MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 02/24/01 through 03/02/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 186 352 538
Davis 164 6 170
Irvine 50 0 50
Los Angeles 20 33 53
Riverside 13 33 46
San Diego 32 57 89
San Francisco 49 0 49
Santa Barbara 15 23 38
Santa Cruz 22 52 74
Lawrence Berkeley 0 7 7
Lawrence Livermore 0 23 23
Los Alamos 0 0 0
Other - UC 0 27 27
Other-Network UC n/a 465 465
_______ ______ _____
551 1,078 1,629
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 1,455 4,443 46,226
BIO88 174 376 2,994
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 21 86 859
2-4 a.m. 3 10 43
4-6 a.m. 10 33 1,526
6-8 a.m. 43 149 2,648
8-10 a.m. 178 431 3,332
10-12 a.m. 303 839 10,621
12-2 p.m. 276 803 7,814
2-4 p.m. 327 1,066 9,174
4-6 p.m. 282 791 6,648
6-8 p.m. 98 272 2,146
8-10 p.m. 59 229 3,060
10-12 p.m. 29 110 1,349
__________ __________ __________ _________________
Total: 1,629 4,819 49,220
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 567 1,071 1,638
Davis 602 12 614
Irvine 188 0 188
Los Angeles 33 104 137
Riverside 40 111 151
San Diego 77 233 310
San Francisco 133 0 133
Santa Barbara 150 60 210
Santa Cruz 65 185 250
Lawrence Berkeley 0 11 11
Lawrence Livermore 0 67 67
Los Alamos 0 0 0
Other - UC 0 77 77
Other-Network UC n/a 1,033 1,033
_______ ______ _____
1,855 2,964 4,819
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 6,591 11,054 17,645
Davis 8,158 82 8,240
Irvine 2,413 0 2,413
Los Angeles 171 995 1,166
Riverside 510 810 1,320
San Diego 174 1,744 1,918
San Francisco 1,250 0 1,250
Santa Barbara 888 464 1,352
Santa Cruz 206 1,791 1,997
Lawrence Berkeley 0 14 14
Lawrence Livermore 0 1,294 1,294
Los Alamos 0 0 0
Other - UC 0 1,777 1,777
Other-Network UC n/a 8,834 8,834
_______ ______ _____
20,361 28,859 49,220
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 6.7
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) 7:24
Average session length (minutes:seconds) 12:04
Longest session recorded (minutes:seconds) 332:42
Average number of searches completed per session 2.9
Retrievals per search - median 9.0
Retrievals per search - average 1363.3
Retrievals per search - standard deviation 11036
Percent of searches completed with 0 results 24.0%
Percent of searches entered that are long 1.7%
Percent of long searches completed
(includes partial results) 62.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 4,279 29.9%
DISPLAY (excluding automatic displays) 5,450 38.1%
BROWSE 3 0.0%
HELP 298 2.1%
EXPLAIN 301 2.1%
SET/RESET 742 5.2%
SHOW 45 0.3%
ADD ON (AND, OR, AND NOT) 540 3.8%
LOGON or LOGOFF 1,898 13.3%
COMMENT 0 0.0%
SAVE 240 1.7%
USE 3 0.0%
OTHER 498 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 1,641 35.0% 324 19.7% 23 134.9 436.0
TITLE WORD 760 16.2% 309 40.7% 8 1444.5 10720.4
EXACT TITLE 36 0.8% 20 55.6% 3 45.9 156.7
KEYWORD 1,665 35.5% 302 18.1% 32 2686.2 15672.9
JOURNAL 204 4.3% 98 48.0% 465 11340.1 35556.5
EXACT JOURNAL 60 1.3% 20 33.3% 1,034 2383.9 3435.1
SOURCE 7 0.1% 6 85.7% 2 2.0 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 1 0.0% 1 100% 0 0.0 0.0
PUBLICATION TYPE 2 0.0% 1 50.0% 5 5.0 0.0
DATE 15 0.3% 2 13.3% 5 13.2 25.1
LANGUAGE 2 0.0% 0 0.0% 109 109.0 43.8
ADDED 2 0.0% 1 50.0% 18 18.0 0.0
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 6 0.1% 2 33.3% 11 22.8 31.2
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 134 2.9% 27 20.1% 5 152.8 1233.5
EXACT PE 40 0.9% 4 10.0% 3 38.9 202.4
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 114 2.4% 26 22.8% 8 7347.3 28904.7
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 413 9.7% 150 36.3% 5 1015.4 12841.0
Single 3,829 90.3% 836 21.8% 31 1977.6 13225.5
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 3 100% 0 0.0% 1 2.7 2.9
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.9%
SHORT 86.1%
LONG 1.3%
TAGS 0.8%
FIELDS 2.5%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 4.0%
COMMENTS 0.0%
Other 1.4%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 11.4%
Ten most frequent errors:
1. First word of command is invalid 32.0%
2. NS command - no next screen 26.8%
3. FIND command with invalid index name 12.3%
4. PS command - no previous screen 5.6%
5. DISPLAY command contains invalid word 3.5%
6. Search term missing from search command 2.5%
7. Valid command at an inappropriate time 2.0%
8. NS of SHOW/EXP command-no next screen 1.5%
9. DATE search with unrecognized word 1.4%
10. DISPLAY command-record numbers too large 1.1%
11. All others 11.2%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 27.2%
2. GUIDE 15.9%
3. COMMANDS 8.0%
4. Unrecognized term 8.0%
5. FIND 6.6%
6. FIND LOCATION 5.3%
7. INDEXES 5.0%
8. DISPLAY 4.0%
9. BIOSIS DATABASE 3.3%
10. ADDON SEARCH 2.7%
11. All others 14.0%
Ten most frequent HELP situations:
1. Help requested from SET DB command 21.9%
2. DISPLAY command-first of >1 screen 14.7%
3. First word of command is invalid 13.0%
4. FIND command with invalid index name 9.0%
5. DISPLAY command - middle of >1 screen 5.7%
6. DISPLAY command-complete in one screen 4.3%
7. NS command - no next screen 4.0%
8. FIND command with zero results 4.0%
9. FIND command retrieves >1 book 3.3%
10. F/BR with index invalid in current DB 2.7%
11. All others 17.4%
Ten most frequent SHOW requests:
1. HISTORY 47.7%
2. SEARCH 34.1%
3. GLOSSARY 9.1%
4. BIOSIS NEWS 4.5%
5. PUBLICATION TYPES 2.3%
6. SYSTEM NEWS 2.3%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)