voting

问题 I have a data frame with 4 different groups of features. I need to create 4 different models with these four different feature groups and combine them with the ensemble voting classifier. Furthermore, I need to test the classifier using k-fold cross validation. However, I am finding it difficult to combine different feature sets, voting classifier and k-fold cross validation with functionality available in sklearn. Following is the code that I have so far. y = df1.index x = preprocessing

问题 I'm trying to allow users to vote on threads without having to sign in/up in order to increase user engagement. How do I do this? At the moment my current though process is to tie votes with the visitor's IP address in order to prevent multiple votes, though another issue is that request.remote_ip is not getting me the correct IP (I'm on a school network). Any suggestions? Thanks very much! Vote action in Threads Controller def upvote @thread = Thread.find(params[:id]) current_user.up_vote(

问题 I'm new here, but I love the site. I checked through the other similar questions, but I didn't see what I'm looking for. I'm a musician, and I've been doing a "song of the day" thing for a while where I write a little song every day. I want to post the songs as <div> s inside <li> . In the divs, I just want a simple mp3 player and a "like" or "dislike" button. The user can vote and the song will move up or down the <li> based on the number of votes. I want to keep this simple with the math

问题 I'm new here, but I love the site. I checked through the other similar questions, but I didn't see what I'm looking for. I'm a musician, and I've been doing a "song of the day" thing for a while where I write a little song every day. I want to post the songs as <div> s inside <li> . In the divs, I just want a simple mp3 player and a "like" or "dislike" button. The user can vote and the song will move up or down the <li> based on the number of votes. I want to keep this simple with the math

问题 Plugins: Thumbs Up & JQuery 1.5.2 (needed for another old gem) I'm trying to render an updated vote count w/o a full HTTP request when a user votes on a post. Currently, it refreshes the page on every vote. Posts Controller def vote_up post = Post.find(params[:id]) current_user.vote_exclusively_for(post) respond_to do |format| format.js format.html {rRedirect_to :back} end end def vote_down post = Post.find(params[:id]) current_user.vote_exclusively_against(post) respond_to do |format| format

问题 I am about to write a voting method for my site. I want a method to stop people voting for the same thing twice. So far my thoughts have been: Drop a cookie once the vote is complete (susceptible to multi browser gaming) Log IP address per vote (this will fail in proxy / corporate environments) Force logins My site is not account based as such, although it aggregates Twitter data, so there is scope for using Twitter OAuth as a means of identification. What existing systems exist and how do

问题 It appears there there were interesting things going on in cryptography: the first homomorphic encryption scheme appeared recently (explanation, HT). Roughly speaking, it is a way of encoding x into f(x) such that you can compute f(x+y) easily knowing f(x) and f(y) even though you can't easily restore x and y (and same for f(x*y) ). What are practical applications for schemes of this type (once their security has been established)? To me, it appears they could make writing algorithms for

问题 It appears there there were interesting things going on in cryptography: the first homomorphic encryption scheme appeared recently (explanation, HT). Roughly speaking, it is a way of encoding x into f(x) such that you can compute f(x+y) easily knowing f(x) and f(y) even though you can't easily restore x and y (and same for f(x*y) ). What are practical applications for schemes of this type (once their security has been established)? To me, it appears they could make writing algorithms for

问题 An odd number set is recommended. My doubt is as one goes down from an odd set, we have an even number set. The number of members fluctuate between even and odd when they go down one by one. We always don’t have odd member scenario. Can some one explain how MongoDB voting works? 回答1: The voting is done by a majority of voting members. Imagine a Replica Set with three (voting) members. Let's say that Node A is primary, and nodes B+C are secondaries. Node A goes down, so nodes B+C go to

问题 I installed the acts_as_votable gem, it works in the console like it should (like it says in the documentation). So my question is how to set up a form for upvote and downvote buttons? or can they simply be links? here is the documentation: github.com/ryanto/acts_as_votable/blob/master/README.markdown I have a user and a picture model; the user is supposed to be able to like the picture. code from the picture view, where the buttons should be: <% for picture in @pictures %> <p> <%= image_tag