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2 years ago

5

If you created a variable called name, what data type would that value be? Group of answer choices a float a string a Boolean an

integer

Computers and Technology

2 answers:

Semenov [28]2 years ago

8 0

I think its an integer

PtichkaEL [24]2 years ago

6 0

Answer:

a float

Explanation:

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Many major employers routinely monitor the performance of their employees through the computers and telephones they use. Employe

STALIN [3.7K]

Answer:

Employers are allowed to check the number of keystrokes that word processors enter during the day.

Explanation:

An employer is authorized to monitor the activity of its employee when:

The employee authorizes it.
The employer owns the system to be used.
Surveillance is necessary for a strictly professional purpose.

By analyzing the keys pressed per day, the employer can determine the performance provided by its employees, and if they use the company's resources, for non-work purposes.

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3 years ago

________ is the application of statistical techniques to find patterns and relationships among data for classification and predi

Finger [1]

Answer:

Data Mining

Explanation:

Data Mining is also called knowledge discovery.

It is a computer aided technique of searching and evaluating a bulk of data in order to obtain useful information.

This technique searches through the data to find hidden patterns and uses statistical methods to find relationship among data for finding predictive information and for classification of data.

This is a mixture of different disciplines which include machine learning, statistics and artificial intelligence and also some mathematical methods.

Often the useful information is extracted from enormous database using modeling technique which is used to build a model from instances of the data where the solution is known and later apply this model on the instances where the solution is unknown.

In unsupervised data mining, the data analysis is not done by using modeling technique. In other words the labels are provided in order not draw inferences and prediction from data sets. Example is clustering.

In supervised data mining the model is developed to make inferences and classification. Example is neural networks.
For example data mining is used in Medicine industry to provide more accurate diagnostics and treatments on the basis of patient's medical history , physical examination or different patient tests data.
Data mining also makes it possible to manage health resources more efficiently and cost-effectively by detecting risks, predicting diseases in certain sections of the population or predicting hospitalization duration.

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3 years ago

Given the following adjacency matrix, what is the approximate rank vector after one iteration of the power iteration method (use

ValentinkaMS [17]

Note: The matrix referred to in the question is: $M = \left[\begin{array}{ccc}1/2&1/3&0\\1/2&1/3&0\\0&1/3&1\end{array}\right]$

Answer:

a) [5/18, 5/18, 4/9]'

Explanation:

The adjacency matrix is $M = \left[\begin{array}{ccc}1/2&1/3&0\\1/2&1/3&0\\0&1/3&1\end{array}\right]$

To start the power iteration, let us start with an initial non zero approximation,

$X_o = \left[\begin{array}{ccc}1\\1\\1\end{array}\right]$

To get the rank vector for the first Iteration:

$X_1 = MX_0$

$X_1 = \left[\begin{array}{ccc}1/2&1/3&0\\1/2&1/3&0\\0&1/3&1\end{array}\right]\left[\begin{array}{ccc}1\\1\\1\end{array}\right] \\\\X_1 = \left[\begin{array}{ccc}5/6\\5/6\\4/3\end{array}\right]\\$

Multiplying the above matrix by 1/3

$X_1 = \left[\begin{array}{ccc}5/18\\5/18\\4/9\end{array}\right]$

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3 years ago

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3 years ago

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