Search results for "python"
epub |eng | 2016-09-14 | Author:Kenneth Reitz & Tanya Schlusser
( Category:
Computers & Technology
May 19,2019 )
epub |eng | 2009-06-12 | Author:Steven Bird, Ewan Klein & Edward Loper
Naive Bayes Classifiers In naive Bayes classifiers, every feature gets a say in determining which label should be assigned to a given input value. To choose a label for an ...
( Category:
Object-Oriented Design
May 19,2019 )
epub, mobi, pdf |eng | 2016-12-06 | Author:Jake VanderPlas
In[11]: plt.imshow(I, cmap=plt.cm.get_cmap('Blues', 6)) plt.colorbar() plt.clim(-1, 1); Figure 4-56. A discretized colormap The discrete version of a colormap can be used just like any other colormap. Example: Handwritten Digits For ...
( Category:
Software Development
May 19,2019 )
epub |eng | 2019-02-27 | Author:Dusty Phillips & Benjamin Baka & Fabrizio Romano [Dusty Phillips]
( Category:
Object-Oriented Design
May 15,2019 )
epub, pdf |eng | 2019-03-29 | Author:Takashi Freeman Richard
Writing to DynamoDB using Python The following code writes three records to DynamoDB. Create another file called dynamo_modify_items.py with the following Python code: from boto3 import resource class DynamoRepository: def ...
( Category:
Computers & Technology
May 6,2019 )
epub, pdf |eng | 2019-02-13 | Author:Arjuna Sky Kok
def fillPosts(self, posts): self.clearTweetsField() for post in posts: label_field = QtWidgets.QLabel(post) self.tweets_layout.addWidget(label_field) The same strategy is used in the two following methods. We clear the bookmark widgets from the bookmarks ...
( Category:
Cryptography
May 4,2019 )
epub | | | Author:Machine Learning in Python
Our tree has an accuracy of 0.838 on the training set. But remember that this is not a good indicator. This is especially true for decision trees as this method ...
( Category:
Machine Theory
May 3,2019 )
epub |eng | 2019-03-29 | Author:Krish Naik
portfolio_returns=[] portfolio_volatilities=[] for x in range(1000): weights=np.random.random(num_assets) weights/=np.sum(weights) portfolio_returns.append(np.sum(weights*log_returns.mean())*250) portfolio_volatilities.append(np.sqrt(np.dot(weights.T,np.dot(log_returns.cov(),weights)))) portfolio_returns,portfolio_volatilities The output generated is shown in the following screenshot: In the loop, we are generating two weights, whose sums ...
( Category:
Data Modeling & Design
May 3,2019 )
epub |eng | 2016-09-17 | Author:Cody,Isaac D. [Cody,Isaac D.]
answer = 0 while (answer != 2): answer = int(input("What is 4 / 2? ")) print ("Correct!") So long as the specified condition evaluates to true, the “while” code block ...
( Category:
Computers & Technology
April 30,2019 )
epub, pdf |eng | | Author:Irv Kalb
import random MAX_GUESSES = 5 # maximum number of guesses allowed MAX_RANGE = 20 # highest possible number #Show introduction print 'Welcome to my Guess the Number program.' print 'Guess ...
( Category:
Object-Oriented Design
April 24,2019 )
epub |eng | 2009-06-28 | Author:Beazley, David M. [Beazley, David M.]
Message Handling Normally, messages are handled by the root logger. However, any Logger object can have special handlers added to it that receive and process log messages. This is done ...
( Category:
Operating Systems
April 21,2019 )
epub, mobi, pdf |eng | 2016-07-17 | Author:Kyran Dale
dataframe_to_mongo(df_winners_all, 'nobel_prize', 'winners_all') With our cleaned data in the database, we’re ready to start exploring it in the next chapter. Summary In this chapter, you learned how to clean a ...
( Category:
Software Development
April 18,2019 )
mobi |eng | 2019-03-24 | Author:MIttal, Narendra Mohan [MIttal, Narendra Mohan]
There are probably as many different hash algorithms as there are databases, all with the goal of producing a rather even distribution. Because even the most complex hash algorithm rarely ...
( Category:
MySQL
April 8,2019 )
epub |eng | 2018-11-29 | Author:Cody Jackson
Using SQL to query a database To query a table using SQL, you simply tell the database what it is you're trying to do. If you want to get a ...
( Category:
Object-Oriented Design
April 8,2019 )
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