MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 03/30/02 through 04/05/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 13 164 177
Davis 136 1 137
Irvine 24 0 24
Los Angeles 2 53 55
Riverside 7 16 23
San Diego 5 35 40
San Francisco 23 0 23
Santa Barbara 3 11 14
Santa Cruz 2 19 21
Lawrence Berkeley 0 8 8
Lawrence Livermore 0 1 1
Los Alamos 0 0 0
Other - UC 0 21 21
Other-Network UC n/a 408 408
_______ ______ _____
215 737 952
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 825 2,345 25,012
BIO88 127 321 2,714
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 7 25 120
2-4 a.m. 13 21 83
4-6 a.m. 4 13 54
6-8 a.m. 29 124 2,011
8-10 a.m. 189 451 2,872
10-12 a.m. 197 532 5,432
12-2 p.m. 132 325 3,830
2-4 p.m. 171 475 7,015
4-6 p.m. 114 336 3,432
6-8 p.m. 54 200 1,743
8-10 p.m. 20 79 453
10-12 p.m. 22 85 681
__________ __________ __________ _________________
Total: 952 2,666 27,726
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 42 450 492
Davis 629 2 631
Irvine 66 0 66
Los Angeles 7 122 129
Riverside 18 43 61
San Diego 11 95 106
San Francisco 77 0 77
Santa Barbara 3 57 60
Santa Cruz 1 47 48
Lawrence Berkeley 0 13 13
Lawrence Livermore 0 3 3
Los Alamos 0 0 0
Other - UC 0 65 65
Other-Network UC n/a 915 915
_______ ______ _____
854 1,812 2,666
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 461 7,572 8,033
Davis 5,582 3 5,585
Irvine 585 0 585
Los Angeles 19 1,078 1,097
Riverside 46 562 608
San Diego 14 1,194 1,208
San Francisco 469 0 469
Santa Barbara 8 2,669 2,677
Santa Cruz 3 709 712
Lawrence Berkeley 0 112 112
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 380 380
Other-Network UC n/a 6,260 6,260
_______ ______ _____
7,187 20,539 27,726
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.0
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) 9:01
Average session length (minutes:seconds) 14:27
Longest session recorded (minutes:seconds) 578:01
Average number of searches completed per session 2.8
Retrievals per search - median 9.0
Retrievals per search - average 1882.4
Retrievals per search - standard deviation 25441
Percent of searches completed with 0 results 24.1%
Percent of searches entered that are long 1.3%
Percent of long searches completed
(includes partial results) 82.9%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,241 31.5%
DISPLAY (excluding automatic displays) 2,593 36.5%
BROWSE 0 0.0%
HELP 53 0.7%
EXPLAIN 50 0.7%
SET/RESET 512 7.2%
SHOW 5 0.1%
ADD ON (AND, OR, AND NOT) 425 6.0%
LOGON or LOGOFF 945 13.3%
COMMENT 0 0.0%
SAVE 65 0.9%
USE 1 0.0%
OTHER 213 3.0%
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 677 27.4% 137 20.2% 20 104.7 299.3
TITLE WORD 578 23.4% 246 42.6% 18 781.4 4778.4
EXACT TITLE 8 0.3% 5 62.5% 2 5.0 6.1
KEYWORD 837 33.8% 145 17.3% 33 5891.5 48834.7
JOURNAL 82 3.3% 21 25.6% 233 5795.6 26572.4
EXACT JOURNAL 43 1.7% 23 53.5% 1,100 4147.1 7436.8
SOURCE 5 0.2% 4 80.0% 1,709 1709.0 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 1 0.0% 0 0.0% 10 10.0 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% 3 3.0 1.0
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 11 0.4% 3 27.3% 30 582.4 1095.4
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 0.1% 0 0.0% 3 3934.3 6811.0
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 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 126 5.1% 18 14.3% 4 32.1 79.9
EXACT PE 29 1.2% 2 6.9% 2 4.9 4.9
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 69 2.8% 10 14.5% 12 1461.6 3535.8
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 232 10.4% 71 30.6% 6 527.2 2218.2
Single 2,000 89.6% 471 23.5% 27 3118.1 33453.4
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 4.4%
SHORT 77.3%
LONG 2.6%
TAGS 0.9%
FIELDS 6.1%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 7.2%
COMMENTS 0.0%
Other 1.4%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 7.8%
Ten most frequent errors:
1. NS command - no next screen 30.0%
2. First word of command is invalid 22.0%
3. FIND command with invalid index name 9.2%
4. DISPLAY command contains invalid word 5.5%
5. DISPLAY command - no FIND results 4.8%
6. DATE search with unrecognized word 4.8%
7. PS command - no previous screen 2.5%
8. Index invalid in current database 2.2%
9. Valid command at an inappropriate time 1.8%
10. Search term missing from search command 1.7%
11. All others 15.6%
Ten most frequent EXPLAIN requests:
1. GUIDE 22.0%
2. INDEXES 18.0%
3. BIOSIS DATABASE 6.0%
4. FIND 6.0%
5. CONCEPT CODES 6.0%
6. LOCATE (BIO DB) 6.0%
7. COMMANDS 4.0%
8. DISPLAY 4.0%
9. Unrecognized term 4.0%
10. 1211 4.0%
11. All others 20.0%
Ten most frequent HELP situations:
1. Help requested from SET DB command 30.1%
2. First word of command is invalid 10.7%
3. FIND command with invalid index name 9.7%
4. FIND command with zero results 8.7%
5. DISPLAY command-first of >1 screen 7.8%
6. PS command - no previous screen 4.9%
7. F/BR with index invalid in current DB 4.9%
8. Valid command at an inappropriate time 2.9%
9. 1245 2.9%
10. BROWSE command with invalid index name 1.9%
11. All others 15.5%
Ten most frequent SHOW requests:
1. HISTORY 60.0%
2. GLOSSARY 20.0%
3. SEARCH 20.0%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)