NumPy | Ecosyste.ms: Awesome

https://github.com/louisblankemeier/numpytex

Latex script generator that generates an aesthetically appealing table using a numpy array.

Last synced: 07 May 2026

https://github.com/r-mahesh45/reccomendation-system

This project involves building a recommender system using cosine similarity to measure the similarity between items or users. It leverages numerical data to provide personalized recommendations. The model focuses on extracting meaningful insights and improving decision-making processes.

numpy pandas-dataframe python3 scikitlearn-machine-learning

Last synced: 07 May 2026

https://github.com/ksharma67/intel-stock-predication-wiith-eda

We are trying to design a model that can predict the price of stock using different methods and algorithms.

eda linear-regression machine-learning-algorithms matplotlib numpy pandas prediction python scaler seaborn skit-learn

Last synced: 02 May 2026

https://github.com/navid-kalaei/numpy-neural-network

Neural network implemented in Numpy to predict bike sharing on real data

deep-learning neural-network numpy python

Last synced: 07 May 2026

https://github.com/kkkooolllyyyaaa/computational_math

computational-mathematics mathematics matplotlib numerical-methods numpy

Last synced: 07 May 2026

https://github.com/baranovserv/h-s-diagram

Парсер данных построения H-S диаграммы для веществ

diagrams json matplotlib numpy parser requests

Last synced: 02 May 2026

https://github.com/maliksaqib786/codealpha_projectname

IRIS CLASSIFICATION | Internship Project at Code Alpha

data-science logistic-regression machine-learning matplotlib numpy pandas python scikit-learn seaborn

Last synced: 10 Apr 2026

https://github.com/vermenea/masters---ad-signaling-pathway-using-hsp90-inhibitor

Influence of 17-AAG a Hsp90 inhibitor on signaling pathway in Atopic Dermatitis

matplotlib numpy pandas python seaborn statmodels

Last synced: 02 May 2026

https://github.com/veronicaldfaria/bootcamp-data-analytics

numpy pandas

Last synced: 02 May 2026

https://github.com/lyubov0406/data_analyst_portfolio

В репозитории собраны пет-проекты, демонстрирующие мои навыки в аналитике данных

data-analysis matplotlib numpy pandas portfolio python scipy seaborn sql tableau visualization

Last synced: 09 Apr 2026

https://github.com/harsha-yuvaraj/data-compression-and-decompression-tool

A specialized lossless file compression and decompression tool designed mainly for plain text, including programming files.

data-structures huffman-compression-algorithm lossless-compression-algorithm numpy python tkinter

Last synced: 15 Apr 2026

https://github.com/manishkr1754/loan_eligibility_prediction_python

Predict Loan Eligibility for a Finance company

bivariate-analysis data-visualization decision-trees evaluation-metrics exploratory-data-analysis feature-engineering hypothesis-generation logistic-regression matplotlib model-building numpy pandas random-forest seaborn sklearn univariate-analysis xgboost

Last synced: 08 May 2026

https://github.com/subhrajit77/ai-ml

My personal AI/ML projects repository

jupyter numpy pandas python

Last synced: 09 Mar 2026

https://github.com/ifte-13/digit-classification-with-mnist

MNIST Digit Classification: Comparative Analysis of Optimization Algorithms

matplotlib mnist-dataset numpy tensorflow

Last synced: 02 May 2026

https://github.com/vuanhtuan1012/data-scientist-with-python

Notes on career track "Data Scientist with Python" at DataCamp

importing-data matlab numpy pandas python3 sqlalchemy

Last synced: 09 Apr 2026

https://github.com/reddyprasade/bird-classifications-problem

Birds Classification by using Scikit-learn and Scikit-image

matplotlib numpy pandas python-3 sckiit-learn sckit-image

Last synced: 08 May 2026

https://github.com/kostadinlambov/the-galois-field-in-cryptography

This project is about Galois fields, what properties they have and how they can be used in cryptography.

aes-encryption asymmetric-cryptography encryption-decryption extension-fields finite-fields galois-fields numpy prime-fields python symmetric-cryptography

Last synced: 08 May 2026

https://github.com/hadjuse/spotify-recommendation-knn

Here is a personal project where i use KNN project to classify songs

data-science graphics interpretation knn-classification machine-learning matplotlib music numpy plotly spotify

