Using Data Mining to Handle Missing Data in Multi-Hop Sensor Network Applications

A sensor’s data loss or corruption, aka sensor data missing, is a common phenomenon in modern wireless sensor networks. It is more severe for multi-hop sensor network (MSN) applications where sensor data reach the base station via other sensors; hence a sensor’s failure can cause multiple missing data. In this paper we present MASTER-M, a data estimation framework based on data clustering and association rule mining to estimate the values of missing sensor data for MSN. Estimating, instead of resending, the missing sensor data is becoming popular as it may reduce query response time and sensor energy consumption; however the current works cater to only single-hop sensor networks. To fill this gap, our novel technique addresses the issues related to MSN, such as simultaneous missing sensors and missing spatially correlated sensors. It consists of three steps: 1) clustering sensors online; 2) capturing association rules between sensors inside each cluster, and 3) estimating the values of the missing data using the obtained association rules. Experimental results on both real-life sensor data and synthetic sensor data demonstrate the efficacy of MASTER-M in terms of estimation accuracy compared to the existing techniques. Moreover, we also present experiments showing the supremacy of data estimation by MASTER-M in terms of energy savings over re-transmission of missing data.

In MobiDE' 2010.

Microsoft Equation Tool

"Wow! Microsoft provide a new equation writer tool with Word 2007. I am gonna write my next article with it." - Don't be stupid like me. Trust me my friends it sucks more than the previous one. If you have to write one or two small expression, then it might be okay (not very sure :() but if you have to write plenty of mathematical expression you will be damned! You cannot imagine how slow it is, It sucks big time! The whole equation tool is a piece of crap, it's evil. Never ever try to use that. I don't know why my advisor loves MS word :(, this product should be banned officially.

Where do I go from here?

Groceries are gone, my pay cheque is spent
They turned off the water, I'm behind on my rent
Last night I drunk my last beer
And where do I go from here?

I've been laid off since Monday before
The union is holding out hoping for more
Well, I could be laid off for years
And where do I go from here, where do I go from here?

Sittin' at the kitchen table
Staring at my unpaid bills
Sometimes I feel so unable
It's the boredom not the worry that kills.

Oh, where do I go from here.
Where do you go when nobody needs you
Why can't you sleep when there's nothin' else to do
Why are your thoughts so unclear
Oh, where do you go from here
Where do you go, where do you go from here.

I don't like complaining and I could use a rest
but my sofa and chairs just got repossessed
and my pride is the next thing I fear
Oh where do I go from here, where do I go?

Where do I go from here
Tell me where do I go, where can I go
Where can I go from here?

[Don Williams]

sanity???

What is sanity? Doing things that other people want me to do or maybe doing something from a set that other people believe right for me. What if I lost my sanity? I would do whatever I feel like doing! I better loose my sanity; probably this is the only way I can have my cherished life.

if people don't think you're weird, you're living badly

- Paul Graham

break! break!! break!!!

A had paper due early morning today. It went well and after the submission "she" said I can take a break today! I don't know for some reason it made me laugh. What is a break? What does it mean having a day off? Break! break! break! I want a break, I want a break, I want a break. Day-by-day I am losing my sanity. Everyday I am hope everything going to be good but at the end of the day I am figuring out it is not. It's my life.

I used to tell people I am a loner but in early days of America I realized I am not. It's not easy to be alone, it's not fun to be lonely. Those days I crave for a human being. I don't know why now I feel whose days were good days of my life. I am not sociable person at all, no matter what I can't be sociable. Every things seems boring to me, every things seems useless to me. Every person seems irritating to me. I am going insane!

Couple of days back rassel send me a link, I can't exacly remember the title but it was about need and greed. I don't know why he sent me that but I know I am greedy, I posses a eternal hunger of countless small things. I am not a good man at all. I had all the virtues when I was a kid and I lost one by one in course of my little dumb life. I don't have anything now, I am empty now.

While writing this post I went to the wiki page of seven deadly sin to see what is the rank of the greed on the list. Interestingly it seems like I have six of them except gluttony! Maybe I have the gluttony too, I am not sure. I am a stupid whore. I need a major re-work. I want to go back to my mom, I need to go back to her!