MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 12/08/01 through 12/14/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 31 159 190
Davis 102 4 106
Irvine 10 0 10
Los Angeles 1 51 52
Riverside 5 12 17
San Diego 8 37 45
San Francisco 9 0 9
Santa Barbara 0 2 2
Santa Cruz 2 26 28
Lawrence Berkeley 0 3 3
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 20 20
Other-Network UC n/a 384 384
_______ ______ _____
168 698 866
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 763 1,965 16,557
BIO88 103 183 593
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 5 12 215
2-4 a.m. 7 15 102
4-6 a.m. 3 10 50
6-8 a.m. 43 98 322
8-10 a.m. 111 232 1,409
10-12 a.m. 201 442 3,278
12-2 p.m. 136 402 3,831
2-4 p.m. 168 364 2,917
4-6 p.m. 117 337 3,394
6-8 p.m. 41 123 826
8-10 p.m. 22 82 431
10-12 p.m. 12 31 375
__________ __________ __________ _________________
Total: 866 2,148 17,150
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 101 485 586
Davis 269 5 274
Irvine 20 0 20
Los Angeles 3 125 128
Riverside 11 24 35
San Diego 45 100 145
San Francisco 20 0 20
Santa Barbara 0 13 13
Santa Cruz 5 83 88
Lawrence Berkeley 0 4 4
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 59 59
Other-Network UC n/a 776 776
_______ ______ _____
474 1,674 2,148
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,524 4,875 6,399
Davis 1,864 5 1,869
Irvine 175 0 175
Los Angeles 39 1,419 1,458
Riverside 41 260 301
San Diego 45 1,404 1,449
San Francisco 127 0 127
Santa Barbara 0 223 223
Santa Cruz 130 412 542
Lawrence Berkeley 0 68 68
Lawrence Livermore 0 0 0
Los Alamos 0 0 0
Other - UC 0 321 321
Other-Network UC n/a 4,218 4,218
_______ ______ _____
3,945 13,205 17,150
1.4 Response time
__________________
Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 1.3
Standard deviation in seconds 14.0
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) 9:34
Average session length (minutes:seconds) 13:46
Longest session recorded (minutes:seconds) 164:38
Average number of searches completed per session 2.5
Retrievals per search - median 7.0
Retrievals per search - average 965.5
Retrievals per search - standard deviation 10905
Percent of searches completed with 0 results 24.9%
Percent of searches entered that are long 2.2%
Percent of long searches completed
(includes partial results) 79.2%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 1,842 31.4%
DISPLAY (excluding automatic displays) 1,983 33.8%
BROWSE 0 0.0%
HELP 48 0.8%
EXPLAIN 55 0.9%
SET/RESET 492 8.4%
SHOW 24 0.4%
ADD ON (AND, OR, AND NOT) 306 5.2%
LOGON or LOGOFF 832 14.2%
COMMENT 0 0.0%
SAVE 112 1.9%
USE 1 0.0%
OTHER 178 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 709 33.9% 142 20.0% 17 127.1 481.3
TITLE WORD 414 19.8% 184 44.4% 4 325.3 1926.8
EXACT TITLE 22 1.1% 13 59.1% 18 92.1 202.4
KEYWORD 612 29.2% 111 18.1% 33 1532.8 9722.4
JOURNAL 71 3.4% 33 46.5% 152 2770.2 6649.5
EXACT JOURNAL 38 1.8% 19 50.0% 897 2921.7 4169.6
SOURCE 2 0.1% 1 50.0% 57 57.0 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 18 0.9% 3 16.7% 12 98.0 220.7
LANGUAGE 6 0.3% 0 0.0% 481 1985.5 2640.3
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. 1 0.0% 1 100% 0 0.0 0.0
ACCESSION NO. 1 0.0% 1 100% 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 99 4.7% 15 15.2% 5 262.1 1764.7
EXACT PE 27 1.3% 3 11.1% 2 4.3 6.2
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 73 3.5% 13 17.8% 10 142.1 706.7
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 243 13.3% 78 32.1% 7 105.2 598.4
Single 1,589 86.7% 380 23.9% 22 897.8 6505.0
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 4.7%
SHORT 81.9%
LONG 2.0%
TAGS 0.0%
FIELDS 2.3%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 7.4%
COMMENTS 0.0%
Other 1.6%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 8.8%
Ten most frequent errors:
1. NS command - no next screen 29.5%
2. First word of command is invalid 29.2%
3. FIND command with invalid index name 11.8%
4. DATE search with unrecognized word 4.2%
5. PS command - no previous screen 3.9%
6. Max. # of ports to a Z39 db are in use 2.5%
7. Valid command at an inappropriate time 2.3%
8. Search term missing from search command 2.3%
9. DISPLAY command contains invalid word 1.9%
10. Index invalid in current database 1.9%
11. All others 10.5%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 14.5%
2. Unrecognized term 12.7%
3. INDEXES 10.9%
4. COMMANDS 9.1%
5. FIND 9.1%
6. BIOSIS DATABASE 7.3%
7. GUIDE 7.3%
8. DATABASES 5.5%
9. DATE 3.6%
10. AUTHOR 1.8%
11. All others 18.2%
Ten most frequent HELP situations:
1. Help requested from SET DB command 19.4%
2. FIND command with invalid index name 9.7%
3. FIND command with zero results 8.7%
4. First word of command is invalid 7.8%
5. DISPLAY command-first of >1 screen 7.8%
6. Multi-index search with zero results 5.8%
7. FIND command retrieves >1 book 4.9%
8. DISPLAY command - middle of >1 screen 4.9%
9. DISPLAY command - last of >1 screen 4.9%
10. 117 3.9%
11. All others 22.3%
Ten most frequent SHOW requests:
1. HISTORY 46.7%
2. SEARCH 33.3%
3. GLOSSARY 13.3%
4. B374 6.7%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)