Last synced: 03 May 2026

https://github.com/djdurga/predictive_analysis_in_diabetes

This project applies Logistic Regression to predict diabetes in patients using the Pima Indians Diabetes Dataset. It covers the full data science lifecycle — from data imputation and exploration to model training, evaluation, and insights.

matplotlib numpy pandas

Last synced: 08 May 2026

https://github.com/badranalyst/movie-correlation-analysis-in-python

This project analyzes movie data correlations using Python libraries like Pandas, NumPy, Seaborn, and Matplotlib. It examines relationships between attributes such as ratings, genres, and box office performance to uncover trends that inform recommendations and enhance understanding of movie success factors.

data data-analysis dataset jupyter jupyter-notebook matplotlib matplotlib-pyplot numpy pandas python seaborn

Last synced: 03 May 2026

https://github.com/abdullah-masood-05/eye-balll-detection

This repository provides advanced eye gaze tracking using MediaPipe Face Mesh for both video files and live camera feeds.

mediapipe numpy opencv scipy

Last synced: 10 Apr 2026

https://github.com/helenaden/data-science-fundamentals

This project delves into fundamental data science concepts using Python libraries like NumPy and Pandas

data-analysis datascience datasets datavisualization datawrangling heatmap numpy pandas patterns python

Last synced: 03 May 2026

https://github.com/bhavna-kale/cars-eda-project

Project analyzing used car market data to identify high-impact price drivers and depreciation curves, presented through an interactive web application.

data-analysis excel matplotlib numpy pandas python3 searborn streamlit

Last synced: 03 May 2026

https://github.com/krumyakimov/house-price-developments-in-bulgaria

I developed this project for my final exam in the Data Science course at SoftUni.

data-science jupyter-notebook matplotlib numpy pandas scipy seaborn

Last synced: 03 May 2026

https://github.com/isinghabhishek/data_analysis_with_python

Introduction to Data Analysis covering the basics of Python, Numpy, Pandas, Data Visualization, and Exploratory Data Analysis.

data-visualization exploratory-data-analysis numpy pandas python

Last synced: 03 May 2026

https://github.com/raduldev/biopython

Biopython Record Work and few extra coding excercise

bioinformatics biopython gromacs jupyter-notebook matplotlib numpy pandas python3

Last synced: 03 May 2026

https://github.com/moonshallow5/food_vision_mini

A program which can detect if an image contains either a pizza, sushi or steak: Has now been deployed on Flutter :)

huggingface matplotlib numpy pytorch

Last synced: 09 May 2026

https://github.com/kisaa-fatima/foreground-segmentation-using-kmeans-face-recognization-using-knn

Implement a basic version of the interactive image cut-out/segmentation approach called Lazy Snapping. The program uses K-Means Clustering to segment images into foreground and background based on user-provided seed pixels.

face-recognition foreground-segmentation kmeans-clustering knn-classification matplotlib numpy opencv2 pil

Last synced: 03 May 2026

https://github.com/alexbie98/bietorch

neural nets with numpy

autograd neural-nets numpy torch

Last synced: 03 May 2026

https://github.com/chethannazre/railway-track-obstacle-detection-system

RAILWAY TRACK OBSTACLE DETECTION AND AUTOMATION (RAILTECH AUTOMATION)

automation cv2-library internship numpy ppt project python report

Last synced: 03 May 2026

https://github.com/tinaland101/carcinoma-regression-project

The goal of this project is to analyze and visualize the results of a clinical study involving the treatment of squamous cell carcinoma (SCC) in mice. As a senior data analyst, you are tasked with preparing a technical report for Pymaceuticals, Inc.

linear-regression mathplotlib numpy pandas pyhton

Last synced: 08 May 2026

https://github.com/jupfu/beck-view-digitalize

Digitalize 16mm films with Python & reactivex & FT232H

cython ft232h libpng multiprocessing numpy opencv python3 reactivex um232h

Last synced: 09 May 2026

https://github.com/fandredev/ml-my-guide

my own annotations about ML/DS using pandas, matplotlib, numpy, scikit learn

anaconda matplotlib numpy pandas plotly scikit-learn seaborn

Last synced: 03 May 2026

https://github.com/azaz9026/python_library_numpy

NumPy is a Python library used for working with arrays. It also has functions for working in domain of linear algebra, fourier transform, and matrices...

