MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 03/23/02 through 03/29/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 38 231 269
Davis 169 2 171
Irvine 26 0 26
Los Angeles 0 72 72
Riverside 0 23 23
San Diego 10 45 55
San Francisco 56 0 56
Santa Barbara 1 33 34
Santa Cruz 1 31 32
Lawrence Berkeley 0 3 3
Lawrence Livermore 0 6 6
Los Alamos 0 0 0
Other - UC 0 27 27
Other-Network UC n/a 414 414
_______ ______ _____
301 887 1,188
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 1,034 3,513 28,921
BIO88 154 441 1,652
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 5 14 124
2-4 a.m. 11 12 131
4-6 a.m. 4 1 0
6-8 a.m. 23 77 2,334
8-10 a.m. 197 565 3,722
10-12 a.m. 209 657 3,614
12-2 p.m. 194 580 4,481
2-4 p.m. 261 922 6,742
4-6 p.m. 183 790 5,797
6-8 p.m. 75 208 2,833
8-10 p.m. 11 49 326
10-12 p.m. 15 79 469
__________ __________ __________ _________________
Total: 1,188 3,954 30,573
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 147 666 813
Davis 1,144 3 1,147
Irvine 88 0 88
Los Angeles 0 269 269
Riverside 0 77 77
San Diego 48 192 240
San Francisco 212 0 212
Santa Barbara 0 117 117
Santa Cruz 1 92 93
Lawrence Berkeley 0 4 4
Lawrence Livermore 0 24 24
Los Alamos 0 0 0
Other - UC 0 99 99
Other-Network UC n/a 771 771
_______ ______ _____
1,640 2,314 3,954
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 618 8,486 9,104
Davis 4,622 0 4,622
Irvine 737 0 737
Los Angeles 0 3,877 3,877
Riverside 0 707 707
San Diego 301 1,569 1,870
San Francisco 1,637 0 1,637
Santa Barbara 0 2,637 2,637
Santa Cruz 35 738 773
Lawrence Berkeley 0 47 47
Lawrence Livermore 0 208 208
Los Alamos 0 0 0
Other - UC 0 1,002 1,002
Other-Network UC n/a 3,352 3,352
_______ ______ _____
7,950 22,623 30,573
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.7
Standard deviation in seconds 2.9
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) 11:01
Average session length (minutes:seconds) 14:39
Longest session recorded (minutes:seconds) 267:31
Average number of searches completed per session 3.3
Retrievals per search - median 8.0
Retrievals per search - average 662.4
Retrievals per search - standard deviation 10626
Percent of searches completed with 0 results 24.6%
Percent of searches entered that are long 1.7%
Percent of long searches completed
(includes partial results) 60.3%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,443 32.7%
DISPLAY (excluding automatic displays) 3,955 37.6%
BROWSE 0 0.0%
HELP 67 0.6%
EXPLAIN 53 0.5%
SET/RESET 622 5.9%
SHOW 26 0.2%
ADD ON (AND, OR, AND NOT) 511 4.9%
LOGON or LOGOFF 1,241 11.8%
COMMENT 0 0.0%
SAVE 294 2.8%
USE 1 0.0%
OTHER 316 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 897 24.0% 172 19.2% 25 133.3 424.1
TITLE WORD 1,153 30.9% 383 33.2% 14 291.7 4447.3
EXACT TITLE 11 0.3% 4 36.4% 1 5.0 10.1
KEYWORD 1,232 33.0% 260 21.1% 23 1941.1 20815.9
JOURNAL 128 3.4% 49 38.3% 999 2911.5 6081.2
EXACT JOURNAL 48 1.3% 18 37.5% 203 2660.6 4244.8
SOURCE 4 0.1% 3 75.0% 3 3.0 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 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 0.2% 2 28.6% 8 848.0 1441.1
LANGUAGE 2 0.1% 1 50.0% 122 122.0 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. 12 0.3% 6 50.0% 30 31.0 18.3
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 123 3.3% 20 16.3% 6 22.8 51.2
EXACT PE 24 0.6% 0 0.0% 7 13.8 17.0
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 94 2.5% 21 22.3% 13 117.8 243.8
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 296 8.7% 104 35.1% 6 73.1 304.1
Single 3,119 91.3% 720 23.1% 23 1044.5 13568.3
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 2.7%
SHORT 86.1%
LONG 1.5%
TAGS 0.7%
FIELDS 2.3%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 5.2%
COMMENTS 0.0%
Other 1.4%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 7.5%
Ten most frequent errors:
1. NS command - no next screen 33.7%
2. First word of command is invalid 25.1%
3. FIND command with invalid index name 9.1%
4. DISPLAY command - no FIND results 7.4%
5. DATE search with unrecognized word 4.5%
6. DISPLAY command contains invalid word 3.8%
7. Search term missing from search command 2.0%
8. PS command - no previous screen 1.8%
9. Valid command at an inappropriate time 1.7%
10. Command contains escape or arrow key 1.1%
11. All others 9.9%
Ten most frequent EXPLAIN requests:
1. GUIDE 22.6%
2. LOCATE (BIO DB) 17.0%
3. FIND 15.1%
4. INDEXES 11.3%
5. BIOSIS DATABASE 5.7%
6. MAIL 5.7%
7. B342 3.8%
8. DISPLAY 3.8%
9. Unrecognized term 3.8%
10. ADDON SEARCH 3.8%
11. All others 7.5%
Ten most frequent HELP situations:
1. Help requested from SET DB command 29.2%
2. First word of command is invalid 14.2%
3. FIND command with invalid index name 9.2%
4. FIND command with zero results 6.7%
5. DISPLAY command contains invalid word 5.0%
6. DISPLAY command-complete in one screen 5.0%
7. DISPLAY command - middle of >1 screen 5.0%
8. DISPLAY command-first of >1 screen 4.2%
9. 212 3.3%
10. NS command - no next screen 2.5%
11. All others 15.8%
Ten most frequent SHOW requests:
1. HISTORY 77.8%
2. DISEASE INDEX 11.1%
3. SEARCH 11.1%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)