MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 12/23/00 through 12/29/00
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 0 57 57
Davis 74 1 75
Irvine 8 0 8
Los Angeles 10 36 46
Riverside 0 19 19
San Diego 1 65 66
San Francisco 33 0 33
Santa Barbara 0 20 20
Santa Cruz 5 17 22
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 3 3
Los Alamos 0 0 0
Other - UC 0 3 3
Other-Network UC n/a 248 248
_______ ______ _____
131 469 600
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 532 1,571 21,122
BIO88 68 172 1,186
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 7 33 7,174
2-4 a.m. 2 3 178
4-6 a.m. 4 10 95
6-8 a.m. 9 22 110
8-10 a.m. 81 170 985
10-12 a.m. 135 375 3,175
12-2 p.m. 99 256 1,868
2-4 p.m. 126 401 4,299
4-6 p.m. 79 258 2,281
6-8 p.m. 22 97 942
8-10 p.m. 26 82 512
10-12 p.m. 10 36 689
__________ __________ __________ _________________
Total: 600 1,743 22,308
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 0 189 189
Davis 249 4 253
Irvine 23 0 23
Los Angeles 23 140 163
Riverside 0 36 36
San Diego 9 167 176
San Francisco 115 0 115
Santa Barbara 0 96 96
Santa Cruz 23 73 96
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 8 8
Los Alamos 0 0 0
Other - UC 0 8 8
Other-Network UC n/a 580 580
_______ ______ _____
442 1,301 1,743
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 0 1,620 1,620
Davis 2,148 40 2,188
Irvine 75 0 75
Los Angeles 228 724 952
Riverside 0 303 303
San Diego 36 1,047 1,083
San Francisco 893 0 893
Santa Barbara 0 1,321 1,321
Santa Cruz 260 1,494 1,754
Lawrence Berkeley 0 0 0
Lawrence Livermore 0 70 70
Los Alamos 0 0 0
Other - UC 0 58 58
Other-Network UC n/a 11,991 11,991
_______ ______ _____
3,640 18,668 22,308
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.6
Standard deviation in seconds 2.1
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) 11:05
Average session length (minutes:seconds) 15:31
Longest session recorded (minutes:seconds) 204:46
Average number of searches completed per session 2.9
Retrievals per search - median 9.0
Retrievals per search - average 1114.5
Retrievals per search - standard deviation 8937.9
Percent of searches completed with 0 results 21.5%
Percent of searches entered that are long 2.6%
Percent of long searches completed
(includes partial results) 60.0%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,532 32.4%
DISPLAY (excluding automatic displays) 1,697 35.9%
BROWSE 0 0.0%
HELP 19 0.4%
EXPLAIN 42 0.9%
SET/RESET 314 6.6%
SHOW 10 0.2%
ADD ON (AND, OR, AND NOT) 211 4.5%
LOGON or LOGOFF 621 13.1%
COMMENT 0 0.0%
SAVE 170 3.6%
USE 0 0.0%
OTHER 117 2.5%
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 541 31.4% 116 21.4% 21 98.9 321.1
TITLE WORD 294 17.1% 103 35.0% 8 738.1 6297.4
EXACT TITLE 2 0.1% 2 100% 0 0.0 0.0
KEYWORD 678 39.3% 113 16.7% 26 2764.9 14789.0
JOURNAL 72 4.2% 32 44.4% 24 1611.6 4156.3
EXACT JOURNAL 19 1.1% 10 52.6% 11 1535.9 2961.5
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 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 9 0.5% 3 33.3% 3 5.8 6.8
LANGUAGE 1 0.1% 0 0.0% 5 5.0 0.0
ADDED 2 0.1% 0 0.0% 8 8.0 8.5
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 1 0.1% 0 0.0% 1,494 1494.0 0.0
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 31 1.8% 3 9.7% 5 23.2 50.3
EXACT PE 4 0.2% 0 0.0% 2 2.3 1.5
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 4.0% 15 21.7% 14 499.4 1966.4
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 189 12.5% 64 33.9% 5 103.4 945.9
Single 1,324 87.5% 260 19.6% 28 1716.9 11189.4
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 4.5%
SHORT 86.3%
LONG 1.0%
TAGS 1.6%
FIELDS 1.4%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 2.7%
COMMENTS 0.0%
Other 2.4%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 9.1%
Ten most frequent errors:
1. NS command - no next screen 34.5%
2. First word of command is invalid 30.4%
3. FIND command with invalid index name 8.9%
4. Max. # of ports to a Z39 db are in use 6.1%
5. PS command - no previous screen 3.2%
6. DISPLAY command contains invalid word 1.9%
7. DISPLAY command-record numbers too large 1.3%
8. Index invalid in current database 1.3%
9. DISPLAY command - no FIND results 1.1%
10. DATE search with unrecognized word 1.1%
11. All others 10.4%
Ten most frequent EXPLAIN requests:
1. GUIDE 19.0%
2. Unrecognized term 16.7%
3. BIOSIS DATABASE 9.5%
4. B334 9.5%
5. LOCATE (BIO DB) 7.1%
6. FIND 4.8%
7. BIOSIS NEWS 4.8%
8. COMMANDS 2.4%
9. B328 2.4%
10. B335 2.4%
11. All others 21.4%
Ten most frequent HELP situations:
1. Help requested from SET DB command 24.6%
2. First word of command is invalid 11.5%
3. FIND command with invalid index name 9.8%
4. FIND command with zero results 9.8%
5. DISPLAY command-first of >1 screen 8.2%
6. Multi-index search with zero results 6.6%
7. NS of SHOW/EXP command-no next screen 6.6%
8. DISPLAY command - last of >1 screen 4.9%
9. FIND command retrieves >1 book 3.3%
10. 244 3.3%
11. All others 11.5%
Ten most frequent SHOW requests:
1. HISTORY 75.0%
2. SETTINGS 12.5%
3. GLOSSARY 12.5%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)