array jupyter-notebooks numpy python3

Last synced: 08 May 2026

https://github.com/layonj3000/libras-recognition

This project is a Brazilian Sign Language (LIBRAS) recognition system that utilizes computer vision and machine learning techniques.

computer-vision libras mediapipe numpy opencv python random-forest-classifier

Last synced: 03 May 2026

https://github.com/khushi130404/k_means

This repository showcases 2D, 3D, and custom K-Means clustering models with visualizations. It includes both Jupyter notebooks and Python scripts for ease of reproducibility.

clustering-algorithm k-means-clustering numpy plotly sklearn

Last synced: 08 May 2026

https://github.com/k-ilyas/ai-projects-handwritten-digit-recognition-titanic-survivor-analysis

AI Projects: Handwritten Digit Recognition & Titanic Survivor Analysis using scikit-learn

machine-learning numpy pandas sickit-learn

Last synced: 03 May 2026

https://github.com/haimgoldfisher/data_visualization_final_project

Final project of the Data Visualization course, Ariel university.

adaboost bayesian-learning catboost ensemble-learning gradient-boosting gridsearchcv matplotlib numpy pandas plotly seaborn semi-supervised-learning voting-classifier

Last synced: 08 May 2026

https://github.com/magnitopic/data-science-journey

data-science jupyter-notebook numpy python statistics

Last synced: 12 Apr 2026

https://github.com/djdhairya/wine-quality-detetction

csv data-science datacollection datapreprocessing datavisualization heatmap machine-learning model numpy pandas random-forest

Last synced: 08 May 2026

https://github.com/rsc-88/titanic

Data Science

jupyter-notebook numpy pandas python

Last synced: 08 May 2026

https://github.com/shailikadakia/yoga-pose-accuracy-detector

Real-time yoga pose accuracy detector using MediaPipe and OpenCV. Classifies poses from webcam input with KNN and provides feedback on duration and accuracy, built with Python and scikit-learn.

computer-vision fitness health-tech knn machine-learning mediapipe numpy opencv pandas pose-estimation python real-time-detection yoga

Last synced: 09 Apr 2026

https://github.com/aliakbar-omidi/iris-practice-project

This project is a test modeling for the Iris flower dataset

decisiontreeclassifier gridsearchcv iqr numpy pandas pca sklearn-decomposition sklearn-metrics

Last synced: 03 May 2026

https://github.com/chandkund/loan-eligibility-prediction

This project is designed to predict the eligibility of loan applicants based on various factors such as income, credit history, and marital status. By analyzing historical loan application data, the model helps to determine whether a loan application should be approved or not.

data-analysis data-science data-visualization machine-learning-algorithms matplotlib numpy pandas python seaborn

Last synced: 09 Apr 2026

https://github.com/algoscienceacademy/imageprocessingpython

Image processing python code

matplotlib numpy pathlib pil python scipy seaborne

Last synced: 03 May 2026

https://github.com/thiagonunesbatista/deuteranopia-simulator-computer-vision-python

Live color detection with a webcam and a simulation of deuteranopia's color perception effects.

computer-vision numpy opencv python

Last synced: 03 May 2026

https://github.com/hansalemaos/a_pandas_ex_fastloc

Up to 25 times faster than df.loc by combining np.select and numexpr.evaluate (works with utf-8)

dfloc fast iloc loc numexpr numpy pandas python

Last synced: 03 May 2026

https://github.com/farhannaeem00/data-visualization-practice

Learning matplotlib fundamentals - seeking feedback and code reviews

jupyter matplotlib numpy pandas python

Last synced: 03 May 2026

https://github.com/ebrahimar/ai-voice-cloner-xtts-v2

A Streamlit web app for AI-powered voice cloning using Coqui XTTS v2. Record or upload reference voices, clone speech in multiple languages, and generate natural audio outputs.

ai-voice coqui-tts deep-learning json multilingual-tts numpy pydub python speech-synthesis streamlit text-to-speech tts-model voice-cloning xtts-v2

Last synced: 03 May 2026

https://github.com/nak-dt/deep-decision-forest

A custom ensemble tree model inspired by Deep Forest

ai machine-learning machine-learning-algorithms numpy pandas python sklearn

Last synced: 03 May 2026

https://github.com/abhijais4896/cardiovascular-disease-prediction

Cardiovascular Disease Prediction using machine learning and Python

data-analysis datascience deep-learning machine-learning matplotlib numpy pandas python seaborn visualization

