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1. For sparse data, discuss why considering only the presence of non-zero values might give a more accurate view of the objects than considering the actual magnitudes of values. When would such an approach not be desirable?
2. Describe the change in the time complexity of K-means as the number of clusters to be found increases.
3. Discuss the advantages and disadvantages of treating clustering as an optimization problem. Among other factors, consider efficiency, non-determinism, and whether an optimization-based approach captures all types of clusterings that are of interest.
4. What is the time and space complexity of fuzzy c-means? Of SOM? How do these complexities compare to those of K-means?
5. Explain the difference between likelihood and probability.
Give an example of a set of clusters in which merging based on the closeness of clusters leads to a more natural set of clusters than merging based on the strength of connection (interconnectedness) of clusters.
Given pre-order and in-order traversals of a binary tree, is it possible to reconstruct the tree? If so, sketch an algorithm to do it. If not, give a counterexample. Repeat the problem if you are given the pre-order and post-order traversals.
Case 2-3 Michael wants to create a Website based on his famous cooking show. He would like to provide instructions on how to create some of his favorite dishes. He would like his recipes to be displayed in very simple, step by step pages. Which st..
Describe at least three different ways that programs within that system access, store, and manage data. Please include at least one example of a program.
There are pros and cons to both clean installs and upgrades. Most seem to revolve around the Windows operating system. What about other operating systems
Android provides the Dalvik Virtual Machine, which allows native Android apps to be developed using a combination of Java and the Android API. Apple's iOS does not provide a Java Virtual Machine;
You have been called in to consult for a company that is running fifteen Windows 10 computers, two Linux computers, and three Mac OS X computers.
Why do organizations perform thorough level of testing before adopting a new system? What are the examples of steps to be taken during a proper testing
What is your opinion as to the best approach to measuring performance of an IT organization?
When deleting elements from a hash table with linear probing, a special marker needs to be inserted in place of each deleted elements. Give an algorithm to perform deletion without the use of a special marker.
Provide one (1) example of a situation where the use of a packet sniffer might be justified. Explain why you believe it would be okay to use a packet sniffer in this situation.
How the Fed Should Respond to Prevailing Conditions. Consider the existing economic conditions, including inflation and economic growth.
You are a shareholder in a C corporation. The corporation earns $ 2.06 per share before taxes.
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