MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 01/26/02 through 02/01/02
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 37 300 337
Davis 204 0 204
Irvine 22 0 22
Los Angeles 0 69 69
Riverside 1 29 30
San Diego 12 69 81
San Francisco 39 0 39
Santa Barbara 2 26 28
Santa Cruz 0 33 33
Lawrence Berkeley 0 2 2
Lawrence Livermore 0 11 11
Los Alamos 0 0 0
Other - UC 3 16 19
Other-Network UC n/a 433 433
_______ ______ _____
320 988 1,308
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 1,157 3,676 29,662
BIO88 151 354 1,797
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 17 57 538
2-4 a.m. 18 23 151
4-6 a.m. 10 23 75
6-8 a.m. 37 91 573
8-10 a.m. 186 553 4,384
10-12 a.m. 249 669 4,524
12-2 p.m. 232 704 5,130
2-4 p.m. 251 762 6,381
4-6 p.m. 173 646 4,879
6-8 p.m. 77 266 2,235
8-10 p.m. 33 124 1,453
10-12 p.m. 25 112 1,136
__________ __________ __________ _________________
Total: 1,308 4,030 31,459
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 117 920 1,037
Davis 813 0 813
Irvine 60 0 60
Los Angeles 0 270 270
Riverside 3 147 150
San Diego 29 199 228
San Francisco 162 0 162
Santa Barbara 0 96 96
Santa Cruz 0 103 103
Lawrence Berkeley 0 6 6
Lawrence Livermore 0 59 59
Los Alamos 0 0 0
Other - UC 7 50 57
Other-Network UC n/a 989 989
_______ ______ _____
1,191 2,839 4,030
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,074 8,134 9,208
Davis 8,116 0 8,116
Irvine 275 0 275
Los Angeles 0 2,949 2,949
Riverside 32 921 953
San Diego 68 1,792 1,860
San Francisco 945 0 945
Santa Barbara 0 471 471
Santa Cruz 0 946 946
Lawrence Berkeley 0 5 5
Lawrence Livermore 0 215 215
Los Alamos 0 0 0
Other - UC 128 252 380
Other-Network UC n/a 5,136 5,136
_______ ______ _____
10,638 20,821 31,459
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.0
Standard deviation in seconds 3.6
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) 15:46
Longest session recorded (minutes:seconds) 354:50
Average number of searches completed per session 3.1
Retrievals per search - median 7.0
Retrievals per search - average 1070.3
Retrievals per search - standard deviation 11290
Percent of searches completed with 0 results 23.7%
Percent of searches entered that are long 2.6%
Percent of long searches completed
(includes partial results) 78.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 3,379 29.8%
DISPLAY (excluding automatic displays) 4,283 37.8%
BROWSE 0 0.0%
HELP 126 1.1%
EXPLAIN 103 0.9%
SET/RESET 633 5.6%
SHOW 28 0.2%
ADD ON (AND, OR, AND NOT) 651 5.7%
LOGON or LOGOFF 1,490 13.2%
COMMENT 1 0.0%
SAVE 262 2.3%
USE 1 0.0%
OTHER 371 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 1,296 33.4% 279 21.5% 22 168.6 777.7
TITLE WORD 750 19.3% 277 36.9% 6 952.8 10621.1
EXACT TITLE 27 0.7% 17 63.0% 1 4.5 10.7
KEYWORD 1,162 29.9% 231 19.9% 38 2573.0 18486.3
JOURNAL 159 4.1% 60 37.7% 409 5459.2 14402.4
EXACT JOURNAL 54 1.4% 26 48.1% 1,149 3546.0 5512.3
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 2 0.1% 1 50.0% 4 4.0 0.0
SUPERTAXA 6 0.2% 0 0.0% 14 446.8 1069.5
MAJ CONCEPT CDES 0 0.0% 0 0.0% 0 0.0 0.0
CONCEPT CODES 3 0.1% 0 0.0% 4 9.7 11.6
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 11 0.3% 1 9.1% 79 73.2 67.4
LANGUAGE 1 0.0% 0 0.0% 7 7.0 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. 36 0.9% 9 25.0% 30 2200.1 9005.1
ACCESSION NO. 6 0.2% 0 0.0% 1 1.0 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 189 4.9% 27 14.3% 4 251.9 2581.7
EXACT PE 41 1.1% 0 0.0% 2 16.3 56.3
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 141 3.6% 29 20.6% 21 3020.0 30422.6
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 500 14.9% 163 32.6% 7 68.9 289.4
Single 2,851 85.1% 621 21.8% 28 1817.5 15013.3
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 4.1%
SHORT 81.0%
LONG 1.9%
TAGS 0.8%
FIELDS 3.8%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 6.1%
COMMENTS 0.0%
Other 2.4%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.1%
Ten most frequent errors:
1. NS command - no next screen 32.3%
2. First word of command is invalid 24.9%
3. FIND command with invalid index name 10.9%
4. NS of SHOW/EXP command-no next screen 5.3%
5. DISPLAY command - no FIND results 3.4%
6. PS command - no previous screen 2.7%
7. DATE search with unrecognized word 2.7%
8. DISPLAY command contains invalid word 2.5%
9. Valid command at an inappropriate time 1.4%
10. Index invalid in current database 1.3%
11. All others 12.5%
Ten most frequent EXPLAIN requests:
1. GUIDE 22.3%
2. LOCATE (BIO DB) 16.5%
3. FIND 11.7%
4. COMMANDS 7.8%
5. ADDON SEARCH 5.8%
6. BIOSIS DATABASE 3.9%
7. LIMIT 3.9%
8. MAIL 3.9%
9. Unrecognized term 3.9%
10. DATE 1.9%
11. All others 18.4%
Ten most frequent HELP situations:
1. Help requested from SET DB command 19.2%
2. First word of command is invalid 17.9%
3. FIND command with invalid index name 13.1%
4. DISPLAY command - middle of >1 screen 10.0%
5. DISPLAY command-first of >1 screen 5.7%
6. FIND command retrieves >1 book 4.8%
7. 3 HELP commands issued from same code 3.9%
8. DISPLAY command-complete in one screen 3.5%
9. FIND command with zero results 3.1%
10. NS command - no next screen 2.2%
11. All others 16.6%
Ten most frequent SHOW requests:
1. HISTORY 81.8%
2. SEARCH 13.6%
3. SETTINGS 4.5%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)