Last synced: 03 May 2026

https://github.com/prathicashettym/machinelearningalgorithms

Contains mini projects and implementation using ML algorithms

jupyter-notebook linear-regression matplotlib numpy pandas panfas python seaborn

Last synced: 03 May 2026

https://github.com/crispengari/numpy

💎 The core concept of numpy arrays

ai artificial-intelligence datascience jupyter-notebook machine-learning numpy python

Last synced: 03 May 2026

https://github.com/sadmanca/imdb-scraper

Scrapes IMDb's movie database and outputs the data to CSV files.

beautifulsoup data-scraping imdb numpy pandas python requests

Last synced: 03 May 2026

https://github.com/jsnevt/decisiontreecls

Data Science - Árvores aleatórias - RandomForestClassifier

decision-tree-classifier matplotlib numpy pandas seaborn

Last synced: 03 May 2026

https://github.com/mzayles/data-preparation.py

Curso Programação em Python para Data Science | Preparando e tratando dados de uma base de vendas com Pandas e NumPy.

numpy pandas python

Last synced: 03 May 2026

https://github.com/katerynazakharova/machine-learning

Example of a ML algorithm.

gradient-boosting-classifier gridsearchcv machine-learning ml numpy pandas python3

Last synced: 03 May 2026

https://github.com/codeslash21/tmdb_data_analysis

We analysed TMDB dataset which contains around 11000 movies details. We analyzed to find some interesting facts about the dataset.

data-analysis data-visualization matplotlib nanodegree-project numpy pandas python tmdb-movie

Last synced: 03 May 2026

https://github.com/shreenidhi7700/auto_price_prediction

We are required to use Machine Learning algorithms to predict the price of cars with the available independent variables such as Horsepower, no-of-cylinders, engine-type, city_mpg, highway_mpg etc.

decision-tree-regression ensemble knn-regression linear-regression machine-learning-algorithms matplotlib-pyplot numpy pandas python3 random-forest-regression regression seaborn xgboost-regression

Last synced: 04 May 2026

https://github.com/akhil-krishnan-r/super_market_analysis

The growth of supermarkets in most populated cities are increasing and market competitions are also high. This dataset is one of the historical sales of supermarket company which has recorded in 3 different branches for 3 months data. Predictive data analytics methods are easy to apply with this dataset

data-visualization matplotlib numpy pandas seaborn

Last synced: 03 May 2026

https://github.com/mttgdd/openfabmap-python3

Pybind11 and numpy array bindings to openFABMAP

cpp numpy openfabmap pybind11 python robotics vision

Last synced: 08 May 2026

https://github.com/vinicius999/icu-beds-forecast-covid-19

Predição da ocupação de leitos de UTI no Brasil devido a pandemia do COVID-19, usando Support Vector Regression (SVR)

covid-19 matplotlib numpy pandas python sklearn support-vector-regression

Last synced: 03 May 2026

https://github.com/furk4nbulut/uygulamalarla-makine-ogrenmesi-ve-derin-ogrenme-atolyesi

Bu repository, Manisa'da gerçekleştirilen BTK Akademi Uygulamalı Makine Öğrenmesi ve Derin Öğrenme Atölyesi'ne ait eğitim sürecini kapsamaktadır. Atölyede katılımcılar, ileri düzey makine öğrenmesi ve derin öğrenme teknikleriyle ilgili teorik ve pratik bilgiler edinmektedir.

matplotlib numpy pandas scikit-learn seaborn

Last synced: 03 May 2026

https://github.com/kaustavmodak/business-aided-customer-feedback-assessment-system

A Streamlit-based sentiment analysis app that classifies customer reviews into Positive, Neutral, or Negative using a pre-trained ML mode

framework machine-learning matplotlib nlp nltk numpy pandas pickle regex scikit-learn seaborn sentiment-analysis streamlt tfidf-vectorizer

Last synced: 03 May 2026

https://github.com/pramodyasahan/binary-classifier

This repository houses the code for a machine learning model designed to predict customer churn. The model is built using Support Vector Machine (SVM) from the scikit-learn library and incorporates preprocessing, pipeline, and grid search techniques for optimal performance.

