allocate thread local memory i-th node

allocate thread local memory, should be called for each specific task

Indicator for XGBoost to automatically concatenate pages.

* @brief Get the number of features for the current batch. */

* @brief Bind the socket to the address. * * @param ip[in] The IP address. * @param port [in,out] Let the system choose a port if this

* @brief Change a non leaf node to a leaf node, delete its children * * @param nidx Node id * @param value The new leaf value */

At least one batch parameter is initialized.

* @brief Clear the cache, mark whether the cache is exceeded the limit. */

* @brief Close the socket, called automatically in destructor if the socket is not closed. */

Helper function to copy gradient from array interface to linalg::Matrix

Call this at the last iteration (it == n_batches).

Clear the feature vector.

Fill the data into the feature vector.

Split up an impl function for simple tests.

get a range of indexes for the second dimension of i-th block(task)

@brief get last error code if any */

* @brief Whether the out_position in `Update` is valid. This determines whether adaptive * tree can be used. */

@brief assign the storage to the view. */

* \brief Initialize the object, by extracting shape, stride and type. * * The function also perform some basic validation for input array. La

* @brief Load feature type info from names, returns whether there's categorical features. */

Initialize matrix, copy data from `data` if it's not NULL. */

* \brief Maximum relevance degree for NDCG */

* @brief Get a string representation of the device and the ordinal. */