数据提取(Data Extraction)
This step involves deciding the internal and external data sources that can inform the model and then obtaining the data from these sources. Additional dimensions to consider here are the variety (e.g., structure or unstructured data), volume, velocity, and veracity of data. In the unstructured data domain one needs to consider text-based data and how they will be ingested (e.g., streaming data from social media or static documents), audio data, image, video, and sensor data.
此步骤涉及确定可以通知模型的内部和外部数据源,然后从这些源中获取数据。 这里要考虑的其他维度是数据的多样性(例如,结构或非结构化数据),数据量,速度和准确性。 在非结构化数据域中,需要考虑基于文本的数据以及如何提取它们(例如,来自社交媒体或静态文档的流数据),音频数据,图像,视频和传感器数据。