COURSERA CAPSTONE PROJECT MILESTONE REPORT

COURSERA CAPSTONE PROJECT MILESTONE REPORT

Calculate Frequencies of N-Grams Step 7: After that we can use RWeka package to create one-gram, bi-grams,tri-grams sets, and sort them to get the top 10 used n-grames. A possible method of prediction is to use the 4-gram model to find the most likely next word first. Next, we will do the same for Bigrams, i. Given a word or phrase as input, the application will try to predict the next word. The following task have been accomplished:

For now, we used this tool to explore certain patters in the data, including most notably the highest frequency 1,2,3 and 4 length word patterns. I will be made into the corpus to:. We will require the following helper functions in order to prepare our corpus. Sample Summary A summary for the sample can be seen on the table below. In this report will show how we can load and clean the data used to create this predictive model and also we will make basic exploratory analysis of sample of this data. For each Term Document Matrix, we list the most common unigrams, bigrams, trigrams and fourgrams. In this case, we created four different N-grams as follows:

Essentially, we flip a coin to decide which lines we should include.

RPubs – Coursera Data Science Capstone: Milestone Report

This concludes the exploratory analysis. Then we will download the text files used in this project, those files can be downloaded from the following link: Unigram Analysis The first analysis we will perform is a unigram analysis. We will use the Ngram dataframes created to calculate the probability of the next word occuring. The model will then be integrated into a shiny application that will provide a simple and intuitive front end for the ned user.

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Then, we can clean data by removing numbers, white spaces, special characters, and profanity words which has been downloaded from the following link: We will reoprt the following helper functions in order to prepare our corpus.

Executive summary This report is a milestone report of the capstone project introduced by Johns Hopkins University through Coursera. Casptone that we have loaded the raw data, we will take a sub sample of each file, because running the calculations using the raw files will be really slow. Blogs are the highest at After that we can combine the three sample into one character vector, and identify the sentences.

Milestone Report for Coursera Data Science Specialization SwiftKey Capstone

Each of these N-grams is transformed into a two column dataframe containing the following columns:. The first step in the process is to read in the three input files. Before moving to the next step, we will save the corpus in a text file so we have it intact for future reference. My next steps will be: To do that we will use the google badwords database.

This milestone report is based on exploratory data analysis of the SwifKey data provided in the context of projrct Coursera Data Science Capstone. Introduction the milestone report for week 2 in the Exploratory Analysis section is from the Coursera Data Science Capstone project.

coursera capstone project milestone report

Rda” ggplot head trigram. For now, we used this tool to explore certain patters in the data, including most notably the highest frequency 1,2,3 and 4 length word patterns.

RPubs – Coursera Capstone Project Milestone Report

For this project, the english language files will be used. The main parts are loading and cleaning the data as well as use NLM Natural Language Processing applications in R s a first step toward building a predictive model. Given a word or phrase as input, the application will try to predict the next word. N-grams ccoursera a critical tool to identify the frequency of certain words and word patterns.

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Data Science Capstone Milestone Report

Sample Summary A summary for the sample can be seen on the table below. Load packages and data Step 1: The overall objective is to help users complete sentences by analyzing the words they have entered and predicating the next word.

Next, this data was combined into a single file for further clearning and analysis. The purpose of this Milestone Report is to reort progress towards the end goal of this project.

coursera capstone project milestone report

In addition to loading and cleaning the data, the aim here is to make use of the NLP packages for R to tokenize n-grams as a first step toward testing a Mileshone model for prediction. As an alternative of the last plots, and to give a quick impression of the most common millestone, this graph shows the most common words of the corpus. This will create a unigram Dataframe, which we will then manipulate so we can chart the frequencies using ggplot.

coursera capstone project milestone report

In order to be able to clean and manipulate our data, we will create a corpus, which will consist of the three sample text files. Here we list the most milestnoe unigrams, bigrams, and trigrams. Build basic n-gram model.