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index.xml
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<?xml version="1.0" encoding="utf-8" standalone="yes"?>
<rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom">
<channel>
<title>Linlin Li's Data Science Project Portfolio</title>
<link>https://linlin-li-1.github.io/</link>
<description>Recent content on Linlin Li's Data Science Project Portfolio</description>
<generator>Hugo -- gohugo.io</generator>
<language>en-us</language>
<lastBuildDate>Sat, 28 Nov 2020 22:40:39 -0500</lastBuildDate>
<atom:link href="https://linlin-li-1.github.io/index.xml" rel="self" type="application/rss+xml" />
<item>
<title>Two-stage CNN-based 3D Object Classification</title>
<link>https://linlin-li-1.github.io/2020/11/two-stage-cnn-based-3d-object-classification/</link>
<pubDate>Sat, 28 Nov 2020 22:40:39 -0500</pubDate>
<guid>https://linlin-li-1.github.io/2020/11/two-stage-cnn-based-3d-object-classification/</guid>
<description>In this post I’ll be discussing my final project for ECE 685: Deep Learning, a course I took at Duke University. For this project, Jiawei Chen and I proposed a two-stage algorithm to improve classification accuracy. You can find my Github repository for this blog here.
Convolutional Neural Networks (CNNs) have been used on 3D point clouds for object classification. However, due to the nature of the CNNs, classifiers, especially those CNN-based classifiers, are usually confused about objects that look alike.</description>
</item>
<item>
<title>COVID-19 Analysis</title>
<link>https://linlin-li-1.github.io/2020/11/covid-19-analysis/</link>
<pubDate>Tue, 17 Nov 2020 17:20:39 -0500</pubDate>
<guid>https://linlin-li-1.github.io/2020/11/covid-19-analysis/</guid>
<description>1. Background COVID-19, a disease caused by a new type of coronavirus, has become a major global human threat that has turned into a pandemic. During this period, the role of the immune system has attracted people's attention. Some researchers identified some important nutritional considerations for the prevention and management of COVID-19 diseases (Yasemin Ipek Ayseli et al., 2020). Based on these studies, some &quot;experts&quot; and articles have urged people to buy supplements or eat particular foods to enhance their immune system.</description>
</item>
<item>
<title>Implementation of First-order Optimization Methods (PyTorch)</title>
<link>https://linlin-li-1.github.io/2020/11/implementation-of-first-order-optimization-methods-pytorch/</link>
<pubDate>Wed, 04 Nov 2020 23:30:38 -0500</pubDate>
<guid>https://linlin-li-1.github.io/2020/11/implementation-of-first-order-optimization-methods-pytorch/</guid>
<description>In this post, I would like to share my implementation of several famous first-order optimization methods. I know that these methods have been implemented very well in many packages, but I hope my implementation can help you understand the ideas behind it.
Suppose we have \(N\) data examples and the parameters \(\mathbf{w} \in \mathcal{R}^D\).
For convenience, I first write a class named optimizer.
class optimizer: def __init__(self): pass def set_param(self, parameters): self.</description>
</item>
<item>
<title>Image Classification using CNN (PyTorch)</title>
<link>https://linlin-li-1.github.io/2020/10/image-classification-using-cnn-pytorch/</link>
<pubDate>Fri, 23 Oct 2020 04:17:45 -0400</pubDate>
<guid>https://linlin-li-1.github.io/2020/10/image-classification-using-cnn-pytorch/</guid>
<description>As we all know, insects are a major factor in the world's agricultural economy. Therefore, it is particularly important to prevent and control agricultural insects by using procedures such as dynamic surveys and real-time monitoring systems for insect population management. However, there are many insects in the farmland, and it takes a lot of time to be manually classified by insect experts. Since people without the knowledge of entomology cannot distinguish the types of insects, it is necessary to develop more rapid and effective methods to solve this problem.</description>
</item>
<item>
<title>Dashboard for Doctorates Awarded in the United States</title>
<link>https://linlin-li-1.github.io/2020/10/dashboard-for-doctorates-awarded-in-the-united-states/</link>
<pubDate>Wed, 21 Oct 2020 17:23:49 -0400</pubDate>
<guid>https://linlin-li-1.github.io/2020/10/dashboard-for-doctorates-awarded-in-the-united-states/</guid>
<description>I believe that for graduate students, what to do after graduation may not have been decided yet. Is it a good choice to continue to study for a PhD, or is it a wise choice to find a job in the industry? What will doctoral degrees bring to students? Which field of doctoral degrees are more popular?
To answer these questions, I found some historical data about doctorates awarded in the United States to display some information behind the data.</description>
</item>
<item>
<title>Data Extraction in JSON format through Star Wars API</title>
<link>https://linlin-li-1.github.io/2020/10/data-extraction-in-json-format-through-star-wars-api/</link>
<pubDate>Fri, 09 Oct 2020 13:26:07 -0400</pubDate>
<guid>https://linlin-li-1.github.io/2020/10/data-extraction-in-json-format-through-star-wars-api/</guid>
<description>Star Wars API (SWAPI) is the world's first quantitative Star Wars data set that can be used for programming. The developers have aggregated multiple types of entity data involved in the Star Wars series of movies. It also provides a Python programming language package, swapi-python, which is built by the author of swapi, Paul Hallett.
