PERSOLKELLY Interview Questions and Answers

Object oriented programming is a programming paradigm that uses objects to represent and manipulate data.

• Objects encapsulate data and behavior

• Classes define the blueprint for objects

• Inheritance allows for code reuse and polymorphism

• Examples include Java, C++, and Python

Program to find numbers divisible by 3 in a string and reverse their indexes.

• Iterate through the string and check if each character is a number divisible by 3.

• Store the divisible numbers in an array and reverse their indexes.

• Join the array back into a string and return the result.

Sonarqube is a static code analysis tool used to detect code smells and bugs in code. It is integrated into CI/CD pipelines for continuous code quality checks.

• Sonarqube is a static code analysis tool that identifies code smells, bugs, and security vulnerabilities in code.

• Code smells are common programming issues that may indicate a deeper problem in the code. Examples include duplicated code, long methods, and complex conditionals.

• Sonarqube can be integrated into CI/CD pipeli...read more

Hyperparameters of SVM can be tuned using techniques like grid search, random search, and Bayesian optimization.

• Grid search involves defining a grid of hyperparameter values and evaluating the model performance for each combination.

• Random search randomly selects hyperparameter values from a defined range and evaluates the model performance.

• Bayesian optimization uses a probabilistic model to select the next set of hyperparameters based on previous evaluations.

• Cross-validation ...read more

Data annotation is the process of labeling or tagging data to make it understandable and usable for machine learning algorithms.

• Data annotation involves adding metadata or annotations to data.

• It helps in training machine learning models by providing labeled examples.

• Common types of data annotation include image labeling, text tagging, and audio transcription.

• Data annotation can be done manually by human annotators or through automated tools.

• Examples of data annotation tasks i...read more

AI stands for Artificial Intelligence, which is the simulation of human intelligence in machines.

• AI involves the development of computer systems that can perform tasks that would typically require human intelligence.

• It encompasses various subfields such as machine learning, natural language processing, and computer vision.

• AI is used in various applications like virtual assistants, autonomous vehicles, and recommendation systems.

• Examples of AI technologies include IBM's Watson...read more