DBOD-DS: Distance Based Outlier Detection for Data Streams

Data stream is a newly emerging data model for applications like environment monitoring, Web click stream, network traffic monitoring, etc. It consists of an infinite sequence of data points accompanied with timestamp coming from external data source. Typically data sources are located onsite and very vulnerable to external attacks and natural calamities, thus outliers are very common in the datasets. Existing techniques for outlier detection are inadequate for data streams because of its metamorphic data distribution and uncertainty. In this paper we propose an outlier detection technique, called Distance-Based Outline Detection for Data Streams (DBOD-DS) based on a novel continuously adaptive probability density function that addresses all the new issues of data streams. Extensive experiments on a real dataset for meteorology applications show the supremacy of DBOD-DS over existing techniques in terms of accuracy.

In DEXA' 2010.

Life is too Short

Have you ever seen the morning?
When the sun comes up the shore
And the silence teach the
beauty for the sound
Have you ever sat there waiting?
For the time to stand still
For all the worlds and stars
From turning around
And you run
'Cause life is too short
And you run
'Cause life is too short
Have you ever seen the glory?
When the moon is on the rise
And the dreams are close
To the ones that we love
Have you ever sat there waiting?
For heaven to give a sign
So we could find the place
Where angels come from
And you run (and you run)
'Cause life is too short
And you run (and you run)
'Cause life is too short
There's a time that turns
Turn back time
But I don't see I can
It only works
If you believe in the truth
But there's a time to live
And a time to cry
But if you're by my side
I will try to catch a star
I'll try to catch a star
Just for you
And I run
'Cause life is too short
And I run (and I run)
'Cause life is too short
And I run And I run And I run And I run And I run ...

[Scorpions]

Cologne collector

Last few days I am going throw some cologne reviews. I think this is not because I want to buy something rather it is working as an excellent escape goat for me. An interesting escape from real life. I have heard about aroma therapy long ago. However the cologne seller made me buy two new colognes. It's fun reading other people comments on different perfumes. The most interesting thing catch up my attention is the perfume is not judged by the smell rather it is judged by the number of women pay attention on it. If the cologne can drive the girls toward the wearer, then it is the best. Interesting judging criterion! Again if someone wears a cologne and nobody notices it there is no point of wearing it. At the end of the day few very people are bothered by their own body odor.

I had a fascination on fragrances, it's not entirely new. I love wearing pleasant fragrance. It just makes me refresh. I used to wear body spray but they don't last too long. Then I moved toward perfumes/cologne. It works okay. I am from south asia. Spicy food is our daily dish. Spicy food aroma drives everything away. So I have to use some kind of fragrances for daily life otherwise it is hard to stand the aroma. Polo Black is my signature cologne. You may not like it at the beginning but it is very refreshing after one or two hours. They called it "base note is very strong". I have Drakkar Noir, Armani Code and Burberry Touch now by the grace of American marketing policy.