Answered By : Raphael Have a look at how compression algorithms work. At least those in the Lempel-Ziv family (gzip uses LZ77, zip apparently mostly does as well, and xz uses LZMA) compress somewhat locally: Similarities that lie far away from Read More …
Author: ignougroup
Applying Expectation Maximization to coin toss examples
Answered By : Nicholas Mancuso (This answer uses the second link you gave.) $newcommand{Like}{text{L}}newcommand{E}{text{E}}$Recall the definition of likelihood: $$Like[theta | X] = Pr[X| theta] = sum_Z Pr[X, Z | theta]$$ where in our case $theta = (theta_A, theta_B)$ are the estimators Read More …
Finding paths with smallest maximum edge weight
Answered By : Joe You’re right; it’s essentially a MST problem. First build the minimum spanning tree, then use breadth-first or depth-first search to find the unique path in the tree between the two vertices. Problem Detail: I need to find the Read More …
Do you get DFS if you change the queue to a stack in a BFS implementation?
Answered By : Aryabhata No, this is not the same as a DFS. Consider the graph If you push the nodes in right to left order, the algorithm gives you a traversal: $A, B , E, C , D$ while a Read More …
Can we say DFA is more efficient than NFA?
Answered By : Khaur There are two answers, depending on how you define efficient. Compactness of representation Telling more with less: NFAs are more efficient. Converting a DFA to an NFA is straightforward and does not increase the size of the Read More …
Can a runtime environment detect an infinite loop?
Answered By : Kyle Strand It might be theoretically possible for a runtime environment to check for such loops using the following procedure: After ever instruction executed, the runtime environment would make a complete image of the state of a running Read More …
Generating Combinations from a set of pairs without repetition of elements
Answered By : Carl Mummert One direct way is a recursive procedure that does the following on each invocation. The input to the procedure is a list of pairs that have already been chosen and a list of all the pairs. Read More …
Reason to learn propositional & predicate logic
Answered By : Guy Coder I tend to like Unification and anything related to it. If you don’t know propositional & predicate logic, then you are skipping the basics of logic. If you have an interest in anything listed, then it Read More …
What is the asymptotic runtime of this nested loop?
Answered By : Gilles The result is correct, but your reasoning is not. You can’t mix big-oh with ellipses. It happens to work here because of extra conditions that happen to be true but that you haven’t checked. Why summing big-ohs Read More …
Boolean search explained
Answered By : Yuval Filmus Hint: The search x AND y will result in 10 000 hits. Problem Detail: My mother is taking some online course in order to be a librarian of sorts, in this course they cover boolean searches, so Read More …
