MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 04/13/02 through 04/19/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 79 225 304
Davis 126 1 127
Irvine 22 0 22
Los Angeles 0 63 63
Riverside 4 12 16
San Diego 13 37 50
San Francisco 13 0 13
Santa Barbara 1 16 17
Santa Cruz 3 22 25
Lawrence Berkeley 0 2 2
Lawrence Livermore 0 16 16
Los Alamos 0 0 0
Other - UC 0 44 44
Other-Network UC n/a 278 278
_______ ______ _____
261 716 977
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 896 2,734 26,404
BIO88 81 200 1,135
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 5 16 89
2-4 a.m. 12 24 247
4-6 a.m. 5 13 100
6-8 a.m. 28 53 485
8-10 a.m. 169 428 3,310
10-12 a.m. 167 468 4,726
12-2 p.m. 155 396 4,657
2-4 p.m. 177 571 5,211
4-6 p.m. 144 574 4,694
6-8 p.m. 56 150 1,950
8-10 p.m. 34 162 1,400
10-12 p.m. 25 79 670
__________ __________ __________ _________________
Total: 977 2,934 27,539
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 266 893 1,159
Davis 361 2 363
Irvine 36 0 36
Los Angeles 0 250 250
Riverside 17 31 48
San Diego 39 87 126
San Francisco 41 0 41
Santa Barbara 4 36 40
Santa Cruz 2 62 64
Lawrence Berkeley 0 3 3
Lawrence Livermore 0 37 37
Los Alamos 0 0 0
Other - UC 0 90 90
Other-Network UC n/a 677 677
_______ ______ _____
766 2,168 2,934
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 2,947 10,917 13,864
Davis 3,088 39 3,127
Irvine 356 0 356
Los Angeles 0 3,158 3,158
Riverside 48 381 429
San Diego 224 395 619
San Francisco 181 0 181
Santa Barbara 134 277 411
Santa Cruz 22 941 963
Lawrence Berkeley 0 29 29
Lawrence Livermore 0 57 57
Los Alamos 0 0 0
Other - UC 0 795 795
Other-Network UC n/a 3,550 3,550
_______ ______ _____
7,000 20,539 27,539
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 2.3
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) 8:20
Average session length (minutes:seconds) 14:16
Longest session recorded (minutes:seconds) 277:10
Average number of searches completed per session 3.0
Retrievals per search - median 8.0
Retrievals per search - average 1156.3
Retrievals per search - standard deviation 16807
Percent of searches completed with 0 results 25.5%
Percent of searches entered that are long 1.6%
Percent of long searches completed
(includes partial results) 59.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,619 31.6%
DISPLAY (excluding automatic displays) 2,889 34.9%
BROWSE 0 0.0%
HELP 194 2.3%
EXPLAIN 153 1.8%
SET/RESET 412 5.0%
SHOW 19 0.2%
ADD ON (AND, OR, AND NOT) 315 3.8%
LOGON or LOGOFF 1,214 14.7%
COMMENT 0 0.0%
SAVE 191 2.3%
USE 1 0.0%
OTHER 273 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 751 26.2% 155 20.6% 30 133.5 410.7
TITLE WORD 689 24.1% 273 39.6% 13 902.0 10265.5
EXACT TITLE 18 0.6% 6 33.3% 14 137.1 353.8
KEYWORD 982 34.3% 181 18.4% 28 2781.7 30782.6
JOURNAL 167 5.8% 82 49.1% 983 5389.9 10523.0
EXACT JOURNAL 43 1.5% 23 53.5% 752 7384.8 14530.1
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 2 0.1% 0 0.0% 7 7.0 0.0
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 8 0.3% 2 25.0% 3 60.3 90.4
LANGUAGE 2 0.1% 0 0.0% 118 118.0 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. 5 0.2% 0 0.0% 46 42.2 40.1
ACCESSION NO. 2 0.1% 0 0.0% 1 1.0 0.0
ISSN 1 0.0% 1 100% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 99 3.5% 8 8.1% 6 75.6 320.1
EXACT PE 26 0.9% 2 7.7% 4 17.1 54.0
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 66 2.3% 19 28.8% 15 124.6 317.6
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 255 9.8% 92 36.1% 7 47.5 178.3
Single 2,344 90.2% 566 24.1% 34 1849.8 21471.3
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 1.8%
SHORT 87.0%
LONG 1.1%
TAGS 0.6%
FIELDS 1.5%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 5.7%
COMMENTS 0.0%
Other 2.2%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 11.3%
Ten most frequent errors:
1. First word of command is invalid 31.0%
2. NS command - no next screen 24.9%
3. FIND command with invalid index name 12.7%
4. PS command - no previous screen 6.6%
5. DISPLAY command - no FIND results 3.1%
6. DATE search with unrecognized word 3.1%
7. Search term missing from search command 2.8%
8. DISPLAY command contains invalid word 2.5%
9. Valid command at an inappropriate time 2.1%
10. NS of SHOW/EXP command-no next screen 1.7%
11. All others 9.5%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 24.8%
2. GUIDE 20.3%
3. COMMANDS 9.2%
4. FIND 9.2%
5. INDEXES 8.5%
6. ADDON SEARCH 5.9%
7. DISPLAY 3.9%
8. DATABASES 2.6%
9. B334 2.0%
10. Unrecognized term 2.0%
11. All others 11.8%
Ten most frequent HELP situations:
1. Help requested from SET DB command 23.9%
2. First word of command is invalid 20.2%
3. FIND command with invalid index name 11.5%
4. DISPLAY command-first of >1 screen 6.6%
5. DISPLAY command - middle of >1 screen 5.8%
6. FIND command retrieves >1 book 4.0%
7. DISPLAY command-complete in one screen 4.0%
8. FIND command with zero results 3.7%
9. PS command - no previous screen 3.5%
10. NS command - no next screen 2.6%
11. All others 14.1%
Ten most frequent SHOW requests:
1. SEARCH 63.2%
2. HISTORY 26.3%
3. MAIL SETTINGS 5.3%
4. MAIL STATUS 5.3%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)