Boost Questions

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Apple M1X MacBook pro benchmark leak with huge performance boost

apple's new generation M1X processor is getting huge performance uplift with its 12 high-performance core count. We saw some performance leaks from well-known sources and they look promising.

How to filter items from a std::map?

I have roughly the following code. could this be made nicer or more efficient? perhaps using std::remove_if? can you remove items

XgBoost : The least populated class in y has only 1 members, which is too few

Im using xgboost implementation on sklearn for a kaggle's competition. however, im getting this 'warning' message : $ python script1.py

How to create a C++ Boost undirected graph and traverse it in depth first search (DFS) order?

How to create a c++ boost undirected graph and traverse it in depth first search (dfs) order?

create_directory("/MyPath/.MyFolder") is not creating directory; expected that a hidden directory is created

I want to create a hidden directory in boost 1.7.3 . when i try : boost::filesystem::create_directory("/mypath/.myfolder");

Using boost::recursive_variant with std::unordered_map

I'm trying to create a std::unordered_map with a boost::variant as a key and with integer value. what i'm trying to make work is

How to use boost::bind in C++/CLI to bind a member of a managed class

I am using boost::signal in a native c++ class, and i now i am writing a .net wrapper in c++/cli, so that i can expose the native c++ callbacks as

How can I integrate xgboost in spark? (Python)

I am trying to train a model using xgboost on data i have on the hive, the data is too large and i cant convert it to pandas df, so i have to use

'Booster' object has no attribute 'score' - Accuracy

While looking for the best parameters for xgboost i came across a problem. the whole went well and i manage to attach parameters to the

Android: error: use of undeclared identifier 'fseeko'

When i am trying to build a boost library in android using its source code, i am getting below error release|armeabi-v7a :

pcl::PointCloud in shared memory

I'm looking for a way to share a pcl::pointcloud between two processes without using files on the disk. in particular, i'm interested in using

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How to test XGB model with a single new sentence?

We trained a xgb model with two columns. summarized has texts. security_flag has 0 and 1. test and training works well. now we want to add a new

No such file pyconfig.h in cpp proj

So, i'm trying to integrate some python code to c++ project. for that purpose i've created simple test project using clion. but met with a

Using datetime64 feature type in building a model?

I have a dataframe which includes around 50 features. in my experiment i have a classification problem so i want to train the model by

How to "map" a variadic macro with boost preprocessor?

Say i have a macro f: #define f(x) /*...*/ and a macro g that takes one or more arguments: #define

boost:math:factorial2 throws an error while computing double factorial of -1?

The official documentation of boost library in c++ confirms that -1!! is defined. however, when i try to compute the double factorial of -1, it

Boost multiprecision rounding towards 0

The code below compiles just fine on windows using vc++: #include <boost/multiprecision/cpp_int.hpp> #include

How to build boost 1.69.0 for Android with NDK r18b using dec1/Boost-for-Android?

I tried to use https://github.com/dec1/boost-for-android to

Trouble training xgboost on categorical column

I am trying to run a python notebook

LabelEncoder is not converting the strings into numericals (0,1,2)

I have a XGBoost model trained in python, but it will get a different predictions when loaded in scala and used the same features, why?

I have a xgboost model trained in python api named as my_fpd20.model, now i want use it in scala to execute the prediction operation,

Problem regarding predict_proba function in XGBoost in python

Currently i am working on a binary classification problem. i want my predicted output to be the probability, not 1 or 0 using xgboost. i

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Using xgboost in BaggingRegressor

I need to run xgboost in baggingregressor, i use xgboost import xgboost d_train =

How can I interrupt boost message queue send & receive that are being blocked by signals?

I have a process which is using boost message queue. when it is being blocked in either send or receive due

How to output leaf in pandas dataframe from XGBoost classifier

I have read in a csv file which contains 8 predictive features (col_list) and one target feature (target variable is called

ImportError: No module named 'xgboost'

This import sys from platform import python_version print(sys.base_prefix) print(python_version()) outputs

this.props not accessible when using ApolloClient

I am using apollo-boost and i have created an apolloclient and i want to do some redirection after a mutation is run but i cannot access the

react with GraphQL Clients

Using react with graphql clients like apollo client is a good idea? the same results i can achieve with

Hyperparameter Grid Search with XGBoost - Scoring function vs Evaluation Metric

Dealing with an imbalance dataset problem (7% vs 93%), i want to find out the best structure of my xgboost model using

Android Chartboost SDK Error

I have the next error with my app with chartboost sdk integrated: my app runs fine and show static and video interstitial, i can launch my app

How can I parse a char pointer string and put specific parts it in a map in C++?

