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Anna71 [15]
3 years ago
14

Byte pair encoding is a data encoding technique. The encoding algorithm looks for pairs of characters that appear in the string

more than once and replaces each instance of that pair with a corresponding character that does not appear in the string. The algorithm saves a list containing the mapping of character pairs to their corresponding replacement characters.
For example, the string "THIS_IS_THE_BEST_WISH" can be encoded as "%#_#_%E_BEST_W#H" by replacing all instances of "TH" with "%" and replacing all instances of "IS" with "#".
Which of the following statements about byte pair encoding is true?
A. Byte pair encoding is an example of a lossy transformation because it discards some of the data in the original string.
B. Byte pair encoding is an example of a lossy transformation because some pairs of characters are replaced by a single character.
C. Byte pair encoding is an example of a lossless transformation because an encoded string can be restored to its original version.
D. Byte pair encoding is an example of a lossless transformation because it can be used to transmit messages securely.
Computers and Technology
1 answer:
erica [24]3 years ago
8 0

Answer:

C. Byte pair encoding is an example of a lossless transformation because an encoded string can be restored to its original version.

Explanation:

Byte pair encoding is a form of encoding in which the most common pairs of consecutive bytes of data are replaced by a single byte which does not occur within the set of data.

For example, if we has a string ZZaaAb, it can be encoded if the pairs of string ZZ are replaced by X and the second pair by Y. So, our data now becomes XYAb.

To get our original data, that is decode it, we just replace the data with the keys X = ZZ and Y = aa thus allowing our original data to be restored.

Since our original string is restored without loss of data, it implies that <u>byte pair encoding is an example of a lossless transformation because an encoded string can be restored to its original version.</u>

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lbvjy [14]

To use the index method to  find out the position of "x" in "supercalifragilisticexpialidocious", you would execute the following code:

word = "supercalifragilisticexpialidocious"

print(word.index("x"))

<h3>How to use the index method in Python?</h3>

This is used to return the first position of the occurrence of a specific value and if the value is not found, an exception is raised.

Therefore, to write in python, you would write out the syntax of the word, and then add the print command with the index of the word you want to find as listed above.

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4 0
2 years ago
. The first step in devising security services and mechanisms is to develop a security policy True False
Evgen [1.6K]

Answer: True

Explanation: For the creation of the security services and function the first step is having a policy regarding the security measure that is to be taken.Security policy consist of the procedures and function that should be implement in the system as a plan.

It monitors the flow,accessing of external component ,data assessment etc fro the protection.After the policies are made then the implementation take place. The most common deployment of this policy is in information technology(IT)sector .Thus, the given statement is true..

5 0
3 years ago
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densk [106]

Answer:

Slide Layout contains the formatting and placeholders for all items that appear on a slide.

Explanation:

Slide Layout:

Slide layout option in MS PowerPoint contains formatting, placeholders boxes and positioning for all the content that you put on a slide.

Slide layout option allows you to format the contents, insert placeholders boxes for contents such as text or images and do their positioning as you want to appear on a slide. Placeholders are the dotted line containers that hold the content such as title, body text, tables, smart art graphics, charts, pictures, videos, clip art, and sounds.

Slide layout also contains the fonts, effects, colors, and the background (all these collectively known as the theme) of a slide.

However, PowerPoint includes a built-in slide layout, and you can modify these layout on your slide according to your specific needs. Furthermore, you can share your customized slide layout with other people who want to create a PowerPoint presentation.

In addition to, you can built-in standard slide layout in PowerPoint in the Slide-Master View.

If you created the slide, and you want to customize that slide according to specific requirement then you have the option to apply the built-in standard layout on that slide to save the time. Because it is a much easy and time-saving task instead of customizing your own slide from scratch such as making aligning and positioning the contents on the slide

6 0
3 years ago
The role of Operating system<br><br>​
Fudgin [204]

the role of an os or operating system is the program that executes everything and makes the computer usable hope this helps

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3 years ago
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Nina [5.8K]

Answer:

The correct option is (b) multiprogramming systems

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8 0
2 years ago
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