numpy pandas scikit-learn

Last synced: 03 May 2026

https://github.com/carol-neto/sprint-9-making-data-driven-business-decisions

In this project I evaluate hypotheses using ICE and RICE and perform A/B testing analysis.

abtesting dataanalysis hypothesis-testing matplotlib numpy pandas python scipy-stats seaborn

Last synced: 03 May 2026

https://github.com/jonad/finding_donors

Predicting income with UCI Census Income Dataset using supervised machine learning algorithms

numpy pandas scikit-learn scikitlearn-machine-learning

Last synced: 03 May 2026

https://github.com/zongxr/dcic2025-riverwaterprediction

闽江，福建省最大独流入海河流，流域降水丰沛。在新型电力系统和新阶段水利高质量发展的环境下，如何缓解流域防汛压力，提升水资源利用率是水电企业高质量发展的重中之重。目前，基于传统水文学原理已实现未来9小时甲级精度的洪水预报，但存在遇见期与预见精度上仍有提升空间，因此，通过结合人工智能技术实现流域入库流量的精准预测，对保障水库安全调度、防洪及清洁能源稳定供应具有重大战略意义。

lightgbm machine-learning numpy pandas sklearn time-series xgboost

Last synced: 03 May 2026

https://github.com/gama1903/digital_image_processing

Implementation of Basic Algorithms of Digital Image Processing mainly through Numpy.

digital-image-processing numpy opencv python

Last synced: 08 May 2026

https://github.com/muskanmi/data_analysis_python

Data analysis on students result dataset using python libraries.

boxplot countplots data-analysis numpy pandas pie-chart python3 seaborn

Last synced: 03 May 2026

https://github.com/manikantasanjay/youtube_exploratory_data_analytics

This is a Mini Project made using Python Libraries like Numpy, Pandas, Matplotlib etc to perform Data Analytics on US Video and Comments dataset.

jupyter-notebook matplotlib numpy pandas plotly python seaborn wordcloud

Last synced: 03 May 2026

https://github.com/veranyagaka/python

Everything Python

matplotlib mysql numpy oop-in-python pandasql python

Last synced: 03 May 2026

https://github.com/syed-m-nofel/python-data-science-fundamentals

Python notebooks for data manipulation (Pandas/NumPy) and API workflows – from basics to practical examples.

api beginner-friendly data-analysis data-science http-requests jupyter-notebook numpy pandas pandas-dataframe python tutorial

Last synced: 03 May 2026

https://github.com/lexxai/goit_python_ds_hw_03

Модуль 3. Класичне машинне навчання. Перенавчання. Лінійна регресія. LaTeX формули.

latex linear-regression matplotlib numpy pandas python scikit-learn

Last synced: 09 Apr 2026

https://github.com/ankitgmishra/machinelearning

Continuously deep diving in understanding & advancing my expertise in Machine Learning through ongoing education and hands on experience with practical learning.

artificial-intelligence data-analysis data-cleaning data-gathering machine-learning machinel-learning-algorithms matplotlib numpy pandas python seaborn

Last synced: 03 May 2026

https://github.com/lmizner/codecademy_product_defects

Practicing rules of probability, set theory, and distributions

cdf jupyter-notebook numpy pmf ppf python rvs scipy-stats

Last synced: 03 May 2026

https://github.com/asayda01/airport_operations_analytics

The project analyzes the performance of Hold Baggage Screening X-ray Machines, identifying trends in system load, bottlenecks, and operator efficiency. Using an interactive Streamlit app, users can explore data-driven insights to optimize airport screening processes and improve overall operational performance.

data-science dataanalysis datainsights datavisualization numpy pandas python streamlit

Last synced: 03 May 2026

https://github.com/alvii147/discretetimelib

Python library for analysis of discrete time signals and systems

numpy pandas scipy signals-and-systems sympy

Last synced: 03 May 2026

https://github.com/sreelekhakummetha/diabetes-prediction

"Flask web app for diabetes prediction using ML"

css dataset flask html joblib machine-learning numpy pandas scikitlearn-machine-learning

Last synced: 03 May 2026

https://github.com/coderooz/handwritten_digit_recognition

This project uses a Convolutional Neural Network (CNN) to recognize handwritten digits from the MNIST dataset. The model is built using TensorFlow and Keras.

colab handwritten-digit-recognition image-classification matplotlib neural-network numpy python tensorflow

