Stability of Density-Based Clustering.
Abstract
High density clusters can be characterized by the connected components of a
level set $L(\lambda) = \{x:\ p(x)>\lambda\}$ of the underlying probability
density function $p$ generating the data, at some appropriate level
$\lambda\geq 0$. The complete hierarchical clustering can be characterized by a
cluster tree ${\cal T}= \bigcup_{\lambda} L(\lambda)$. In this paper, we study
the behavior of a density level set estimate $\widehat L(\lambda)$ and cluster
tree estimate $\widehat{\cal{T}}$ based on a kernel density estimator with
kernel bandwidth $h$. We define two notions of instability to measure the
variability of $\widehat L(\lambda)$ and $\widehat{\cal{T}}$ as a function of
$h$, and investigate the theoretical properties of these instability measures.
Вход в систему
Uggs On Sale
Сб, 11/05/2011 - 05:13 — nottoeatWelcome to our Uggs On Sale. It is a website which sells Cheap Ugg Boots, you will get the original Ugg Boots Uk and fast delivery here. All our Ugg Boots Sale are made from 100% genuine sheepskin and wool, they come from original package. Christmas is coming, we offer a promotional price right now, so enjoy cheap price and fast shipping. If you would like to buy Ugg Sale here, you will get the boots what you want. We are looking forward your order.
UGG BOOTS CLEARANCE
Втр, 11/15/2011 - 09:21 — tomydadWelcome to UGGBOOTSCLEARANCE.ORG! ugg boots clearance is an online retailer selling original cheap uggs at a discount. We operated ugg boots sale more than 5 years. Our shoes brand cheap ugg boots, famous for their comfy sheepskin boots lined with sheep fleece and an outer sheep skin dyed in every other shade and material, is finally more and more popular in world. New styles of uggs for cheap and a variety of colors are available on sale, looking forward your order!
bcvbc
Чт, 12/08/2011 - 18:25 — lupasLet's look at some of modest bridesmaid dresses with sleeves the trends bridesmaid dresses with sleeves you'll want to follow this Autumn cheap red carpet dresses and where you can find unique wedding dreses . Don't let anyone tell you that Summer and Spring are the most romantic times to get homecoming dresses 2012 under 100 married. Countless Autumn brides will tell you party dress 2012 that there really isAqua Bridesmaid Dress under 100 nothing quite like amazing cheap cocktail dresses greens, long evening dresses formal dresses and browns of AutumnGolden Strapless Cocktail Dress and the crisp Autumnal weather! Autumn is a striking and beautifullong evening dresses for weddings season, but what kind of long evening dresses 2011 cheap will go well with bridesmaid dresses with short sleeves the season 2011 Blue Taffeta Cocktail Dress , elegant evening dresses australia ?
............
Where to buy cheap cocktail dresses ? or looking for cheap wedding dresses under 100Why not buy beach wedding dresses,beach wedding gowns,strapless wedding dresses?