lookup

问题 I have some training data (TRAIN) and some test data (TEST). Each row of each dataframe contains an observed class (X) and some columns of binary (Y). BernoulliNB predicts the probability of X given Y in the test data based on the training data. I am trying to look up the probability of the observed class of each row in the test data (Pr). Edit: I used Antoine Zambelli's advice to fix the code: from sklearn.naive_bayes import BernoulliNB BNB = BernoulliNB() # Training Data TRAIN = pd

问题 I've build some code to allow me to match a dictionary of dictionary containing hash as key, and another dict array with hashes, but I obtain unexpectedly high results, all compared data are hashed, it produce good matching results but I've a problem with performance I can't explain and I need to find an explanation. Performance results are like below: "field_1": { "communes_fr": 0.02382307815551758, <-- ** Here is the problem ** "departements": 0.0023715062141418455, "diplome": 0

问题 Suppose I have the following data table in Excel Company Amount Text Oracle $3,400 330 Richard ERP Walmart $750 348 Mary ERP Amazon $6,880 xxxx Loretta ERP Rexel $865 0000 Mike ERP Toyota $11,048 330 Richard ERP I want to go through each item in the "Text" column, search the item against the following range of names: Mary Mike Janine Susan Richard Jerry Loretta and return the name in the "Person" column, if found. For example: Company Amount Text Person Oracle $3,400 330 Richard ERP Richard

问题 I'm trying to follow the documentation for lookups that span relationships for a "reverse" relationship, found here. Here is my model code: class Foo(models.Model): initiator = models.ForeignKey(User) date_time = models.DateTimeField() ... And here is my query code: ... now = datetime.now() users = User.objects.filter(foo__date_time__gte = now) ... This results in the following error: django.core.exceptions.FieldError: Cannot resolve keyword 'foo' into field. Choices are: _message_set, date

问题 I have a matrix of number values of 0-8 which I would like to replace with descriptive values. My current matrix is as follows: Muni<-c("Town1","Town2","Town3","Town4","Town5") Company1<-c(0,4,2,8,1) Company2<-c(5,5,0,1,4) Company3<-c(1:5) Company4<-c(8,4,3,1,8) (Matrix<-cbind(Muni,Company1,Company2,Company3,Company4)) # Muni Company1 Company2 Company3 Company4 # [1,] "Town1" "0" "5" "1" "8" # [2,] "Town2" "4" "5" "2" "4" # [3,] "Town3" "2" "0" "3" "3" # [4,] "Town4" "8" "1" "4" "1" # [5,]

问题 Whenever I am using lcov command (lcov-1.9) for gcc 3.4 compiled objects and the corresponding .gcda files, I get an error. Command I execute: lcov -c -d . --gcov-tool /usr/bin/gcov34 -o datafile Error: /usr/bin/perl: symbol lookup error: /u01/R122_EBS/fs1/FMW_Home/webtier/perl/lib/5.10.0/x86_64-linux-thread-multi/auto/Cwd/Cwd.so: undefined symbol: Perl_Istack_sp_ptr Is it because something is wrong with Perl? (But, Perl on our development server should be probably be alright.) Or because of

问题 (Converting a Dictionary to ILookup is not very nice: How do I convert a Dictionary to a Lookup? ) I want to have an interface for my container class with the following method: ILookup<Type, Entry> Query ( IEnumerable<QueryClause> query ); Each query clause specifies which and how many (and some more details) of a special kind of Entry should be taken out of the underlying container. My implementation currently looks something like this: var result = new Dictionary<Type, List<Entry>>();

问题 With an enum like this one where each key has several values ABBR1("long text 1", "another description 1", "yet another one 1"), ABBR2("long text 2", "another description 2", "yet another one 2"), //and so on... how can I reverse lookup an abbreviation (constant) by calling a method like getAbbreviation(descriptionText) ? I'm basically looking for an implementation as described here, I think, but with the difference that each ENUM key (constant) has several values coming with it, and I want

问题 I have found this nice piece of code to get a hostname from a IP Address. The problem is that it always fail both on simulator and on my 3GS. See below the code, the error is commented within: + (NSArray *)hostnamesForAddress:(NSString *)address { // Get the host reference for the given address. CFStreamError streamError; struct addrinfo hints; struct addrinfo *result = NULL; memset(&hints, 0, sizeof(hints)); hints.ai_flags = AI_NUMERICHOST; hints.ai_family = PF_UNSPEC; hints.ai_socktype =

问题 I have an Nx2 array K1 with the location of N keypoints and a 3 dimensional WxHx3 array Kart1(width,height,coordinates) that maps coordinates to every pixel of an image. For every keypoint in K1 I want to read the location of the pixel in Kart1 and evaluate the coordinates (search for the min/max or calculate the mean) in a 3x3 kernel around it and assign a value to the current pixel in KPCoor1 . My current approach looks like this: for ii=1:length(K1(:,1)) %for every keypoint in K1 MinDist