MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 02/17/01 through 02/23/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 149 300 449
Davis 221 2 223
Irvine 54 0 54
Los Angeles 24 43 67
Riverside 27 34 61
San Diego 21 83 104
San Francisco 49 0 49
Santa Barbara 17 43 60
Santa Cruz 15 55 70
Lawrence Berkeley 0 10 10
Lawrence Livermore 0 38 38
Los Alamos 0 0 0
Other - UC 1 17 18
Other-Network UC n/a 485 485
_______ ______ _____
578 1,110 1,688
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 1,510 4,643 42,501
BIO88 178 404 3,038
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 15 76 472
2-4 a.m. 10 29 86
4-6 a.m. 9 22 156
6-8 a.m. 34 134 667
8-10 a.m. 178 409 2,960
10-12 a.m. 335 967 7,405
12-2 p.m. 317 913 8,286
2-4 p.m. 336 911 8,295
4-6 p.m. 241 787 7,600
6-8 p.m. 127 431 5,100
8-10 p.m. 59 262 3,386
10-12 p.m. 27 106 1,126
__________ __________ __________ _________________
Total: 1,688 5,047 45,539
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 531 970 1,501
Davis 742 9 751
Irvine 181 0 181
Los Angeles 53 141 194
Riverside 73 101 174
San Diego 71 318 389
San Francisco 208 0 208
Santa Barbara 117 98 215
Santa Cruz 38 171 209
Lawrence Berkeley 0 28 28
Lawrence Livermore 0 127 127
Los Alamos 0 0 0
Other - UC 2 44 46
Other-Network UC n/a 1,024 1,024
_______ ______ _____
2,016 3,031 5,047
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 6,409 10,601 17,010
Davis 6,730 60 6,790
Irvine 1,750 0 1,750
Los Angeles 542 1,311 1,853
Riverside 524 777 1,301
San Diego 156 2,047 2,203
San Francisco 1,136 0 1,136
Santa Barbara 512 1,925 2,437
Santa Cruz 524 2,227 2,751
Lawrence Berkeley 0 278 278
Lawrence Livermore 0 650 650
Los Alamos 0 0 0
Other - UC 18 456 474
Other-Network UC n/a 6,906 6,906
_______ ______ _____
18,301 27,238 45,539
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.1
Standard deviation in seconds 5.4
Display response time from receipt of command at
DLA until transmission of a complete screen:
Average in seconds 0.1
Standard deviation in seconds 0.2
2.0 BIOSIS Databases Detailed Statistics
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Median session length (minutes:seconds) 8:28
Average session length (minutes:seconds) 13:10
Longest session recorded (minutes:seconds) 158:26
Average number of searches completed per session 3.0
Retrievals per search - median 10.0
Retrievals per search - average 977.4
Retrievals per search - standard deviation 11480
Percent of searches completed with 0 results 22.8%
Percent of searches entered that are long 1.9%
Percent of long searches completed
(includes partial results) 62.8%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 4,356 30.1%
DISPLAY (excluding automatic displays) 5,474 37.8%
BROWSE 0 0.0%
HELP 208 1.4%
EXPLAIN 189 1.3%
SET/RESET 806 5.6%
SHOW 39 0.3%
ADD ON (AND, OR, AND NOT) 691 4.8%
LOGON or LOGOFF 1,870 12.9%
COMMENT 0 0.0%
SAVE 336 2.3%
USE 3 0.0%
OTHER 506 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 1,672 34.6% 339 20.3% 23 136.2 448.7
TITLE WORD 835 17.3% 331 39.6% 8 647.9 7095.8
EXACT TITLE 49 1.0% 27 55.1% 3 114.3 380.3
KEYWORD 1,678 34.7% 259 15.4% 41 2462.7 20506.8
JOURNAL 157 3.3% 70 44.6% 428 5928.2 14598.4
EXACT JOURNAL 87 1.8% 36 41.4% 1,207 5147.7 13992.2
SOURCE 3 0.1% 2 66.7% 550 550.0 0.0
CONFERENCE 5 0.1% 3 60.0% 64 64.0 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 0.0% 0 0.0% 16 16.0 0.0
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 18 0.4% 5 27.8% 3 54.6 118.8
LANGUAGE 2 0.0% 0 0.0% 218 217.5 253.9
ADDED 2 0.0% 0 0.0% 15 14.5 17.7
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 8 0.2% 2 25.0% 31 56.7 72.8
ACCESSION NO. 2 0.0% 0 0.0% 1 1.0 0.0
ISSN 2 0.0% 1 50.0% 1,015 1015.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 138 2.9% 26 18.8% 5 261.4 1687.1
EXACT PE 34 0.7% 1 2.9% 6 44.4 210.3
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 135 2.8% 28 20.7% 19 79.8 184.5
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 490 11.4% 155 31.6% 5 32.2 111.3
Single 3,825 88.6% 811 21.2% 36 1593.9 14754.7
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 87.0%
LONG 1.5%
TAGS 0.1%
FIELDS 1.4%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.3%
COMMENTS 0.0%
Other 1.3%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.8%
Ten most frequent errors:
1. NS command - no next screen 33.0%
2. First word of command is invalid 27.2%
3. FIND command with invalid index name 10.9%
4. PS command - no previous screen 5.0%
5. DISPLAY command contains invalid word 4.1%
6. Valid command at an inappropriate time 2.2%
7. Index invalid in current database 2.0%
8. Search term missing from search command 1.7%
9. Max. # of ports to a Z39 db are in use 1.6%
10. DATE search with unrecognized word 1.5%
11. All others 11.0%
Ten most frequent EXPLAIN requests:
1. GUIDE 20.6%
2. FIND 19.0%
3. LOCATE (BIO DB) 12.7%
4. COMMANDS 7.9%
5. INDEXES 7.4%
6. Unrecognized term 5.3%
7. BIOSIS DATABASE 3.7%
8. ADDON SEARCH 2.6%
9. DISPLAY 2.1%
10. LOCATIONS 1.6%
11. All others 16.9%
Ten most frequent HELP situations:
1. Help requested from SET DB command 24.4%
2. First word of command is invalid 13.4%
3. FIND command with invalid index name 11.3%
4. FIND command with zero results 6.5%
5. DISPLAY command-first of >1 screen 5.3%
6. FIND command retrieves >1 book 4.5%
7. DISPLAY command - middle of >1 screen 4.5%
8. F/BR with index invalid in current DB 4.5%
9. DISPLAY command - last of >1 screen 3.5%
10. DISPLAY command-complete in one screen 3.0%
11. All others 18.9%
Ten most frequent SHOW requests:
1. HISTORY 73.0%
2. SEARCH 8.1%
3. BIOSIS NEWS 5.4%
4. MAIL STATUS 5.4%
5. SETTINGS 2.7%
6. GLOSSARY 2.7%
7. MAIL SETTINGS 2.7%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)