MELVYL BIOSIS DATABASES TELNET STATISTICS
Time period: 02/03/01 through 02/09/01
1.0 SUMMARY STATISTICS
_______________________
1.1 Total sessions:
____________________
Zero results may indicate no access to the database
Location Library Remote Total
________ _______ ______ _____
Berkeley 265 356 621
Davis 259 3 262
Irvine 27 0 27
Los Angeles 14 40 54
Riverside 17 30 47
San Diego 36 55 91
San Francisco 47 0 47
Santa Barbara 12 23 35
Santa Cruz 12 77 89
Lawrence Berkeley 0 18 18
Lawrence Livermore 0 8 8
Los Alamos 0 0 0
Other - UC 0 23 23
Other-Network UC n/a 514 514
_______ ______ _____
689 1,147 1,836
Relative use of BIOSIS databases:
Number of Number of Number of
Sessions FIND commands Records Displayed
_________ _____________ _________________
BIOSIS 1,647 4,967 50,010
BIO88 189 520 6,439
Per hour usage:
Time Sessions Finds Records Displayed
__________ __________ __________ _________________
12-2 a.m. 4 20 144
2-4 a.m. 1 2 33
4-6 a.m. 12 42 420
6-8 a.m. 53 137 1,490
8-10 a.m. 213 529 4,335
10-12 a.m. 335 948 10,358
12-2 p.m. 287 835 10,372
2-4 p.m. 367 1,134 10,256
4-6 p.m. 301 1,027 8,038
6-8 p.m. 137 442 4,677
8-10 p.m. 85 264 5,007
10-12 p.m. 41 107 1,319
__________ __________ __________ _________________
Total: 1,836 5,487 56,449
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 928 1,122 2,050
Davis 834 4 838
Irvine 99 0 99
Los Angeles 60 136 196
Riverside 43 68 111
San Diego 118 153 271
San Francisco 143 0 143
Santa Barbara 77 53 130
Santa Cruz 29 475 504
Lawrence Berkeley 0 32 32
Lawrence Livermore 0 56 56
Los Alamos 0 0 0
Other - UC 1 42 43
Other-Network UC n/a 1,014 1,014
_______ ______ _____
2,332 3,155 5,487
1.3 Records displayed
______________________
Zero results may indicate no access to the database
Number of Records Displayed by location:
Location Library Remote Total
________ _______ ______ _____
Berkeley 13,193 12,454 25,647
Davis 6,440 30 6,470
Irvine 1,150 0 1,150
Los Angeles 546 1,160 1,706
Riverside 329 737 1,066
San Diego 554 1,704 2,258
San Francisco 1,103 0 1,103
Santa Barbara 518 722 1,240
Santa Cruz 229 2,029 2,258
Lawrence Berkeley 0 147 147
Lawrence Livermore 0 4,339 4,339
Los Alamos 0 0 0
Other - UC 0 347 347
Other-Network UC n/a 8,718 8,718
_______ ______ _____
24,062 32,387 56,449
1.4 Response time
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Search response time from receipt of command at
DLA until transmission of response:
Average in seconds 0.9
Standard deviation in seconds 4.0
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) 8:20
Average session length (minutes:seconds) 12:34
Longest session recorded (minutes:seconds) 251:16
Average number of searches completed per session 3.0
Retrievals per search - median 8.0
Retrievals per search - average 1025.3
Retrievals per search - standard deviation 12385
Percent of searches completed with 0 results 23.7%
Percent of searches entered that are long 1.5%
Percent of long searches completed
(includes partial results) 60.5%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
FIND 4,860 29.7%
