Answer:To simplify the discussion, we will only consider two-class classifiers in this section and define a linear classifier as a two-class classifier that decides class membership by comparing a linear combination of the features to a threshold.
Figure 14.8: There are an infinite number of hyperplanes that separate two linearly separable classes.
\includegraphics[width=6cm]{vclassline.eps}
In two dimensions, a linear classifier is a line. Five examples are shown in Figure 14.8 . These lines have the functional form $w_1x_1+w_2x_2=b$. The classification rule of a linear classifier is to assign a document to $c$ if $w_1x_1+w_2x_2>b$ and to $\overline{c}$ if $w_1x_1+w_2x_2\leq b$. Here, $(x_1, x_2)^{T}$ is the two-dimensional vector representation of the document and $(w_1, w_2)^{T}$ is the parameter vector that defines (together with $b$) the decision boundary. An alternative geometric interpretation of a linear classifier is provided in Figure 15.7 (page [*]).
We can generalize this 2D linear classifier to higher dimensions by defining a hyperplane as we did in Equation 140, repeated here as Equation 144:
\begin{displaymath}
\vec{w}^{T}\vec{x} = b
\end{displaymath} (144)
The assignment criterion then is: assign to $c$ if $\vec{w}^{T}\vec{x} > b$ and to $\overline{c}$ if $\vec{w}^{T}\vec{x} \leq b$. We call a hyperplane that we use as a linear classifier a decision hyperplane .
Figure 14.9: Linear classification algorithm.
\begin{figure}\begin{algorithm}{ApplyLinearClassifier}{\vec{w},b,\vec{x}}
score ...
...in{IF}{score>b}
\RETURN{1}
\ELSE
\RETURN{0}
\end{IF}\end{algorithm}
\end{figure}
The corresponding algorithm for linear classification in $M$ dimensions is shown in Figure 14.9 . Linear classification at first seems trivial given the simplicity of this algorithm. However, the difficulty is in training the linear classifier, that is, in determining the parameters $\vec{w}$ and $b$ based on the training set.
Explanation:
Answer:
waxing crescent: first quarter waning gibbous: third quarter
Explanation:
The moon is waxing (getting larger) in the first quarter after the new moon. It is waning (getting smaller) in the third quarter, after the full moon at the end of the second quarter.
The shape of the moon is a "crescent" when it is less than a semicircle. It is "gibbous" when it is more than a semicircle. As it waxes, the crescent grows until the moon is half-full at the end of the first quarter, then it is a waxing gibbous moon through the second quarter until it is full at the end of the quarter. Following the full moon, it is waning gibbous until it becomes half-full again at the end of the third quarter. Finally, it is a waning crescent through the fourth quarter until the new moon.
waxing crescent: first quarter waning gibbous: third quarter
The answer is : Weighted application blanks
Job board is a type of system in which the employers set up a list of requirements for the job hunter
Weighted Application blanks is used to to collect background information from the job applicants, which is not a part of job board
Answer:
Answer:
the logo of the company or corporation
Explanation:
Usually, the symbol that determines who owns the intellectual property is the logo of the company or corporation. The logo of a website is technically the logo of the brand which has the rights to all of the information represented on the site and ultimately the intellectual property of the site itself. Since there are various board members that usually make up the company that owns the intellectual property, the logo is a way of representing all of these members as a single entity.
