mobile-price-classification

Project Overview

The goal of this project is to develop classification model for dataset that hold specifications of 2000 mobile phones attempt to predict best price ranges by applying various machine learning algorithm.

Data description :

battery_power: Total energy a battery can store in mAh
blue: Has bluetooth or not
clock_speed: Speed at which microprocessor executes instructions
dual_sim: Has dual sim support or not
fc: Front Camera mega pixels
four_g: Has 4G or not
int_memory: Internal Memory in Gigabytes
m_dep: Mobile Depth in cm
mobile_wt: Weight of mobile phone
n_cores: Number of cores of processor
pc: Primary Camera mega pixels
px_height: Pixel Resolution Height
px_width: Pixel Resolution Width
ram: Random Access Memory in Megabytes
sc_h: Screen Height of mobile in cm
sc_w: Screen Width of mobile in cm
talk_time: Longest time that battery will last by a call
three_g: Has 3G or not
touch_screen: Has touch screen or not
wifi: Has wifi or not

Notebooks:

Included in this github are a jupyter notebooks folder containing:

EDA_Mobile_Price_Classification.ipynb :
- A notebook where I performed significant EDA to explore the variables.
Mobile_Price_Classification_ML.ipynb :
- I began with baseline models and continued through random forest, K nearest neighbor, Decision tree , and finally Stacking models.

Applyed Models :

The Process of work :

1. Exploratory Data Analysis

find if there is duplicated and null value and clean it.
visualize data and check if there is outlier.

the dataset is clear from null and duplicated values and the outlier looking normal

The first thing I did was take a look at the relationship between the feature

Here is the amount of each catogrical feature

Here we can see the amount of each catogrical feature with low cost 0

Here we can see the amount of each catogrical feature with medium cost 1

Here we can see the amount of each catogrical feature with high cost 2

Here we can see the amount of each catogrical feature with very high cost 3

Here I use pie to know the amount of the phones that support wifi , buetooth

Here I use pie to knowthe amount of the phones that support 3G , 4G

Here I use pie to know the amount of the phones that support dual sim , tuoch screen

Observations:

we obtain that we had the sam amount of praice range over the data
the data include old speicification
RAM has biggest effict on price * In 0 (low cost) Ram values are changing between 0- 2000 megabytes * In 1 (medium cost) Ram values are changing between 0-3000 megabytes * In 2 (high cost) Ram values are changing between 1000-4000 mb * In 3 (very high cost) Ram values are changing between 2000 and 4000 mb( mostly 3500-4000 mb)

2. Split the data to X & y for train the models.

X fot all feature withot price_range
y for target (price_range)

3. Defined Baseline model

to make sure the model that we will use is appropriate for the problem

4. defined classification model

Random forest model (rf)
K nearest neighbor model (knn)
Decision tree model (dt)

5. valuate model using cross validation.

Why do we need cross validation in machine learning ? Cross-validation is primarily used to estimate the skill of a machine learning model on unseen data.That is, to use a limited sample in order to estimate how the model is expected to perform in general when used to make predictions on data not used during the training of the model.

6. define stack model.

Stacking, also known as stacked generalization, is an ensemble method where the models are combined using another machine learning algorithm

7.valuate model using cross validation.

8. optimize the best model using grid search.

Grid search is essentially an optimization algorithm which lets you select the best parameters for your optimization problem from a list of parameter options that you provide, hence automating the 'trial-and-error' method.

10. split the data using train_test_split from scikitlearn and apply the best model

compare Model score

Note :

Random forest model (rf)
K nearest neighbor model (knn)
Decision tree model (dt)
Stacking model (staked)
Stacking model after optimizing (grid)

helah20/mobile-price-classification