Given a MATLAB uint32 to be interpreted as a bit string, what is an efficient and concise way of counting how many nonzero bits are in the string? I have a working, naive approach which loops over the bits, but that's too slow for my needs. (A C++ implementation using std::bitset count() runs almost instantly). I've found a pretty n...
I'm using MySQL. I have a table which looks like that: id: primary key content: varchar weight: int What I want to do is randomly select one row from this table, but taking into account the weight. For example, if I have 3 rows: id, content, weight 1, "some content", 60 2, "other content", 40 3, "something", 100 The first row has 3...
Hi, I'm trying to select a number of elements from a mysql table based on their weight, example table being as follows. Name | Weight ------------- Bobo | 0.1 Jill | 0.3 Andy | 0.5 Dave | 0.9 Where weight is a float between 0 and 1. What I would like to do is be able to select up to x rows based using the weight with a random facto...
I have dynamic sql that perform paging and a full text search using CONTAINSTABLE which works fine. Problem is I would like to use FREETEXTTABLE but weight the rank of some colums over others Here is my orginal sql and the ranking weight I would like to integrate (I have changed names for privacy reasons) SELECT * FROM (SELECT TOP 10 T...
How do you make a graph in networkx such that its layout is 2D, radial, and the edges are plotted in increasing edge lengths or weights? ...
Working with PHP for this. From a given set of items, each with its own weight, I need to automatically calculate the most effective way to package the items into 100 lbs packages (max package weight of 100 lbs is static, but can be changed in the future). A single package cannot exceed the maximum specified. As an example, I have 5 i...
I'm working on a site where the user can select his country, for now I've created an array which contains alla nation names and relative codes like it code for Italy: <?php $nations[] = array ("code" => "af", "name" => "Afghanistan"); $nations[] = array ("code" => "ax", "name" => "Aland Islands"); $nations[] = array ("code" => "al", "na...
I was wondering what is the effective weight of extension methods, if used very wildly. If, for example, i decide to create a lot of string/int/datetime extension methods for many of the common day-to-day tasks, to obtain a kind of fluent interface as a result, it may be that the overall weight would pump up excessively? And if yes, wou...
I'm working on the UI side of a WPF project. My favourite reference while xaml'ing (besides stackoverflow :) ) at the moment is Adam Nathan's "Windows Presentation Foundation Unleashed". He gives the following tip regarding control templates: "Rather than using a ContentControl inside a control template, you should use the lighter-weight...
Hi, I was browsing the web looking for a indexing and search framework and stumbled upon Solr. A functionality that we abolutely need is to boost results based on what field contained the hit. A small example: Consider a record like this: <movie> <title>The Dark Knight</title> <alternative_title>Batman Begins 2</alternative_title...
Hello I have these tables: businesses :name :rating categories :name business_categories :business_id :category_id reviews content business_id Now I want to do a search, when type keywords, match it in these columns: business.name business.category.name business.review.content Then order the results by the weight,...
Hello: I have a note table with columns: title :string content :text rating :integer and a thinking_sphinx configuration: define_index do indexes :title, :sortable => true indexes :content end Then I can search the notes and assign weights to title and content to define the order or the result: Note.search "abc", :match_mode...
How can I find all the available font weights for a given font in Java? The TextAttribute for font weight lists 11 different weight constants, way more than just Font.PLAIN and Font.BOLD. I'd like to know which ones actually exist for a given font family, so I can make sure I'm only using weights for which a font face exists. The getA...
I'm sorry if it's not an appropriate question for this site, and if it's necesary I'll close this question. But maybe someone could give me an ideea: I'm trying to find a more complex index to make an hierarchy. For example: 5 votes from 6 = 83% AND 500 votes from 600 = 83%; 10 votes from 600 = 1.66% If I make a hierarchy with the ...
I always read about this funny weight value in the Android documentations. Now I want to try it for the first time but it isn't working at all. As I understand it from the documentations this layout: <LinearLayout android:layout_width="fill_parent" android:layout_height="wrap_content" android:orientation="horizontal...
How to randomly pick up N numbers from a vector a with weight assigned to each number? Let's say: a = 1:3; % possible numbers weight = [0.3 0.1 0.2]; % corresponding weights In this case probability to pick up 1 should be 3 times higher than to pick up 2. Sum of all weights can be anything. ...
Hello, I have a requirement in my .net project where I need to select an item from a collection, each item has a Weight (integer from 1 to 10) assigned to it. I need a random generator that would take this weight into consideration i.e. the higher the weight, the more chances the object would be selected. Any code samples in .net are ap...
I'm trying to dynamically create TableRow objects and add them to a TableLayout. The TableRow objects have 2 items, a TextView and a CheckBox. The TextView items need to have their layout weight set to 1 to push the CheckBox items to the far right. I can't find documentation on how to programmatically set the layout weight of a TextView ...
I have to sum the weight of the certain products, but they are in different lines of MySQL. How to do it? Here is an example of my database: ID | Product_id | weight_kg | Quantity | 1 | 201 | 6 | 3 | 2 | 102 | 3 | 1 | 3 | 103 | 4 | 4 | 4 | 200 | 2 ...
According to documentaion, FILL_PARENT basically lets the view take up the entire extra space. Weight also dictates how much of the extra space can be taken by the view. What is the difference? For eg: What happens when I use, new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT, 1.0f) ...