The six APIs correspond to six types of entities:
Films：http://swapi.co/api/films/1 People：http://swapi.co/api/people/1 Starships：http://swapi.co/api/starships/1 Vehicles：http://swapi.co/api/vehicles/1 Species：http://swapi.</description>
</item>
<item>
<title>Web Scraping for preparing training data for Machine Translation</title>
<link>https://linlin-li-1.github.io/2020/10/web-scraping-for-preparing-training-data-for-machine-translation/</link>
<pubDate>Sat, 03 Oct 2020 14:40:27 -0400</pubDate>
<guid>https://linlin-li-1.github.io/2020/10/web-scraping-for-preparing-training-data-for-machine-translation/</guid>
<description>During my internship at Birch.ai, we want to test and improve the performance of our machine translation model. To achieve this, we first need to obtain a foreign language data set and its corresponding English data set, and hope that these data sets are translated by humans rather than machine translations.
In this article, I would share my experience in scraping The New England Journal of Medicine from scratch using Python.</description>
</item>
<item>
<title>Create a Sqlite3 database for Spotify songs data</title>
<link>https://linlin-li-1.github.io/2020/10/create-a-sqlite3-database-for-spotify-songs-data/</link>
<pubDate>Sat, 03 Oct 2020 01:51:47 -0400</pubDate>
<guid>https://linlin-li-1.github.io/2020/10/create-a-sqlite3-database-for-spotify-songs-data/</guid>
<description>How to convert Python data frame to Sqlite3 database? It is quite easy in the Jupyter Notebook with sql extension. With this powerful extension, we can excecute SQL query in Jupyter Notebook, which is quite convenient.
In this article, I would share my experience in creating a Sqlite3 database to store Spotify songs data in the 3rd Normal Form using Python. It is quite easy, everyone who has some basic Python skills can follow my steps and try to do it.</description>
</item>
<item>
<title>How terrible is malaria? (Data visualization with Python)</title>
<link>https://linlin-li-1.github.io/2020/09/how-terrible-is-malaria-data-visualization-with-python/</link>
<pubDate>Mon, 21 Sep 2020 12:08:26 -0400</pubDate>
<guid>https://linlin-li-1.github.io/2020/09/how-terrible-is-malaria-data-visualization-with-python/</guid>
<description>Malaria is a serious and sometimes fatal disease caused by a parasite that commonly infects a certain type of mosquito which feeds on humans. People who get malaria are typically very sick with high fevers, shaking chills, and flu-like illness. Because malaria causes so much illness and death, the disease is a great drain on many national economies. Since many countries with malaria are already among the poorer nations, the disease maintains a vicious cycle of disease and poverty.</description>
</item>
<item>
<title>3 problems on Euler Project</title>
<link>https://linlin-li-1.github.io/2020/08/3-problems-on-euler-project/</link>
<pubDate>Fri, 28 Aug 2020 12:23:55 -0400</pubDate>
<guid>https://linlin-li-1.github.io/2020/08/3-problems-on-euler-project/</guid>
<description>In this article, I would share my solutions to 3 problems of Project Euler using Python. The problems on Project Euler are designed according to the &quot;one-minute rule&quot;, which shows that an efficient implementation will allow a solution to be obtained in less then one minute. This is a good website where you can practice designing efficient algorithms for many difficult problems. I will continue to resolve problems on this website and update this blog in the future.</description>
</item>
<item>
<title>How to build a personal website on Github Pages using Hugo</title>
<link>https://linlin-li-1.github.io/2020/08/how-to-build-a-personal-website-on-github-pages-using-hugo/</link>
<pubDate>Fri, 21 Aug 2020 13:14:00 -0400</pubDate>
<guid>https://linlin-li-1.github.io/2020/08/how-to-build-a-personal-website-on-github-pages-using-hugo/</guid>
<description>In this article, I would share my experiences and the steps I took when building a personal website on GitHub Pages using Hugo. To build a personal website, you don&rsquo;t need to have knowledge other than writing Markdown. It&rsquo;s simple, let&rsquo;s go!
You can find my Github repository for this blog here.
Step 1: Install Git Git is a free and open source distributed version control system designed to handle everything from small to very large projects with speed and efficiency.</description>
</item>
<item>
<title>Welcome!</title>
<link>https://linlin-li-1.github.io/2020/08/welcome/</link>
<pubDate>Thu, 20 Aug 2020 01:33:47 -0400</pubDate>
<guid>https://linlin-li-1.github.io/2020/08/welcome/</guid>
<description>Nice to meet you, and welcome to Linlin Li&rsquo;s website! I am Linlin Li, a student in the Master’s of Statistical Science program at Duke University.
I have always been eager to create a personal website to write interesting things and record my own growth. Fortunately, one of my courses requires me to update on my website, and I took this opportunity to make this idea come true. In the beginning, I planned to focus on documenting data science projects for future reference and let the website record the track of my learning.</description>
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