Answer:
It we were asked to develop a new data compression tool, it is recommended to use Huffman coding since it is easy to implement and it is widely used.
Explanation:
The pros and the cons of Huffman coding
Huffman coding is one of the most simple compressing encoding schemes and can be implemented easily and efficiently. It also has the advantage of not being patented like other methods (e.g. arithmetic codingfor example) which however are superior to Huffman coding in terms of resulting code length.
One thing not mentioned so far shall not be kept secret however: to decode our 96 bit of “brief wit” the potential receiver of the bit sequence does need the codes for all letters! In fact he doesn’t even know which letters are encoded at all! Adding this information, which is also called the “Huffman table” might use up more space than the original uncompressed sentence!
However: for longer texts the savings outweigh the added Huffman table length. One can also agree on a Huffman table to use that isn’t optimized for the exact text to be transmitted but is good in general. In the English language for example the letters “e” and “t” occur most often while “q” and “z” make up the least part of an average text and one can agree on one Huffman table to use that on average produces a good (=short) result. Once agreed upon it doesn’t have to be transmitted with every encoded text again.
One last thing to remember is that Huffman coding is not restricted to letters and text: it can be used for just any symbols, numbers or “abstract things” that can be assigned a bit sequence to. As such Huffman coding plays an important role in other compression algorithms like JPG compression for photos and MP3 for audio files.
The pros and the cons of Lempel-Ziv-Welch
The size of files usually increases to a great extent when it includes lots of repetitive data or monochrome images. LZW compression is the best technique for reducing the size of files containing more repetitive data. LZW compression is fast and simple to apply. Since this is a lossless compression technique, none of the contents in the file are lost during or after compression. The decompression algorithm always follows the compression algorithm. LZW algorithm is efficient because it does not need to pass the string table to the decompression code. The table can be recreated as it was during compression, using the input stream as data. This avoids insertion of large string translation table with the compression data.
Answer:
MLA citations, in text and end-text, are commonly used by english students.
Answer:
Find the explanation below.
Explanation:
The six leadership styles described by Daniel Goleman are the;
1. Authoritative: This is applied when the leader wants to motivate a team to achieve greater heights. For example, in a group where the leader expects his team members to complete a project at a specific time, he comes up with an idea of how they can meet the goal. He tells the group excitedly about this idea. The group in turn now shares this same excitement and gets to work applying the new ideas.
2. Coaching: This is used by the leader to encourage employees who lack motivation. Imagine that an employee known to be efficient at his work is finding it difficult to reach a sales goal. The leader observes this and encourages him, showing him better ways to improve his sales skills. He applies the idea and gets better at his job.
3. Affiliative: The affiliative leader seeks to resolve conflict by connecting people and building their spirits. In a case where the team members are feeling downcast because their well-loved boss is transferred to another branch, the new affiliative leader builds their spirit and helps them get back to work.
4. Democratic: This is needed when the leader seeks opinions from his subordinates. If the company is seeking to make changes to be at par with a competitor, the democratic leader welcomes a variety of opinions from his subordinates on new ways to improve their products and services.
5. Pacesetting: This type of leader leads the way and shows good example. After the leader has shown the group new ways to improve their sales, he applies the same approach in his marketing and has significant results.
6. Coercive: The leader applies this with difficult employees. In a situation whereby an employee has been encouraged on how to improve his skills but he still shows no much improvement, the coercive leader authoritatively tells him to make the needed effort since his job is on line. He shows signs of improvement and the leader uses lighter measures to calm his fears.
Explanation:
The ratio of length, breadth and height of a room is 4:3:1
Let length = 4x
Breadth = 3x
Height = x
Volume of air contained in the room, V = 12 m³
We need to find the length, breadth and height of the room. The room is in the shape of a cubiod. The volume of a cuboid is given by :
V = lbh
Height of the room = 1 m
Breadth of the room = 3x = 3 m
Length of the room = 4x = 4 m
