- Auto-encoder: https://www.mathworks.com/help/deeplearning/ref/autoencoder-class.html
- Train auto-encoder: https://www.mathworks.com/help/deeplearning/ref/trainautoencoder.html
- DBSCAN: https://www.mathworks.com/help/stats/dbscan.html
- K-Means: https://www.mathworks.com/help/stats/kmeans.html
- Cluster data: https://www.mathworks.com/help/stats/clusterdata.html
Using pca to extract singular cross-section from mixed cross-sections
33 次查看(过去 30 天)
显示 更早的评论
I am tying to extract individual atmospheric cross-sections from a mixed cross-section made up of multiple species with pca. How do I do this and is pca the best option? I have tried pca, fastica and nnmf but all doesnt seem exactly what i want. pca outputs negative values for the principle components and then when reconstructing, each component is jus a variation of the input data rather than a unique part. ica and nnmf requires knowing the number of components before hand and again outputs negative or weird components. any help would be great
0 个评论
回答(1 个)
Subhajyoti
2024-12-6,9:43
It is my understanding that you are trying to extract individual atmospheric cross-sections from a mixed dataset.
Clustering algorithms like 'K-Means' or 'DBSCAN' can be used to group similiar datapoints together. These methods help in identifying and categorizing the natural groupings in data, if the components are distinct enough.
An 'autoencoder' might be beneficial in dimensionality reduction or feature learning. Autoencoders can learn efficient representations of your data, which can be useful for tasks like anomaly detection or data compression. You can experiment with different neural network-based autoencoders architectures to see if they can separate the components.
Refer to the following MathWorks Documentations to know about these methods:
另请参阅
类别
在 Help Center 和 File Exchange 中查找有关 Descriptive Statistics 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!