ______ _____
643 1,679 2,322
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 817 6,336 7,153
Davis 3,457 50 3,507
Irvine 109 0 109
Los Angeles 0 615 615
Riverside 1 353 354
San Diego 59 868 927
San Francisco 173 0 173
Santa Barbara 2 346 348
Santa Cruz 0 411 411
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 83 83
Los Alamos 0 0 0
Other - UC 0 257 257
Other-Network UC n/a 3,623 3,623
_______ ______ _____
4,618 12,942 17,560
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 4.2
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) 7:51
Average session length (minutes:seconds) 12:13
Longest session recorded (minutes:seconds) 342:13
Average number of searches completed per session 2.5
Retrievals per search - median 8.0
Retrievals per search - average 693.8
Retrievals per search - standard deviation 5690.9
Percent of searches completed with 0 results 25.4%
Percent of searches entered that are long 2.6%
Percent of long searches completed
(includes partial results) 85.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,985 32.1%
DISPLAY (excluding automatic displays) 2,037 32.9%
BROWSE 2 0.0%
HELP 33 0.5%
EXPLAIN 38 0.6%
SET/RESET 484 7.8%
SHOW 7 0.1%
ADD ON (AND, OR, AND NOT) 337 5.4%
LOGON or LOGOFF 926 15.0%
COMMENT 0 0.0%
SAVE 134 2.2%
USE 1 0.0%
OTHER 205 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 878 38.4% 200 22.8% 21 166.6 636.1
TITLE WORD 417 18.2% 180 43.2% 6 277.4 1672.1
EXACT TITLE 17 0.7% 9 52.9% 2 7.5 13.6
KEYWORD 576 25.2% 94 16.3% 37 1713.9 8978.3
JOURNAL 95 4.2% 48 50.5% 69 4186.9 13019.6
EXACT JOURNAL 63 2.8% 27 42.9% 1,761 4624.4 8092.1
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 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 1 0.0% 0 0.0% 144 144.0 0.0
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 7 0.3% 1 14.3% 8 31.3 60.8
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. 13 0.6% 5 38.5% 857 4885.3 11249.1
ACCESSION NO. 1 0.0% 1 100% 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 108 4.7% 16 14.8% 4 22.6 68.9
EXACT PE 20 0.9% 3 15.0% 2 3.6 5.5
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 93 4.1% 19 20.4% 9 2280.9 17116.3
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 299 15.1% 103 34.4% 7 53.9 223.2
Single 1,675 84.9% 390 23.3% 29 1211.9 7580.5
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 2 100% 1 50.0% 1 1.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 4.2%
SHORT 82.8%
LONG 1.0%
TAGS 0.0%
FIELDS 3.0%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 7.5%
COMMENTS 0.0%
Other 1.5%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 7.5%
Ten most frequent errors:
1. NS command - no next screen 33.0%
2. First word of command is invalid 32.8%
3. FIND command with invalid index name 8.0%
4. DISPLAY command contains invalid word 4.4%
5. PS command - no previous screen 2.6%
6. Search term missing from search command 2.6%
7. DATE search with unrecognized word 1.4%
8. DISPLAY command - no FIND results 1.2%
9. BROWSE command with invalid index name 1.2%
10. Index invalid in current database 1.2%
11. All others 11.6%
Ten most frequent EXPLAIN requests:
1. GUIDE 18.4%
2. FIND 15.8%
3. BIOSIS DATABASE 13.2%
4. LOCATE (BIO DB) 10.5%
5. ADDON SEARCH 7.9%
6. COMMANDS 5.3%
7. INDEXES 5.3%
8. B925 5.3%
9. Unrecognized term 5.3%
10. B321 2.6%
11. All others 10.5%
Ten most frequent HELP situations:
1. Help requested from SET DB command 29.6%
2. First word of command is invalid 15.5%
3. FIND command retrieves >1 book 11.3%
4. DISPLAY command - middle of >1 screen 8.5%
5. FIND command with invalid index name 5.6%
6. DISPLAY command - last of >1 screen 5.6%
7. DISPLAY command-first of >1 screen 4.2%
8. Multi-index search with zero results 4.2%
9. FIND command with zero results 2.8%
10. Break entered during search or display 2.8%
11. All others 9.9%
Ten most frequent SHOW requests:
1. MAIL STATUS 42.9%
2. HISTORY 42.9%
3. BIOSIS NEWS 14.3%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)