Decompression software in the transfer of information: Difference between revisions

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== Evaluation of lossy compression ==
Decompression software is used to decompress data that has been compressed in order to reduce its size or improve its transmission or storage. The use of decompression software can have several benefits in the transfer of information:


* Significant reduction of file size –> important for file storage, transfer of data over the internet
# Improved transmission speeds: Decompressing data can improve the speed at which it is transmitted, as it reduces the amount of data that needs to be transmitted. This can be particularly important for large files or data sets that may take a long time to transmit in their uncompressed form.
* E.g. image files can be reduced to be around 90% smaller before quality degradation is noticeable
# Reduced storage requirements: Decompressing data can also reduce the amount of storage space required to store the data, which can be beneficial for both the sender and the receiver of the data.
* Most important use is streaming multimedia files and VoIP –> bandwidth is usually limited
# Reduced costs: Reducing the amount of data that needs to be transmitted or stored can also help to reduce costs, such as the costs of bandwidth or storage.
* However, doesn’t work with all file types –> text files or binary data cannot be compressed in a lossy way, as the meaning of the data are lost
# Improved compatibility: Decompressing data can also improve compatibility with different systems or applications, as it allows the data to be accessed and used in its original form.
* Different things to consider:
# However, it is important to note that decompression software may also have some limitations or drawbacks, such as the need for additional processing power and the potential for security vulnerabilities if the decompression software is not properly secured.
** Compression speed
** Decompression speed
** Compression ratio
 
 
== Evaluation of lossless Compression ==
 
* When compressing a file if decompressed will have the same data/Information as the initial file
* Important when compressing an installation file and programs
* It is required that the installation files and programs’ information is the same in the compressing and decompressing phase
* No loss in quality in lossless compression in Images and Audio files
* Larger file sizes than lossy compressions


In summary, the use of decompression software can improve transmission speeds, reduce storage requirements, reduce costs, and improve compatibility in the transfer of information, but it may also have some limitations and potential drawbacks.


== Do you understand this? ==
== Do you understand this? ==

Latest revision as of 18:23, 11 January 2023

Web Science[1]

Decompression software is used to decompress data that has been compressed in order to reduce its size or improve its transmission or storage. The use of decompression software can have several benefits in the transfer of information:

  1. Improved transmission speeds: Decompressing data can improve the speed at which it is transmitted, as it reduces the amount of data that needs to be transmitted. This can be particularly important for large files or data sets that may take a long time to transmit in their uncompressed form.
  2. Reduced storage requirements: Decompressing data can also reduce the amount of storage space required to store the data, which can be beneficial for both the sender and the receiver of the data.
  3. Reduced costs: Reducing the amount of data that needs to be transmitted or stored can also help to reduce costs, such as the costs of bandwidth or storage.
  4. Improved compatibility: Decompressing data can also improve compatibility with different systems or applications, as it allows the data to be accessed and used in its original form.
  5. However, it is important to note that decompression software may also have some limitations or drawbacks, such as the need for additional processing power and the potential for security vulnerabilities if the decompression software is not properly secured.

In summary, the use of decompression software can improve transmission speeds, reduce storage requirements, reduce costs, and improve compatibility in the transfer of information, but it may also have some limitations and potential drawbacks.

Do you understand this?[edit]

From the IB: Students can test different compression methods to evaluate their effectiveness.

Standards[edit]

These standards are used from the IB Computer Science Subject Guide[2]

  • Evaluate the use of decompression software in the transfer of information.

References[edit]

  1. http://www.flaticon.com/
  2. IB Diploma Programme Computer science guide (first examinations 2014). Cardiff, Wales, United Kingdom: International Baccalaureate Organization. January 2012.