Rで学ぶSentiment Analysis

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更新日 2024/05

肯定・否定表現や感情の意図を見抜き、説得力ある可視化で示すことで、sentiment analysis を学びます。

コース説明

前提条件

Text Mining with Bag-of-Words in R

Fast & Dirty: Polarity scoring

In the first chapter, you will learn how to apply qdap's sentiment function called polarity() .

Let's talk about our feelings

50 XP

Jump right in! Visualize polarity

100 XP

TM refresher (I)

100 XP

TM refresher (II)

100 XP

How many words do YOU know? Zipf's law & subjectivity lexicon

50 XP

What is a subjectivity lexicon?

50 XP

Where can you observe Zipf's law?

100 XP

Polarity on actual text

100 XP

Explore qdap's polarity & built-in lexicon

50 XP

Happy songs!

100 XP

LOL, this song is wicked good

100 XP

Stressed Out!

100 XP

チャプターを開始

Sentiment Analysis the tidytext Way

In the second chapter you will explore 3 subjectivity lexicons from tidytext. Then you will do an inner join to score some text.

Plutchik's wheel of emotion, polarity vs. sentiment

50 XP

One theory of emotion

50 XP

DTM vs. tidytext matrix

100 XP

Getting Sentiment Lexicons

100 XP

Bing lexicon with an inner join explanation

50 XP

Bing tidy polarity: Simple example

100 XP

Bing tidy polarity: Count & pivot the white whale

100 XP

Bing tidy polarity: Call me Ishmael (with ggplot2)!

100 XP

AFINN & NRC methodologies in more detail

50 XP

AFINN: I'm your Huckleberry

100 XP

The wonderful wizard of NRC

100 XP

チャプターを開始

Visualizing Sentiment

Make compelling visuals with your sentiment output.

Parlor trick or worthwhile?

50 XP

Real insight?

50 XP

Unhappy ending? Chronological polarity

100 XP

Word impact, frequency analysis

100 XP

Introspection using sentiment analysis

50 XP

Divide & conquer: Using polarity for a comparison cloud

100 XP

Emotional introspection

100 XP

Compare & contrast stacked bar chart

100 XP

Interpreting visualizations

50 XP

Kernel density plot

100 XP

Box plot

100 XP

Radar chart

100 XP

Treemaps for groups of documents

100 XP

チャプターを開始

Case study: Airbnb reviews

Is your property a good rental? What do people look for in a good rental?

Refresher on the text mining workflow

50 XP

Step 1: What do you want to know?

50 XP

Step 2: Identify Text Sources

100 XP

Quickly examine the basic polarity

100 XP

Step 3: Organize (& clean) the text

50 XP

Create Polarity Based Corpora

100 XP

Create a Tidy Text Tibble!

100 XP

Compare Tidy Sentiment to Qdap Polarity

100 XP

Step 4: Feature Extraction & Step 5: Time for analysis... almost there!

50 XP

Assessing author effort

100 XP

Comparison Cloud

100 XP

Scaled Comparison Cloud

100 XP

Step 6: Reach a conclusion

50 XP

Confirm an expected conclusion

50 XP

Choose a less expected insight

50 XP

Your turn!

50 XP

チャプターを開始

Rで学ぶSentiment Analysis

コース完了

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Rで学ぶSentiment Analysis

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コース説明

前提条件

Fast & Dirty: Polarity scoring

Sentiment Analysis the tidytext Way

Visualizing Sentiment

Case study: Airbnb reviews

修了証明書を取得

19百万人を超える学習者と共にRで学ぶSentiment Analysisを始めましょう！

DataCamp for Mobileでデータスキルを磨きましょう

コース説明

修了証明書を取得

.css-nklxlk{color:var(--wf-brand--main, #03EF62);}19百万人を超える学習者と共にRで学ぶSentiment Analysisを始めましょう！

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DataCamp for Mobileでデータスキルを磨きましょう

19百万人を超える学習者と共にRで学ぶSentiment Analysisを始めましょう！