[case] clustering algorithm

KMEANS clustering https://www.cnblogs.com/pinard/p/6164214.html 1. Briefly describe the principle and workflow of K-means algorithm K sample points are randomly selected as the initial centroid Calculate the distance from other samples to K centroids respectively, and divide each sample into the nearest cluster For the new cluster, calcul ...

Posted by Deviants on Wed, 19 Jan 2022 14:44:04 +0100

PX4 from abandonment to mastery: position control code analysis

preface A person can go faster, and a group of people can go further. Exchange and learning plus qq:2096723956 More nanny PX4+ROS learning videos: https://b23.tv/ZeUDKqy Share knowledge and transfer positive energy. Please point out any omissions or mistakes Code version: PX4 1.11.3 Code location 1, Position control void PositionControl ...

Posted by zwiebelspaetzle on Wed, 19 Jan 2022 14:39:55 +0100

Modeling method for dealing with structural changes of time series 1

Previous articles in this column have discussed that under the condition of complex and changeable exogenous stimuli, the structure of time series data will change, so that outdated data is no longer suitable for current time series modeling. The general time series econometric modeling method itself does not have the function of identifying st ...

Posted by Russia on Wed, 19 Jan 2022 14:35:43 +0100

In depth understanding of TabNet: detailed architecture and classification code implementation

TabNet released by Google is a neural network for tabular data. It realizes instance wise feature selection through sequential attention mechanism similar to additive model, and realizes self-supervised learning through encoder decoder framework.Table data is the most commonly used data type in daily life. For example, credit card fraud detecti ...

Posted by SuNcO on Wed, 19 Jan 2022 13:18:00 +0100

KNN algorithm (with iris classification Implementation)

​ 1.k-nearest neighbor algorithm K-Nearest Neighbor learning (KNN) learning is a commonly used supervised learning method. Its working mechanism is very simple: given a test sample, find the K samples closest to it in the training set based on a certain distance measurement, and then predict through the k neighbor samples. If there are many n ...

Posted by nick2005 on Wed, 19 Jan 2022 04:19:54 +0100

Use mask RCNN in Detectron2 to detect building contour

preface    I tried a lot of frameworks and algorithms. From software to code, there were many problems, from ArcGIS Pro to mask RCNN of Tensorflow to Detectron2. Target detection and segmentation Target segmentation    building contour extraction belongs to a kind of target segmentation (instance segmentati ...

Posted by Satanas on Tue, 18 Jan 2022 11:28:51 +0100

Machine learning - ensemble learning

1, Integrated learning Ensemble learning is a method to combine multiple weak machine learners to build a machine learner with strong performance, that is, to complete the learning task by constructing and merging multiple learners. The weak learners constituting ensemble learning are called base learners and base estimators. 1. According to ...

Posted by alvinchua on Tue, 18 Jan 2022 08:36:22 +0100

Experiment 3 of machine learning and data mining in Guangzhou University

Experimental trimer analysis 1, Experimental purpose This experimental course is a professional course for students majoring in computer, artificial intelligence and software engineering. Through experiments, it helps students better master the concepts, technologies, principles and applications related to data mining and machine learning; Imp ...

Posted by mattsinclair on Tue, 18 Jan 2022 04:36:35 +0100

11. Integrated learning practice

API parsing AdaBoost algorithm (reduction coefficient needs to be added to solve the problem of infinite amplification caused by abnormal data, resulting in error) parameter AdaBoostClassifier AdaBoostRegressor base_estimator Weak classifier object, the default is CART classification tree DecisionTreeClassifier; Weak regressor object, the ...

Posted by DocUK on Mon, 17 Jan 2022 23:56:47 +0100

Machine learning notes 1-0: Regression

*Note: this blog refers to Mr. Li Hongyi's 2020 machine learning course Video link Regression Model Regression model is used to obtain a mapping relationship between input data and output data y = ...

Posted by ram4nd on Mon, 17 Jan 2022 17:37:05 +0100