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Research Papers on Semantic Web

By admin on Dec 11, 2007 in side note

Currently reading research papers

http://simile.mit.edu/exhibited-wiki/Haystack

http://www.cs.cmu.edu/
~jasonh/publications/
CHI2006-wip-marmite-submitted.pdf

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Short Note

Reading a large file

Reference

Java 1000 tips ebook free download

Download Here

- >>

Visual Paradigm for UML Community Edition is a UML modeling platform. The community edition is quite useful but lacking a lot of features which are only available in the Enterprise edition.

- >>

ORA-14402: updating partition key column would cause a partition change

Solution: Run

alter table <table name>
enable row movement

Reference

Locking or Unlocking Statistics
Use the following procedures to lock and unlock statistics on objects.

LOCK_SCHEMA_STATS Procedure
LOCK_TABLE_STATS Procedure

UNLOCK_SCHEMA_STATS Procedure
UNLOCK_TABLE_STATS Procedure

Reference

In Oracle 10g the DBMS_JOB package is replaced by the DBMS_SCHEDULER package. The DBMS_JOB package is now deprecated and in Oracle 10g it's only provided for backward compatibility. From Oracle 10g the DBMS_JOB package should not be used any more, because is could not exist in a future version of Oracle.

With DBMS_SCHEDULER Oracle procedures and functions can be executed. Also binary and shell-scripts can be scheduled.

Reference

Estimate table row and index size

/* TABLE */

select
3 + avg(nvl(dbms_lob.getlength(CASE_DATA),0)+1 +
nvl(vsize(CASE_NUMBER ),0)+1 +
nvl(vsize(CASE_DATA_NAME),0)+1 +
nvl(vsize(LASTMOD_TIME_T),0)+1
) "Total bytes per row"
from
arch_case_data
where
case_number = 301;

Total bytes per row
--------------------
3424

/* INDEX */

select sum(COLUMN_LENGTH)
from dba_ind_columns
where TABLE_NAME = 'ARCH_CASE_DATA';

SUM(COLUMN_LENGTH)
------------------------
22

- >>

Console is an enhancement of the normal Windows console. Try it and you will like it !!

- >>

Foxit Reader is a good alternative for Acrobat Reader.

- >>

Vixta is another Linux O/S based on Fedora. It can be run from CD, similiar to Ubuntu.

- >>

IBM Lotus Symphony is a office suite which is currently in beta and available free for download. It consists of

Documents
Presentations
Spreadsheets

For those who are using OpenOffice, you can now have another alternative.

- >>

FreeMind is a great free mind mapping software..

- >>

Some side note on some Unix commands. List will grow over time...

<esc>:g/^$/d

This means that all the lines that just have a carriage return on them (NO Spaces), will be removed.

Ok, so I have some of those lines too. How can I remove all of them as well?

<esc>:g/^ *$/d

NOTE: There is a space after the '^' and before the '*'.

sed

Remove HTML tags

sed -e :a -e 's/<[^>]*>//g;
/</N;//ba'

Get number of opened sockets

 (( socketsopen=`
netstat -an|wc -l` -
`netstat -an |
grep -n "Active UNIX domain sockets
"|cut -d: -f1` - 2 ));
echo $socketsopen

for HP-UX, find process by port number

# lsof -i tcp:161
# lsof -i udp:161

Download from
http://gatekeep.cs.utah.edu/
hppd/hpux/Sysadmin/lsof-4.64/

ps showing memory info

UNIX95=1 ps -ef -o pid,sz,vsz,comm
ps -elf|awk '{print $10, $3, $4, $15, 16}'|sort -nr|more

vi references

Editing

A Append to end of current line
i Insert before cursor
I Insert at beginning of line
o Open line above cursor
O Open line below cursor
ESC End of insert mode
Ctrl-I Insert a tab
Ctrl-T Move to next tab position
Backspace Move back one character
Ctrl-U Delete current line
Ctrl-V Quote next character
Ctrl-W Move back one word
cw Change word
cc Change line
C Change from current position to end of line
dd Delete current line
ndd Delete n lines
D Delete remainer of line
dw Delete word
d} Delete rest of paragraph
d^ Delete back to start of line
c/pat Delete up to first occurance of pattern
dn Delete up to next occurance of pattern
Delete up to and including a on current line
dta Delete up to, but not including, a on current line
dL Delete up to last line on screen
dG Delete to end of file
J Join two lines
p Insert buffer after cursor
P Insert buffer before cursor
rx Replace character with x
Rtext Replace text beginning at cursor
s Substitute character
ns Substitute n characters
S Substitute entire line
u Undo last change
U Restore current line
x Delete current cursor position
X Delete back one character
nX Delete previous n characters
. Repeat last change
~ Reverse case
y Copy current line to new buffer
yy Copy current line
"xyy Copy current line into buffer x
"Xd Delete and append into buffer x
"xp Put contents of buffer x
y]] Copy up to next section heading
ye Copy to end of word

Cursor

h Left
j Down
k Up
l (or spacebar) Right
w Forward one word
b Back one word
e End of word
( Beginning of current sentence
) Beginning of next sentence
{ Beginning of current paragraph
} Beginning of next paragraph
[[ Beginning of current section
]] Beginning of next section
0 Start of current line
$ End of current line
^ First non-white character of current line
+ or RETURN First character of next line
- First character of previous line
n | character n of current line
H Top line of current screen
M Middle line of current screen
L Last line of current screen
nH n lines after top line of current screen
nL n lines before last line of current screen
Ctrl-F Forward one screen
Ctrl-B Back one screen
Ctrl-D Down half a screen
Ctrl-U Up half a screen
Ctrl-E Display another line at bottom of screen
Ctrl-Y Display another line at top of screen
z RETURN Redraw screen with cursor at top
z . Redraw screen with cursor in middle
z - Redraw screen with cursor at bottom
Ctrl-L Redraw screen without re-positioning
Ctrl-R Redraw screen without re-positioning
/text Search for text (forwards) dfa
/ Repeat forward search
?text Search for text (backwards)
? Repeat previous search backwards
n Repeat previous search
N Repeat previous search, but it opposite direction
/text/+n Go to line n after text
?text?-n Go to line n before text
% Find match of current parenthesis, brace, or bracket.
Ctrl-G Display line number of cursor
nG Move cursor to line number n
:n Move cursor to line number n
G Move to last line in file

File Handling

:w Write file
:w! Write file (ignoring warnings)
:w! file Overwrite file (ignoring warnings)
:wq Write file and quit
:q Quit
:q! Quit (even if changes not saved)
:w file Write file as file, leaving original untouched
ZZ Quit, only writing file if changed
:x Quit, only writing file if changed
:n1,n2w file Write lines n1 to n2 to file
:n1,n2w >> file Append lines n1 to n2 to file
:e file2 Edit file2 (current file becomes alternate file)
:e! Reload file from disk (revert to previous saved version)
:e# Edit alternate file
% Display current filename
# Display alternate filename
:n Edit next file
:n! Edit next file (ignoring warnings)
:n files Specify new list of files
:r file Insert file after cursor
:r !command Run command, and insert output after current line

- >>

JavaANPR is an automatic number plate recognition software, which implements algorithmic and mathematical principles from field of artificial intelligence, machine vision and neural networks.

I tested it to recognize normal numbers in JPG, GIF or PNG. It works quite accurately.

- >>

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