DISPLAY (excluding automatic displays) 6,174 37.8%
BROWSE 1 0.0%
HELP 345 2.1%
EXPLAIN 356 2.2%
SET/RESET 827 5.1%
SHOW 57 0.3%
ADD ON (AND, OR, AND NOT) 627 3.8%
LOGON or LOGOFF 2,125 13.0%
COMMENT 0 0.0%
SAVE 436 2.7%
USE 2 0.0%
OTHER 545 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 1,938 36.4% 418 21.6% 20 144.4 519.4
TITLE WORD 874 16.4% 337 38.6% 9 914.4 8865.2
EXACT TITLE 32 0.6% 20 62.5% 11 164.2 373.1
KEYWORD 1,709 32.1% 296 17.3% 31 1897.2 19927.4
JOURNAL 228 4.3% 98 43.0% 711 3603.5 7596.7
EXACT JOURNAL 135 2.5% 37 27.4% 839 1505.2 2290.9
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 5 0.1% 0 0.0% 79,706 78580.4 29804.7
PUBLICATION TYPE 0 0.0% 0 0.0% 0 0.0 0.0
DATE 9 0.2% 1 11.1% 11 15.1 11.2
LANGUAGE 1 0.0% 0 0.0% 1 1.0 0.0
ADDED 2 0.0% 0 0.0% 7 7.0 7.1
ARTICLE 0 0.0% 0 0.0% 0 0.0 0.0
AUTHOR AFFIL. 9 0.2% 4 44.4% 7 67.0 109.3
ACCESSION NO. 0 0.0% 0 0.0% 0 0.0 0.0
ISSN 1 0.0% 1 100% 0 0.0 0.0
ISBN 0 0.0% 0 0.0% 0 0.0 0.0
PERIODICAL 190 3.6% 49 25.8% 4 231.5 1492.3
EXACT PE 65 1.2% 14 21.5% 3 54.5 237.2
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 122 2.3% 26 21.3% 31 11074.9 43235.4
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 488 10.1% 170 34.8% 4 304.8 4976.4
Single 4,327 89.9% 955 22.1% 29 1573.9 15583.8
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 1 100% 1 100% 0.0 0.0 0.0
DISPLAY commands, by type, excluding automatic displays:
REVIEW 3.4%
SHORT 85.3%
LONG 1.4%
TAGS 0.3%
FIELDS 2.2%
BROWSE REVIEW 0.0%
BROWSE SHORT 0.0%
BROWSE LONG 0.0%
PERIODICALS 5.5%
COMMENTS 0.0%
Other 1.9%
2.2 Error, EXPLAIN and HELP statistics
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Percent of commands that contained errors 11.2%
Ten most frequent errors:
1. First word of command is invalid 31.7%
2. NS command - no next screen 26.0%
3. FIND command with invalid index name 14.1%
4. PS command - no previous screen 6.1%
5. Search term missing from search command 3.2%
6. DISPLAY command contains invalid word 3.0%
7. Valid command at an inappropriate time 2.5%
8. NS of SHOW/EXP command-no next screen 1.6%
9. Index invalid in current database 0.9%
10. Max. # of ports to a Z39 db are in use 0.9%
11. All others 10.0%
Ten most frequent EXPLAIN requests:
1. LOCATE (BIO DB) 30.1%
2. GUIDE 20.2%
3. FIND 8.4%
4. Unrecognized term 6.7%
5. COMMANDS 5.3%
6. INDEXES 4.8%
7. DISPLAY 3.9%
8. B321 2.8%
9. ADDON SEARCH 2.2%
10. BIOSIS DATABASE 1.4%
11. All others 14.0%
Ten most frequent HELP situations:
1. Help requested from SET DB command 16.0%
2. First word of command is invalid 14.3%
3. FIND command with invalid index name 12.1%
4. DISPLAY command-first of >1 screen 11.8%
5. DISPLAY command - middle of >1 screen 8.8%
6. DISPLAY command - last of >1 screen 5.1%
7. PS command - no previous screen 4.3%
8. DISPLAY command-complete in one screen 4.3%
9. FIND command retrieves >1 book 3.4%
10. FIND command with zero results 3.3%
11. All others 16.5%
Ten most frequent SHOW requests:
1. HISTORY 67.3%
2. SEARCH 28.6%
3. BIOSIS NEWS 4.1%
11. All others 0.0%
BIOmm/dd bio MELVYL BIOSIS DATABASES TELNET STATISTICS (weekly)