Last synced: 03 May 2026

https://github.com/schukark/intervalpylib

Interval solver of systems of equations to find the workspace area of a robot

krawczyk matplotlib numpy python3 robotics solving-algorithm sympy systems-of-equations visualization

Last synced: 03 May 2026

https://github.com/hansalemaos/np_zoom_in

Zoom in on a picture

image numpy python zoom

Last synced: 03 May 2026

https://github.com/takana671/noisetexture

Generating noise texture images.

cellular-noise cython domain-warping fractal noise-textures numpy periodic-noise perlin-noise python3 simplex-noise tileable-noise value-noise voronoi

Last synced: 03 May 2026

https://github.com/feguedi/clasificador-numeros

Proyecto final de la materia de Inteligencia Artificial donde se desarrolla un software que pueda clasificar los números de la base de datos MNIST.

artificial-intelligence numpy python3

Last synced: 03 May 2026

https://github.com/momo790-m/startup-profit-prediction

Machine learning project to predict profits of new startups based on R&D, Admin, Marketing, and State data

assumptions business colab-notebook linear-regression machine-learning matplotlib numpy pandas preprocessing seaborn skit-learn sklearn

Last synced: 08 May 2026

https://github.com/nicolashaubricht/analise-dados-pib-per-capita

Este projeto tem como objetivo a análise de dados sobre as variações do PIB per capita em diversos países ao longo dos anos.

numpy pandas plotly python

Last synced: 03 May 2026

https://github.com/naritanara/tf-test

Mostres de ML i IA amb TensorFlow basades en els tutorials oficials per al PR

numpy python research-project tensorflow tensorflow-tutorials

Last synced: 03 May 2026

https://github.com/tasninanika/australian-credit-approval-analysis-svm

This project uses a Support Vector Machine (SVM) Classifier to predict whether a credit application is approved (1) or denied (0) based on applicant features.

numpy pandas python3 scikit-learn svm-classifier

Last synced: 10 Apr 2026

https://github.com/atchayaah/home-value-insights-kc

Data-driven project predicting King County housing prices using EDA, regression models, and ML techniques, developed as part of IBM’s Data Analysis with Python course on Coursera.

joblib matplotlib numpy pandas pickle python scikit-learn seaborn

Last synced: 03 May 2026

https://github.com/alphacrypto246/old-car-price-prediction

The Old Car Price Prediction project predicts used car prices using features like age, mileage, and fuel type. It includes data preprocessing, model training, and visualization of trends, with easy customization for additional features or models.

machine-learning numpy pandas scikit-learn scikitlearn-machine-learning

Last synced: 09 Apr 2026

https://github.com/joao-inacio/numpy-essencial-para-desenvolvedores-python

O curso foi elaborado para desenvolvedores Python que desejam explorar os recursos poderosos da biblioteca NumPy. Através de aulas práticas, eu vou adquirir as habilidades necessárias para trabalhar com arrays multidimensionais, realizar cálculos científicos complexos e manipular dados com eficiência.

array array-manipulations array-methods jupyter-notebook numpy python python3

Last synced: 03 May 2026

https://github.com/chdl17/imdb-assignment

This GitHub repository contains a project that performs an analysis of the IMDb movie rating dataset. The data is used to explore the relationships between various features and the movie rating. Visualizations are used to illustrate the results of the analysis. The code is organized into a Jupyter Notebook file and data files.

numpy pandas-dataframe python

Last synced: 08 May 2026

https://github.com/armahdavi/ml-xgboost-regressor---rapid-filter-forensics_rff-dust-recovery-from-hvac-filter

ML modelling of dust recovery from HVAC filters: Linear Regression vs. XGBoost - Project Milestone: 2017-2020.

linear-regression machine-learning matplotlib matplotlib-pyplot mpl-toolkits-mplot3d numpy pandas python seaborn seaborn-plots sklearn xgboost-regression

Last synced: 09 Apr 2026

https://github.com/dhruvil-26/python-projects

This repository contains Python projects showcasing data analysis and visualization. 1. IMDB Movie Analysis: Analyzing movie trends, genres, and ratings. 2. Loan Default Analysis EDA: Exploring factors contributing to loan defaults.

eda imdb-dataset loan-default-analysis matplotlib numpy pandas python seaborn visualization