Programmer Think

1. General 1.1 industry background and pain points Lithofacies analysis is a research work based on the microscopic description and classification of rock slices. It is also an important technology in the study of sedimentation and diagenesis. It has a basic guiding position for the engineering practice of oil and gas exploration and developm ...

preface The actual combat series of this project is mainly based on the tutorials on the network. It mainly refers to the ideas and specific implementation codes in learning machine learning with Digo. However, the version used in the book should be python2. Some codes also have problems, some key steps are omitted, and some are syntax problem ...

scenario analysis Suppose the price of article a is 20.22 yuan / kg in 2000, 20.32 yuan / kg in 2001 and 21.01 yuan / kg in 2002. The middle price is omitted. Please predict the price of article a in 2022?This is a very simple linear regression case. We all know that we can predict the price in 2022 by drawing a straight line. So how to find ...

catalogue Walk into LightGBM What is LightGBM? Disadvantages of XGBoost Optimization of LightGBM Basic principles of LightGBM Histogram algorithm Histogram acceleration LightGBM parallel optimization Practice code Detailed explanation of parameters Code practice Optimal model and parameters (dataset 1000) Model tuning Every word ...

Basic data structure 1. Series For a Series, the most commonly used attributes are values, index, name, and dtype s = pd.Series(np.random.randn(5),index=['a','b','c','d','e'],name='This is a Series',dtype='float64') s a -0.152799 b -1.208334 c 0.668842 d 1.547519 e 0.309276 Name: This is a Series, dtype: float64 Accessing Ser ...

Background knowledge required for reading this article: first, lose programming knowledge1, Introduction   in life, every time we arrive at the meal point, we will silently recite in our hearts, "what are you going to eat later?", Maybe we don't want to go far after working all day today. At this time, we will decide that th ...

preface This article is reproduced in PyTorch deep analysis: how to save and load PyTorch model? The saving and loading methods of PyTorch model are explained in detail.   catalogue preface 1. You need to master three important functions 2 state_dict 2.1 state_ Introduction to Dict 2.2 saving and loading state_dict (already trained, no ...

What is seasonality? As long as the average value of the series changes regularly and periodically, we say that the time series shows seasonality. Seasonal changes usually follow the clock and calendar - usually a repetition of a day, week, or year. Seasonality is usually driven by the cycle of nature in a few days and years or social behavior ...

Unit 8: time series analysis in Google Earth engine 1 Introduction In this module, we will discuss the following concepts: Process remote sensing images of the ocean. Create a video from an image time series. Time series analysis in GEE. Add basic elements to the graphical user interface. 2 background The Deepwat ...

Initial value of weight (the pit here is too deep. This article is just an introduction to in-depth learning and will not pursue theory in detail) In the learning of neural network, the initial value of weight is particularly important. In fact, what kind of weight initial value is set is often related to the success of neural network lea ...