Data Analysis and Machine Learning Techniques with Python
1. California Housing Dataset: EDA and Outlier Analysis
Importing Libraries and Loading Data
The following libraries are imported for data manipulation, visualization, and dataset loading:
import matplotlib.pyplot as plt
import pandas as pd
import seaborn as sns
from sklearn.datasets import fetch_california_housing
california = fetch_california_housing(as_frame=True)
df = california.frame
Identifying Numerical Features
numerical_features = df.select_dtypes(include=['number']).columns
Visualizing Data
Read MoreComputer Networking Fundamentals: Protocols, Topologies, and Media
Computer Networks: Definition and OSI Model’s Open Nature
A computer network is a collection of interconnected computers and other hardware devices that are linked together to share resources, exchange data, and communicate. These networks can be connected via wired (e.g., Ethernet) or wireless (e.g., Wi-Fi) means. The main purpose of a computer network is to enable devices to work together, share files, access the internet, and use shared applications or hardware like printers.
Why the OSI Model
Read MoreJava AWT, JDBC, Servlet Essentials: Controls, Layouts, and More
AWT Controls: Label, Button, TextField
AWT (Abstract Window Toolkit) is Java’s GUI toolkit used to create graphical user interfaces. It provides basic UI components like buttons, labels, text fields, etc.
1. Label:
- A Label is a non-editable text element used to display a single line of read-only text.
- It does not accept user input.
- Mainly used to identify other GUI components.
2. Button:
- A Button is a clickable component used to perform an action.
- It generates an ActionEvent when clicked.
- Useful in performing
Java File I/O and Collections Framework Essentials
Java File Operations with RandomAccessFile
The RandomAccessFile class in Java is part of the java.io package and provides functionality for reading from and writing to a file at any specified position. Unlike sequential input/output streams, RandomAccessFile allows non-sequential access to file contents, making it suitable for tasks like updating specific parts of a file or working with structured data records.
RandomAccessFile Example: Reading, Writing, and Appending
This example demonstrates how
Read MorePython Image Processing: Core Techniques with OpenCV
This document demonstrates various fundamental image processing techniques using Python libraries such as OpenCV, NumPy, and Matplotlib. Each section provides a code example and a brief explanation of the concept.
Image Transformations
Image transformations involve altering the spatial arrangement of pixels within an image. This section covers common transformations like rotation, scaling, and translation.
Rotation (45° Around Center)
Rotation transforms an image by turning it around a central point.
Read MoreMolecular Biology and Bioinformatics Principles
I. Molecular Biology Fundamentals
Genes and Genomes
Every cell contains a complete set of genetic instructions—the genome—encoded in DNA and organized into genes packaged on chromosomes. A gene is a specific DNA sequence that encodes a functional product (usually a protein or an RNA). Genetic variation (mutations) underlies phenotypic differences, while environmental factors also contribute to traits.
DNA vs. RNA
| Feature | DNA (Deoxyribonucleic Acid) | RNA (Ribonucleic Acid) |
|---|---|---|
| Sugar | Deoxyribose (no 2′–OH |