Pandas for beginners: How to handle real-life data
4) Reshape Your Data Frame
In real life, unlike the most famous datasets such as the Irises flowers, Titanic passengers, or Boston house prices, yours will need a little more work before you can start to dive into analysis and model training. Likely, you will have to reshape your data frame.
My data frame, as for now, can not be used to train a model because I have several rows for each user. Furthermore, I cannot perform analysis about which newsletters are the most useful because I have a row for each newsletters of every users.
I need to reshape it using a pivot table to have each newsletter as a column and only one row per user:
相關推薦
Pandas for beginners: How to handle real-life data
4) Reshape Your Data FrameIn real life, unlike the most famous datasets such as the Irises flowers, Titanic passengers, or Boston house prices, yours will
Python Pandas vs. Scala: how to handle dataframes (part II)
1. Read the dataframeI will import and name my dataframe df, in Python this will be just two lines of code. This will work if you saved your train.csv in t
tensorflow讀取jpg格式圖片報錯 ValueError: Only know how to handle extensions: ['png']; with Pillow installed matplotlib can handle more images
nac pill images flow value bubuko 技術分享 img info 當運行mpimg.imread("img.jpg")時,spyder 出現如下錯誤: ValueError: Only know how to handle extensions
How to user your life
“How we spend our days is ,of course, how we spend our lives.”——Annie Dillard ,The Wirting Life In the summer of 1997, NASA’s Pathfinder space
How to Determine Real Space used by a Table (Below the High Water Mark) (文件 ID 77635.1)
PURPOSE This article describes how to find out how many blocks are really being used within a table ie. are not empty. Please note that this article
How To Handle Click Events In Android RecyclerViews
According to the documentation, a RecyclerView is a flexible view for providing a limited window into a large data set. If you have done any android dev
How To Handle Network On Main Thread Error In Android
NetworkOnMainThreadException is a pretty popular exception among those new to android development. This exception is mainly thrown whenever an applicati
[iOS] How to handle click event of BackBarButtonItem in nav bar?
滿神奇的,完全不用去拉 UI, 就這幾行程式,navigation bar 上面的按鈕就出來了,也可以bind 到事件。 我用的程式碼: UIImage *addImage = [UIImage imageNamed:@"plus2.png"]; UIBarButtonItem *newShareBu
How to Handle Context with Dialogflow (Part 1: Knock Knock Jokes)
Step 1: Build a trigger for the bot to say “Knock Knock”To get the bot to start the “knock knock” joke, you have to trigger it. In this example, we’ll use
Ask HN: How to handle angel investor interest?
Our product has entered the launch stage and we are doing a kickstarter. I had asked a bunch of people for feedback before going live.One of them has exp
Wallets for dummies — how to protect your crypto
If you want to own cryptocurrencies you need a wallet. But you are responsible for selecting the correct one and for keeping your crypto funds safe. So, it
MVP for Android: how to organize the presentation layer
MVP (Model View Presenter) pattern is a derivative from the well known MVC (Model View Controller), and one of the most popular patterns to organize
Ask HN: How to handle a record during an interview?
I have a record, I was convicted of a handful of felonies roughly five years ago and ended up going to prison. I have since then gotten an awesome job and
How to Handle Missing Timesteps in Sequence Prediction Problems with Python
Tweet Share Share Google Plus It is common to have missing observations from sequence data. Data
How to Handle Missing Data with Python
Tweet Share Share Google Plus Real-world data often has missing values. Data can have missing va
How To Handle Missing Values In Machine Learning Data With Weka
Tweet Share Share Google Plus Data is rarely clean and often you can have corrupt or missing val
How To Build A Money Data Type In JavaScript
Last time I wrote a step-by-step example of how to apply Inside Out Test-Driven Development to a problem using JavaScript. That post used the Number type t
Ask HN: How to model numerical energy data in Wolfram Alpha
I'm working on a dataset that contains energy supply and consumption data. This is just a hobby and idea is to do visualizations and simple moodelling base
How to Scale Machine Learning Data From Scratch With Python
Tweet Share Share Google Plus Many machine learning algorithms expect data to be scaled consiste
How to migrate petabyte-scale data to the cloud
When planning on getting your data into the cloud as a part of an application migration or a data center shutdown, you will run into the