2020欧洲杯时间表

Questions tagged [data-science]

2020欧洲杯时间表 Data science concerns extracting knowledge or insights from data, in whatever shape or form. It can contain predictive analytics and usually takes a lot of data wrangling. Do consider posting in the http://datascience.stackexchange.com/

Filter by
Sorted by
Tagged with
-1
votes
3answers
19 views

Can someone explain to me how MinMaxScaler() works? [closed]

Why we are using the MinMaxScaler() and what does it do? scaler = MinMaxScaler() scaler.fit(X_train) X_train = scaler.transform(X_train) X_test = scaler.transform(X_test) model = LogisticRegression() ...
0
votes
0answers
3 views
-1
votes
1answer
25 views

How to define line of data? [closed]

I have been struggling with how to define a line of data in python code. I am trying to define a line as a local variable that is every 8 characters in my data. The other way I was potentially ...
-1
votes
0answers
16 views

How Can I Change Datatype Of Columns In Pandas

Dataset:http://api.covid19india.org/csv/latest/raw_data1.csv How can i change datatype of Patient Number and Age Bracket Columns to Int in this dataset And fill missing value with mean in Age ...
-1
votes
0answers
8 views

Interpretation of overfitted xgboost model

Ciao, I am working with xgbRegressor model from xgboost package in Python 2.7 My problem is kind of classical regression problem: I have some features and I need to predict a continues target between ...
-4
votes
0answers
25 views

Python for Machine Learning [closed]

I've learning python for 1 year ago, now I want learn Machine Learning and Data Science I want now how to get started
0
votes
0answers
23 views

How to replace specific entries in a column using replace() in a dataframe when they are not getting updated in the output by using replace method.? [duplicate]

Here is a dataframe named Energy which looks like this: Country Energy Supply Energy Supply per Capita 16 Afghanistan 3.210000e+08 10.0 17 ...
0
votes
1answer
26 views

Merging three dataframes

I am trying to merge three data frames a,b,c together on the column-'tweet_id' which is present in all three data frames. I have converted the data type to string in all three data frames. Despite ...
0
votes
2answers
23 views

I am trying to join a URL in scrapy but unable to do so

I am trying to fetch (id and name)i.e name from one website and want to append the variable to another link. for eg in the name variable i get - /in/en/books/1446502-An-Exciting-Day.(There are many ...
-1
votes
1answer
12 views

Tabular Format not visible in Jupiter notebook

[The current Image of the csv file when I use panda to read it] I was compelled to delete a few files from the Anaconda folder in my laptop and now when I used anaconda Jupyter notebook to work on a ...
-1
votes
0answers
8 views

Dummy Variable Trap in sklearn and LabelBinarizer

I've couple of questions in mind for which I am trying to find some answers. These are:- Does Dummy Variable Trap occurs while encoding categorical data using sklearn LabelBinarizer? As far as I ...
0
votes
0answers
10 views

How to execute Model built with R and Python in Spark?

Context: I have developed a model in R and Python for forecasting. I even have a dataset for the Amazon forecast. The reason is having three separate models is to get better accuracy for different ...
0
votes
0answers
6 views

2D or 3D Mapping an Environment in python3

So theoretically if I were to build a small raspberry pi powered rc car with either a camera or some other kind of sensor, would it be possible (if i have it drive around randomly and record as it ...
1
vote
3answers
61 views

How can I count the unique values from all columns and display them in a separate dataframe w.r.t. their unique name?

| 1st Most Common Value | 2nd Most Common Value | 3rd Most Common Value | 4th Most Common Value | 5th Most Common Value | |-----------------------|-----------------------|-----------------------|------...
-2
votes
0answers
7 views

Using Latent semantic analysis concept with coded segments

I need to calculate cosine similarity between coded segments, however all the previous algorithms of my project uses binary data so I need to find a way to convert the binary data into numerical data. ...

15 30 50 per page
1
2 3 4 5
326