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Showing posts from October, 2023

Python Libraries used in Astronomy

Machine learning libraries in astronomy are software libraries that provide tools and functions for building and implementing machine learning models to analyze astronomical data. These libraries typically include a variety of features, such as: Data loaders: These loaders can read in astronomical data from a variety of formats, such as FITS, HDF5, and CSV. Preprocessing functions: These functions can be used to clean and prepare astronomical data for machine learning. Machine learning algorithms: These algorithms can be used to train and evaluate machine learning models for a variety of tasks, such as classification, regression, and clustering. Visualization tools: These tools can be used to visualize the results of machine learning models. Here are some of the most popular machine learning libraries in astronomy: AstroML: AstroML is a Python library for machine learning and data mining in astronomy. It provides a variety of tools and functions for analyzing ast...

AI in Astronomy

Artificial intelligence (AI) is helping astronomers in a number of ways, including: Analyzing vast amounts of data: Astronomy produces enormous amounts of data, from images and spectra to light curves and radial velocity measurements. AI algorithms can quickly and accurately analyze this data, identifying patterns and trends that would be difficult or impossible for humans to find on their own. Automating tasks: AI can be used to automate many of the repetitive tasks involved in astronomical research, such as identifying and classifying objects in images, measuring their properties, and extracting data from spectra. This frees up astronomers to focus on more creative and strategic work. Making new discoveries: AI is helping astronomers to make new discoveries in a number of areas, including the search for exoplanets, the study of dark matter and dark energy, and the understanding of the early universe. For example, AI algorithms have been used to identify new exop...

Feature Scaling In Machine Learning!

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    Feature Scaling is a technique of bringing down the values of all the independent features of our dataset on the same scale . Feature scaling helps to do calculations in algorithms very quickly. It is the important stage of data preprocessing. If we don't do feature scaling then the machine learning model gives higher weightage to higher values and lower weightage to lower values. Also, takes a lot of time for training the machine learning model.After doing feature scaling, we can conveniently train our models and draw predictions. Types of Feature Scaling Normalization Normalization is a scaling technique in which the values are rescaled between the range 0 to 1 . To normalize our data, we need to import MinMaxScalar from the Sci-Kit learn library and apply it to our dataset. After applying the MinMaxScalar, the minimum value will be zero and the maximum value will be one. 2. Standardization Standardization is another scaling technique in which the mean will be eq...
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                                                          Ensemble Models   T he Ensemble technique is one of the most fundamental algorithms for classification and regression in the Machine Learning world. In the election, we know that the candidate would win when they get a maximum number of votes i.e majority of votes. The Ensemble technique has a similar underlying formula where we aggregate predictions from a group of predictors (models), which may be classifiers or regressors, and most of the time the prediction is better than the single predictor. Such algorithms are called Ensemble methods and such predictors are called Ensembles. The Ensemble technique is a combination of multiple models , ...
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  In this blog, we will see, What are Nominal Encoding and Ordinal Encoding in the Data Science domain. When we are working on some of the datasets, we found that some of the features are categorical. We all know that machines can’t understand categorical data. Models only work with numerical values. For this reason, it is necessary to convert the categorical values of the features into numerical ones, So the machine can learn from those data and gives the right model. This process of converting categorical data into numerical data is called Encoding . There are two most popular types of encoding, Nominal Encoding When we have a feature where variables are just names and there is no order or rank to this variable's feature. For example: City of person lives in, Gender of person, Marital Status, etc… In the above example, We do not have any order or rank, or sequence. All the variables in the respective feature are equal. We can't give them any orders or ranks. Those...