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Top 10 AI Models/Algorithms

Introduction

Technology has undergone significant advancements in recent years, introducing various applications and inventions. In the past, people would have had to adjust antennas and adjust the antenna to watch live cricket broadcasts. Today, people can watch matches from anywhere with their laptop, computer, or smart TV. This drastic change and technological reform has led to the development of Artificial Intelligence (AI), a milestone in the road to the future.

Artificial Intelligence

Artificial Intelligence (AI) is the emulation of human intellect in computers trained to think and act like humans. Its ideal feature is its ability to rationalize and execute actions with the highest probability of achieving a given objective. Machine learning is a subset of AI that allows computer systems to learn from data and adapt without human intervention. AI works on various algorithms to make human life easier. AI models aim to find a function that offers the most exact correlation between input and output variables.

All AI models strive to discover a function (f) that offers the most exact correlation between input and output variables (x) (y). Y=f(X)

For example, an AI model can find the optimal mapping between historical data and forecast new Y using new X, providing predictive analytics. This blog will focus on the Top-10 AI concepts or algorithms for beginners.

AI Algorithms

 

1. Linear Regression

Linear regression, a mathematical statistical technique, has been used for over 200 years to find the most influential coefficients on the accuracy of a function. Data scientists can achieve different training outcomes by changing the weight of these factors. Clear data with minimal noise and correlated input values are crucial for success. This technique is used in various industries for gradient descent optimization of statistical data.

y= B0 + B1 * x is the simplest example, where B0 + B1 is the function in question.

Fig 1 – Linear Regression

 

2. Logistic Regression

Logistic regression is an AI method that can predict binary outcomes and identify two y value classes. It uses a non-linear logic function to transform the output, separating true and false values. Similar to linear regression, it eliminates input samples with the same value and reduces noise. This basic function is quick to learn and is ideal for binary categorization, making it a suitable choice for classification.

 

3. Linear Discriminant Analysis(LDA)

When there are more than two classes in the output, this branch of the logistic regression model can be employed. This model calculates statistical characteristics of the data, such as the mean value for each class separately and the total variance averaged for all classes.

The predictions allow for the calculation of values for each class and the identification of the most valuable class. The data must be distributed according to the Gaussian bell curve for this model to be valid, thus all large outliers should be eliminated beforehand. The LDA algorithm of AI is a fantastic and straightforward approach for data categorization and predictive modeling.

4. Decision Trees

This is one of the most widely utilized, simplest, and efficient AI algorithms available. It’s a traditional binary tree, with a Yes/No decision at each split until the model reaches the outcome node.

This approach is easy to understand, does not need data standardization, and may be used to address a variety of issues.Learn more about decision trees from the link.

 

5. Naive Bias

It is a simple, yet really strong AI algorithm for solving a variety of complex problems. It is capable of calculating two sorts of probabilities:

  • The probability of each class occurring.

  • For a standalone class with an additional x modifier, a conditional probability.

The model is referred to as naïve since it is based on the assumption that all of the input data values are unrelated. While this is not possible in the actual world, this basic technique may be used in a variety of normalized data flows to accurately anticipate results.

 

6. K-Nearest Neighbors

This is a basic yet effective AI algorithm that uses the entire training dataset as the representation field. The outcome value predictions are produced by searching the whole data set for K data nodes with comparable values (so-called neighbors) and determining the resulting value using the Euclidean number (which can be readily computed based on the value differences).

Such datasets can use a lot of computational resources to store and analyze the data, suffer from accuracy loss when numerous characteristics are present, and must be curated regularly. They are, nevertheless, incredibly quick, precise, and efficient when it comes to discovering the required values in huge data sets. You can learn more about how KNN works in Machine Learning from here.

7. Learning Vector Quantization

The single significant disadvantage of KNN is the requirement to maintain and update large datasets. Learning Vector Quantization, or LVQ, is an advanced KNN model, a neural network that defines training datasets and codifies necessary outcomes using codebook vectors.

As a result, the vectors are initially random, and the learning process entails changing their values to enhance prediction accuracy and consequently, locating the vectors with the most comparable values yields the best level of accuracy in predicting the end value.

 

8. Support Vector Machines

This AI algorithm is one of the most extensively discussed among data scientists because it offers extremely robust data categorization skills. The so-called hyperplane is a line that divides data input nodes with different values, and the vectors from these points to the hyperplane can either support it (when all data instances of the same class are on the same side of the hyperplane) or defy it (when all the data instances of the same class are on opposite sides of the hyperplane) when the data point is outside the plane of its class.

The hyperplane having the most positive vectors and separating the most data nodes would be the best. SVM is a very sophisticated classification machine that may be used to solve a variety of data normalization issues.

9. Random Decision Forests or Bagging

Random decision forests are made up of decision trees that evaluate many samples of data and aggregate the findings like putting many samples in a bag to get the most accurate output value.

Rather than identifying a single ideal route, many inferior paths are specified, resulting in a more precise overall outcome. If decision trees solve your problem, random forests are a variation of the method that yields even better results.

 

10. Deep Neural Networks

DNNs are one of the most used AI and machine learning algorithms. Deep learning-based text and voice apps, deep neural networks for machine perception and OCR, as well as employing deep learning to enhance reinforced learning and robotic movement, as well as other DNN applications, have all seen substantial advances.

Fig 2: Neural Network Architecture

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