Programmer Group

[note]: the data of two books are loaded here, both of which are mentioned in Li Mu's divine book. Since the code encapsulated by Mu Shen is loaded Time machine, I copied the code of the previous two blogs here to load the Star Wars dataset. The following content is a reproduction of Mu God's curriculum and code. I will mark the knowledge p ...

MessagePassing in Python geometric Convolution computation in the graph is usually called neighborhood aggregation or message passing. Definition x i ( k − ...

Original link: http://tecdat.cn/?p=24162In this example, we consider Markov transformation stochastic volatility model.statistical modelLet yt be the dependent variable and xt be the unobserved logarithmic volatility of yt. For t ≤ tmax, the stochastic volatility model is defined as followsThe state variable ct follows a two state Markov pro ...

Median segmentation In RGB color space, the three primary colors R, G and B correspond to three coordinate axes of the space, and each coordinate axis is quantized to 0-255. 0 corresponds to all black and 255 corresponds to all white. In this way, a color cube with 256 sides is formed, and all possible colors correspond to a point on the c ...

1 Introduction to the experiment Experimental requirements: implement a handwritten numeral recognition program, as shown in the figure below. The neural network is required to include a hidden layer, and the number of neurons in the hidden layer is 15. Overall idea: mainly refer to the introduction of neural network in Chapter 5 of waterme ...

Original link: http://tecdat.cn/?p=24152What is PCR? (PCR = PCA + MLR)• PCR is a regression technique that processes many x variables • given Y and X data: • PCA on X matrix – define a new variable: principal component (score) • in multivariate linearity_ Return_ (_MLR_)   Some of these new variables are used ...

Tmall elf open experimental platform experiment - switching intention, parameter transfer Reference link: AliGenie - skill application platform 1, Create two intentions Then, in the first two experiments, we continue to create new two intentions to realize the speech skills associated with multiple intentions. Through learning, you will ...

Original link: http://tecdat.cn/?p=24148Especially in economics / econometrics, modelers do not believe that their models can reflect reality. For example, the yield curve does not follow the three factor Nelson Siegel model, the relationship between stocks and their related factors is not linear, and the volatility does not follow the Garch(1, ...

Come and explore happiness together (complete) This learning note is the learning content of Alibaba cloud Tianchi Longzhu plan machine learning training camp. The learning links are: AI training camp machine learning - Alibaba cloud Tianchi Introduction to the game title (although there is already an introduction to the game title in the a ...

To be honest, the concept of artificial intelligence is somewhat too large, including in-depth learning, machine learning, intensive learning and so on, while in-depth learning includes image recognition, speech recognition, natural language processing, prediction analysis; Machine learning includes supervised learning, unsupervised learning an ...