Lets say i have a char pointer like this: const char* mys = "john 25 lost angeles"; i want to parse this

Xgboost throws an error when trying to import

I have a project that is using xgboost. we now transfer the project to containers. but after installing it using pip, it throws the following

How to specify static python for boost.python?

I want to link python to boost statically to use python and boost.python for each dll-library inside one process independently from other

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Apollo boost - __typename in query prevent new mutation

I have a problem in my meteor/react/apollo (with boost) project. when i query data from the server, it adds __typename to every object and

does boost::asio co_spawn create an actual thread?

When looking through boost asio co_spawn documentation

Elasticsearch v6.0.1 Nodejs boost match with one of arrays elements

In my project i have user objects like this. { "_id": "1", "username": "raggro", "name": "vardan tadevosyan" }, { "_id":

Cmake not detecting boost-python when installing ROS

I have been trying to install ros on my mac and have gotten around the errors with different libraries depending on different versions of

Calling a function of an object instance using embedded Python

I want to be able to run python scripts in my app to allow automating stuff and modifying existing objects/calling methods of existing

predict method used with xgboost model returns error message relating to features missing

I am fitting a multiclass classification model but once i am done i can not make predictions. instead i get an error message i can not

Trouble with linking boost::python::numpy

I wrote a small example to show what's going on. my_test.cpp #include <iostream> #include

How set learning xgboost with evaluation set?

While using sklearn wrapper this is pretty easy to do for me this way: import xgboost as xgb clf = xgb.xgbclassifier(

Why two different AUC scores are produced when evaluated on same data and same algorithm

I am working on a classification problem whose evaluation metric in roc auc. so far i have tried using xgb with different parameters. here is the

Construct n-dimensional boost point

Problem: boost/geometry/geometries/point.hpp point template does not provide a way to construct an n-dimensional point type

How to set up cloudboost in android app with my own server?

I am new in cloud boost. i am using cloud boost in my android application for chat feature. we have integrated cloud boost sdk on

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How to build a static boost library?

More specifically static boost::iostreams with zlib (aka libz) support. the problem is, that when i try to link static library it throws

Can't link static boost::iostreams library

I build the following code: #include <boost/iostreams/filter/zlib.hpp> #include <iostream> int main(int argc, char*

build boost::iostreams with zlib

I'm trying to build the following code: #include <boost/iostreams/filter/zlib.hpp> #include <iostream> int main(int

Cant link boost library with g++ Windows

I'm trying to build the following code: content of "source.cpp" #include <boost/filesystem.hpp>

How to get prediction p-values of an XGBClassifier?

I'd like to know how confident an xgbclassifier is for each prediction it makes. is it possible to have such a value? or is the predict_proba

Speed up Rails App on development env.?

I have huge rails app on development right now, which run very slow on -e development. i use mongrel as web server. is there any

C++ "hello world" Boost tee example program

The boost c++ library has function template

UDP socket still bound to previous port – how to reuse it?

I have an audio streaming application that uses boost udp sockets bound to port 50050. i currently have a problem when the application is shut

Slick carousel jumping in between slide

Edit: @insanebugs soltuion works (edit: @insanebugs soltuion works edit: @insanebugs soltuion works edit: @insanebugs soltuion works edit:

python boost scope cause NoneType error

I've compiled a third-party python module （alembic）, alembic import another python module （imath） by

Boost::Spirit doubles character when followed by a default value

I use boost::spirit to parse (a part) of a monomial like x, y, xy, x^2, x^3yz. i want to save the variables of the monomial into a map, which also

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Multimap with key as unordered set and value as integer pair - unable to call find member function

Consider code: #include <unordered_map> #include <unordered_set> #include <boost/functional/hash.hpp> typedef

Boost gzip how to output compressed string as text

I'm using boost gzip example code here. i am

Boost.Spirit X3 -- operator minus does not work as expected

Consider the following code: test_case("requirements parser description",

Issues linking Boost.python example

I'm trying to compile

Asio: how to get async data back into synchronous method

I'm using asio for async io, but there are some times where i'd like to "escape" the async world and get my data back into the regular

How boost.asio discover which port is my server app listening on?

It is a little bit strange to me that boost.asio doesn`t use basic concept when client app connecting to the server - using ip address and port.

Python method to boost function

I have a method exported to python using boost python that takes a boost::function as an argument. from what i have read boost::python

Boost shared_ptr container question

Let's say i have a container (std::vector) of pointers used by a multi-threaded application. when adding new pointers to the container, the code

Python C API - How to construct object from PyObject

I'm looking to find out if there's a nice, "native" way to construct an object given a pyobject* that is known to be a type.

How to load js files on crudbooster

I am trying to load a js file but this code based on the documentation is not working. $this->load_js = array();

Error while opening pivx wallet on ubuntu

I am new in pivx technologies. i will get the error when opening pivx wallet that pivx-qt:

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