Teknorix Interview Questions and Answers

Neural networks are trained using algorithms that adjust the weights and biases of the network based on the input data and desired output.

• Neural networks are trained using a process called backpropagation, where the error between the predicted output and the actual output is used to adjust the weights and biases of the network.

• Training data is fed into the neural network, and the network's output is compared to the desired output to calculate the error.

• The error is then propa...read more

Hyperparameter tuning is the process of selecting the best set of hyperparameters for a machine learning model.

• Hyperparameters are parameters that are set before the learning process begins.

• Hyperparameter tuning involves adjusting hyperparameters to optimize the model's performance.

• Common techniques for hyperparameter tuning include grid search, random search, and Bayesian optimization.

Find missing number from nth number array.

• Iterate through the array and calculate the sum of all numbers

• Calculate the sum of numbers from 1 to n using the formula n*(n+1)/2

• Subtract the sum of array from the sum of numbers from 1 to n to find the missing number

Overfitting occurs when a machine learning model learns the training data too well, including noise and outliers, leading to poor generalization on new data.

• Overfitting happens when a model is too complex and captures noise in the training data.

• It can be identified when a model performs well on training data but poorly on unseen data.

• Techniques to prevent overfitting include cross-validation, regularization, and early stopping.

• For example, a decision tree with too many branch...read more

Find 2nd max element from array of strings

• Sort the array in descending order

• Skip the first element (max element)

• Return the second element

Inheritance is a concept in object-oriented programming where a class inherits properties and behaviors from another class.

• Inheritance allows a class to reuse code from another class.

• Types of inheritance include single inheritance, where a class inherits from only one parent class, and multiple inheritance, where a class inherits from multiple parent classes.

• Example: Class B inherits from Class A, so Class B can access all the properties and methods of Class A.

Polymorphism is the ability of a function or method to behave differently based on the object it is acting upon.

• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• It enables a single interface to be used for different data types or classes.

• Examples include method overloading and method overriding in object-oriented programming.