Programmer Think

Catalogue of series articles Near infrared spectroscopy is a cross cutting field, which requires cooperation in chemistry, computer science, bioscience and other fields. To this end, Under the guidance of (teacher Yang Huihua team of Beijing University of Posts and Telecommunications), we will prepare to open source the traditional classical a ...

K-Nearest Neighbor Classification Algorithm Case My friend Helen has been using the online dating website to find the right person for her. Although dating websites recommend different people, she doesn't find anyone she likes. After some summary, she found that she has met three types of people: "people who don't like it", "peop ...

working space src code space build compilation space devel development space Install install control Create workspace The workspace is created by catkin in the src directory_ init_ workspace mkdir -p ~/catkin_ws/src // Create directory - p create multi-level directory in one row cd ~/catkin_ws/src // Switch to ~ / catkin_ws/src ...

Introduction to Robosense Sagitar lidar drive file parameters Before reading this article, please study the following article The use of Robosense in LIOSAM, And install and compile the driver. The Robosense driver file has only one parameter file, config Yaml, stored in rslidar_sdk/config folder. The whole parameter file can be divided into t ...

Machine learning DAY05 Grid search The way to obtain an optimal super parameter can draw the verification curve, but the verification curve can only obtain one optimal super parameter at a time. If there are many permutations and combinations of multiple hyperparameters, grid search can be used to find the optimal hyperparameter combination. ...

PIL(Python Image Library) PIL(Python Image Library) is a free image processing toolkit provided by Python ware. Because of its powerful functions, it is already the de facto image processing standard library of Python platform. PIL is very powerful and provides many image processing functions, such as changing image size, rotating image, imag ...

Event background Broad and profound China culture has a long history, and idioms are the cream of China's culture. Idioms are mostly composed of four words, usually with allusions or sources. Some idioms are not difficult to understand literally, such as "making a mountain out of a molehill", "catching up from behind" and s ...

I wrote the last blog in 2021 and the first blog in 2022 at 23:04 on December 31, 2021. This year's motto: if there is a heat and a light, it will make a firefly. You can also make a light in the dark. You don't have to wait for the torch. After that, if there is no torch, I will be the only light. Introduction A few days ago, I ...

Original link: http://tecdat.cn/?p=24896Beautiful circle chart. I'm not sure if there is any additional benefit to the data analyst itself, but if it can attract the attention of decision makers, it is additional value to me.However, with coord\_polar() or coord in ggplot2 found occasionally\_ Radar () can be difficult to build. The two main pr ...

1, Basic principles Ensemble learning completes the learning task by constructing and combining multiple learners, so as to improve the generalization and stability performance better than a single learner. To achieve good integration effect, individual learners should be "good and different". According to the generation mode of indi ...