/// <summary> /// Create batch data as a Value object from a dense source buffer. /// Batch data of the specified dataSize are copied from the source buffer /// starting at the specified starting position /// </summary> /// <typeparam name="T">float or double</typeparam> /// <param name="sampleShape">shape of the Value</param> /// <param name="dataBuffer">source data buffer</param> /// <param name="dataStart">index to the source data buffer where batch data start</param> /// <param name="dataSize">size of the data</param> /// <param name="device">device where data are allocated</param> /// <param name="readOnly">whether data are mutable</param> /// <returns>the batch data value</returns> public static Value CreateBatch <T>(NDShape sampleShape, T[] dataBuffer, int dataStart, int dataSize, DeviceDescriptor device, bool readOnly = false) { if (typeof(T).Equals(typeof(float))) { return(Value._CreateBatchFloat(sampleShape, dataBuffer as float[], dataStart, dataSize, device, readOnly)); } else if (typeof(T).Equals(typeof(double))) { return(Value._CreateBatchDouble(sampleShape, dataBuffer as double[], dataStart, dataSize, device, readOnly)); } else { throw new ArgumentException("The data type " + typeof(T).ToString() + " is not supported. Only float or double is supported by CNTK."); } }
/// <summary> /// Create Value object from OneHotVector input as batch data, for 1D tensor only. /// </summary> /// <typeparam name="T">data type</typeparam> /// <param name="dimension">data dimension</param> /// <param name="batch">data batches</param> /// <param name="device">device</param> /// <param name="readOnly">whether it a readonly value</param> /// <returns></returns> public static Value CreateBatch <T>(int dimension, IEnumerable <int> batch, DeviceDescriptor device, bool readOnly = false) { var inputVector = Helper.AsSizeTVector(batch); if (typeof(T).Equals(typeof(float))) { return(Value._CreateBatchFloat((uint)dimension, inputVector, device, readOnly)); } else if (typeof(T).Equals(typeof(double))) { return(Value._CreateBatchDouble((uint)dimension, inputVector, device, readOnly)); } else { throw new ArgumentException("The data type " + typeof(T).ToString() + " is not supported. Only float or double is supported by CNTK."); } }
/// <summary> /// Create Value object from dense input as batch data. /// </summary> /// <typeparam name="T">float or double</typeparam> /// <param name="sampleShape">shape of the Value</param> /// <param name="batch">batch of data</param> /// <param name="device">device</param> /// <param name="readOnly">readonly value</param> /// <returns>the value</returns> public static Value CreateBatch <T>(NDShape sampleShape, IEnumerable <T> batch, DeviceDescriptor device, bool readOnly = false) { if (typeof(T).Equals(typeof(float))) { var inputVector = Helper.AsFloatVector(batch); return(Value._CreateBatchFloat(sampleShape, inputVector, device, readOnly)); } else if (typeof(T).Equals(typeof(double))) { var inputVector = Helper.AsDoubleVector(batch); return(Value._CreateBatchDouble(sampleShape, inputVector, device, readOnly)); } else { throw new ArgumentException("The data type " + typeof(T).ToString() + " is not supported. Only float or double is supported by CNTK."); } }