MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 06/30/01 through 07/06/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 43 217 260
Davis 150 5 155
Irvine 29 0 29
Los Angeles 0 38 38
Riverside 7 40 47
San Diego 7 18 25
San Francisco 33 0 33
Santa Barbara 0 12 12
Santa Cruz 4 29 33
Lawrence Berkeley 0 5 5
Lawrence Livermore 0 13 13
Los Alamos 0 0 0
Other - UC 0 20 20
Other-Network UC n/a 277 277
_______ ______ _____
273 674 947
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 846 2,551 23,615
BIO88 101 221 1,220
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 14 51 177
2-4 a.m. 3 9 69
4-6 a.m. 6 47 328
6-8 a.m. 31 102 745
8-10 a.m. 108 291 3,015
10-12 a.m. 204 559 4,955
12-2 p.m. 149 503 3,734
2-4 p.m. 225 587 6,503
4-6 p.m. 125 349 2,797
6-8 p.m. 41 115 842
8-10 p.m. 20 75 760
10-12 p.m. 21 84 910
__________ __________ __________ _________________
Total: 947 2,772 24,835
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 212 620 832
Davis 623 16 639
Irvine 56 0 56
Los Angeles 0 69 69
Riverside 8 85 93
San Diego 50 46 96
San Francisco 122 0 122
Santa Barbara 0 52 52
Santa Cruz 7 119 126
Lawrence Berkeley 0 13 13
Lawrence Livermore 0 52 52
Los Alamos 0 0 0
Other - UC 0 44 44
Other-Network UC n/a 578 578
_______ ______ _____
1,078 1,694 2,772
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 1,723 6,882 8,605
Davis 5,934 48 5,982
Irvine 305 0 305
Los Angeles 0 433 433
Riverside 704 1,314 2,018
San Diego 135 587 722
San Francisco 522 0 522
Santa Barbara 0 709 709
Santa Cruz 69 584 653
Lawrence Berkeley 0 39 39
Lawrence Livermore 0 467 467
Los Alamos 0 0 0
Other - UC 0 246 246
Other-Network UC n/a 4,134 4,134
_______ ______ _____
9,392 15,443 24,835
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 3.8
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) 10:15
Average session length (minutes:seconds) 13:17
Longest session recorded (minutes:seconds) 194:04
Average number of searches completed per session 2.9
Retrievals per search - median 8.0
Retrievals per search - average 1893.8
Retrievals per search - standard deviation 33738
Percent of searches completed with 0 results 24.7%
Percent of searches entered that are long 1.7%
Percent of long searches completed
(includes partial results) 64.6%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 2,474 32.1%
DISPLAY (excluding automatic displays) 2,838 36.9%
BROWSE 0 0.0%
HELP 67 0.9%
EXPLAIN 56 0.7%
SET/RESET 504 6.5%
SHOW 19 0.2%
ADD ON (AND, OR, AND NOT) 298 3.9%
LOGON or LOGOFF 998 13.0%
COMMENT 0 0.0%
SAVE 176 2.3%
USE 3 0.0%
OTHER 265 3.4%
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 973 35.7% 196 20.1% 22 207.3 1808.2
TITLE WORD 541 19.9% 214 39.6% 5 232.3 1402.6
EXACT TITLE 15 0.6% 13 86.7% 28 27.5 37.5
KEYWORD 915 33.6% 176 19.2% 36 5677.4 60136.8
JOURNAL 94 3.5% 42 44.7% 125 1200.3 2681.9
EXACT JOURNAL 25 0.9% 14 56.0% 853 1516.3 3341.0
SOURCE 4 0.1% 1 25.0% 162 162.0 0.0
CONFERENCE 1 0.0% 1 100% 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 2 0.1% 0 0.0% 8 8.0 0.0
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 0 0.0% 0 0.0% 0 0.0 0.0
LANGUAGE 0 0.0% 0 0.0% 0 0.0 0.0
ADDED 2 0.1% 1 50.0% 11 11.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 18 0.7% 1 5.6% 64 379.5 838.4
ACCESSION NO. 2 0.1% 2 100% 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 51 1.9% 7 13.7% 13 65.4 134.8
EXACT PE 7 0.3% 0 0.0% 3 53.9 87.5
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 72 2.6% 13 18.1% 16 239.3 1355.6
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 249 10.2% 89 35.7% 6 61.1 291.3
Single 2,203 89.8% 498 22.6% 28 2648.3 39692.9
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 2.1%
SHORT 87.6%
LONG 2.4%
TAGS 0.3%
FIELDS 2.7%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 2.7%
COMMENTS 0.0%
Other 2.1%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 12.2%
Ten most frequent errors:
1. First word of command is invalid 46.3%
2. NS command - no next screen 27.1%
3. FIND command with invalid index name 7.7%
4. Search term missing from search command 2.3%
5. DISPLAY command contains invalid word 1.9%
6. PS command - no previous screen 1.7%
7. DATE search with unrecognized word 1.2%
8. Index invalid in current database 1.1%
9. Max. # of ports to a Z39 db are in use 1.0%
10. Command contains escape or arrow key 0.8%
11. All others 8.8%
Ten most frequent EXPLAIN requests:
1. GUIDE 21.4%
2. Unrecognized term 10.7%
3. COMMANDS 8.9%
4. BIOSIS DATABASE 8.9%
5. FIND 8.9%
6. INDEXES 5.4%
7. DISPLAY 3.6%
8. DISPLAY TAGS 3.6%
9. DATABASES 3.6%
10. PASSWORDS 3.6%
11. All others 21.4%
Ten most frequent HELP situations:
1. Help requested from SET DB command 26.8%
2. FIND command with zero results 15.4%
3. First word of command is invalid 14.6%
4. FIND command with invalid index name 7.3%
5. NS command - no next screen 3.3%
6. F/BR with index invalid in current DB 3.3%
7. 15 2.4%
8. FIND command retrieves >1 book 2.4%
9. DISPLAY command-complete in one screen 2.4%
10. MAIL command entered w/o email address 2.4%
11. All others 19.5%
Ten most frequent SHOW requests:
1. HISTORY 41.2%
2. SEARCH 35.3%
3. IAC NEWS 5.9%
4. B902 5.9%
5. GLOSSARY 5.9%
6. DISPLAY 5.9%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)