[REFACTOR] cleanup structure

.gitignore

@@ -51,7 +51,6 @@ Debug
 ./xgboost
 ./xgboost.mpi
 ./xgboost.mock
-rabit
 #.Rbuildignore
 R-package.Rproj
 *.cache*
@@ -65,9 +64,10 @@ java/xgboost4j-demo/data/
 java/xgboost4j-demo/tmp/
 java/xgboost4j-demo/model/
 nb-configuration*
-dmlc-core
 # Eclipse
 .project
 .cproject
 .pydevproject
 .settings/
+build
+

.gitmodules

@@ -0,0 +1,6 @@
+[submodule "dmlc-core"]
+	path = dmlc-core
+	url = https://github.com/dmlc/dmlc-core
+[submodule "rabit"]
+	path = rabit
+	url = https://github.com/dmlc/rabit

README.md

@@ -11,7 +11,7 @@ An optimized general purpose gradient boosting library. The library is paralleli
 
 It implements machine learning algorithms under the [Gradient Boosting](https://en.wikipedia.org/wiki/Gradient_boosting) framework, including [Generalized Linear Model](https://en.wikipedia.org/wiki/Generalized_linear_model) (GLM) and [Gradient Boosted Decision Trees](https://en.wikipedia.org/wiki/Gradient_boosting#Gradient_tree_boosting) (GBDT). XGBoost can also be [distributed](#features) and scale to Terascale data
 
-XGBoost is part of [Distributed Machine Learning Common](http://dmlc.github.io/) <img src=https://avatars2.githubusercontent.com/u/11508361?v=3&s=20> projects
+XGBoost is part of [Distributed Machine Learning Common](http://dmlc.github.io/) projects
 
 Contents
 --------
@@ -68,7 +68,6 @@ Bug Reporting
 
 Contributing to XGBoost
 -----------------------
-
 XGBoost has been developed and used by a group of active community members. Everyone is more than welcome to contribute. It is a way to make the project better and more accessible to more users.
 * Check out [Feature Wish List](https://github.com/dmlc/xgboost/labels/Wish-List) to see what can be improved, or open an issue if you want something.
 * Contribute to the [documents and examples](https://github.com/dmlc/xgboost/blob/master/doc/) to share your experience with other users.
@@ -78,7 +77,3 @@ License
 -------
 © Contributors, 2015. Licensed under an [Apache-2](https://github.com/dmlc/xgboost/blob/master/LICENSE) license.
 
-XGBoost in Graphlab Create
---------------------------
-* XGBoost is adopted as part of boosted tree toolkit in Graphlab Create (GLC). Graphlab Create is a powerful python toolkit that allows you to do data manipulation, graph processing, hyper-parameter search, and visualization of TeraBytes scale data in one framework. Try the [Graphlab Create](http://graphlab.com/products/create/quick-start-guide.html)
-* Nice [blogpost](http://blog.graphlab.com/using-gradient-boosted-trees-to-predict-bike-sharing-demand) by Jay Gu about using GLC boosted tree to solve kaggle bike sharing challenge:

appveyor.yml

@@ -1,36 +0,0 @@
-environment:
-  global:
-   CMD_IN_ENV: "cmd /E:ON /V:ON /C .\\python-appveyor-demo\\appveyor\\run_with_env.cmd"
-   DISABLE_OPENMP: 1
-   VisualStudioVersion: 12.0
-   
-  matrix:
-    - PYTHON: "C:\\Python27-x64"
-      PYTHON_VERSION: "2.7.x" # currently 2.7.9
-      PYTHON_ARCH: "64"
-
-    - PYTHON: "C:\\Python33-x64"
-      PYTHON_VERSION: "3.3.x" # currently 3.3.5
-      PYTHON_ARCH: "64"
-
-platform:
-  - x64
-
-configuration:
-  - Release
-
-install:
-  - cmd: git clone https://github.com/ogrisel/python-appveyor-demo
-  - ECHO "Filesystem root:"
-  - ps: "ls \"C:/\""
-
-  - ECHO "Installed SDKs:"
-  - ps: "ls \"C:/Program Files/Microsoft SDKs/Windows\""
-
-  - ps: python-appveyor-demo\appveyor\install.ps1
-  - "SET PATH=%PYTHON%;%PYTHON%\\Scripts;%PATH%"
-  - "python --version"
-  - "python -c \"import struct; print(struct.calcsize('P') * 8)\""
-
-build: off
-  #project: windows\xgboost.sln

dmlc-core

@@ -0,0 +1 @@
+Subproject commit 4b951c0378386b7f4d9eae72be2ecd3b9c816afe

include/xgboost/base.h

@@ -0,0 +1,15 @@
+/*!
+ * Copyright (c) 2015 by Contributors
+ * \file base.h
+ * \brief defines configuration macros of xgboost
+ */
+#ifndef XGBOOST_BASE_H_
+#define XGBOOST_BASE_H_
+
+#include <dmlc/base.h>
+
+namespace xgboost {
+
+
+}  // namespace xgboost
+#endif  // XGBOOST_BASE_H_

include/xgboost/c_api.h

@@ -1,12 +1,11 @@
 /*!
- * Copyright (c) 2014 by Contributors
- * \file xgboost_wrapper.h
+ * Copyright (c) 2015 by Contributors
+ * \file c_api.h
  * \author Tianqi Chen
- * \brief a C style wrapper of xgboost
- *  can be used to create wrapper of other languages
+ * \brief C Style API of XGBoost, used to interfacing with other languages.
  */
-#ifndef XGBOOST_WRAPPER_H_
-#define XGBOOST_WRAPPER_H_
+#ifndef XGBOOST_C_API_H_
+#define XGBOOST_C_API_H_
 
 #ifdef __cplusplus
 #define XGB_EXTERN_C extern "C"
@@ -351,4 +350,4 @@ XGB_DLL int XGBoosterDumpModelWithFeatures(BoosterHandle handle,
                                            bst_ulong *len,
                                            const char ***out_models);
 
-#endif  // XGBOOST_WRAPPER_H_
+#endif  // XGBOOST_C_API_H_

include/xgboost/data.h

@@ -0,0 +1,8 @@
+/*!
+ * Copyright (c) 2014 by Contributors
+ * \file data.h
+ * \brief the input data structure for gradient boosting
+ * \author Tianqi Chen
+ */
+#ifndef XGBOOST_DATA_H_
+#define XGBOOST_DATA_H_

rabit

@@ -0,0 +1 @@
+Subproject commit bed63208af736c4aa289b629fbe5396bd9f513d9

src/c_api.cc

@@ -0,0 +1,2 @@
+#include <xgboost/c_api.h>
+