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Perfect Combination: Ten cool uses of Siri + Wolfram Alpha

After reading the ten "serious" usage of Siri, the powerful functions of the "Siri + X" combination must be visible to everyone. If you carefully consider the ten "serious" usage we have introduced, it is not difficult to find that the combination of Siri + Wolfram Alpha has a cool gameplay. Next let's take a look at what sparks Siri + Wolfram Alpha can make. Background:Wolfram Alpha is a knowledge computin

Python handles PDF and CDF

One of the most necessary things to do when you get the data is to look at your data distribution. The distribution of data also includes two types: PDF and CDF.Here's how to generate PDFs and CDF using Python: Use the Matplotlib Drawing Interface hist () to directly draw the PDF distribution; Using NumPy's data processing function histogram (), the PDF distribution data can be generated to facilitate subsequent data processing, such as t

Introduction to Wolfram programming language

Wolfram is a programming language that can really change the world. Stephen Wolfram, a British mathematician who developed the famous mathematical software Mathematica and the knowledge-type search engine Wolfram Alpha (Siri's behind-the-scenes technology), announced that they had finally developed a "world in hand and everyone can use it." Programming language

Calculate the CDF of Poisson distribution with Boost C + + Library

The cumulative distribution function (CDF) of Poisson distribution can be easily calculated by R function Ppois () or octave /matlab function Poisspdf (). However, it isn't a easy thing to deal with statistics with C + + from scratch. Today I found a very powerful C + + mathematical library (actually not limited to math), boost. Unfortunately, it is hard to figure out the API of the ' boost library from the ' Code if you are not familiar with generali

Wolfram mathematic Process Control

Loop statement doThe Do loop feels a bit like the For loop in the C language, in the form of the following:Example:WhileGrammatical form:Example:ForThe For loop feels the same as the For loop for C semantics, in the following form:The first example

Introduction to machine learning--talking about neural network

neural network-http://blog. Sina com.cn/s/blog_8684880b0100vxtv.html (Sina replaced by Sina) On the origin of sigmoid, there are few mentions on the Chinese website. Here is a brief talk, I hope to give you an extension of ideas. PS: Here's the formula I have given the solution process, but now this year, by hand to solve the problem less and fewer people, the general equation with software to solve the line.For example, to solve sigmoid differential equations, you can use MATLAB to solve: Dsol

8.MATLAB parameter estimation and hypothesis testing-nonparametric parameter test-distribution fitting and test __matlab data analysis and statistics

the first worksheet, which is the total score dataScore=xlsread (' results. xls ', ' g2:g52 ');% minus 0 of the total score, that is, missing test dataScore=score (score>0); % Specifies ' nbins ' parameters for card-side fitting test of goodness[H,p,stats]=chi2gof (Score, ' Nbins ', 6) h =0p =0.3580Stats =chi2stat:0.8449Df:1Edges: [49.0000 73.5000 81.6667 89.8333 98.0000]O: [14 17 10 8]E: [14.4027 15.1752 12.4207 7.0014]The above two calls to get the same H value, but the P value and stats are

20 Hot Issues in XML

xml| problem these days, almost everyone is talking about XML (extensible Markup Language), but few people really understand what it means. The proponents of XML believe that it solves all the problems that HTML cannot solve, and allows the data to be exchanged flexibly between different operating systems or applications. Indeed, all observers agree that XML will trigger a revolution in content publishing and knowledge exchange. Whoever enters the field first will be able to gain a great profit.

Histogram equalization of python--

fromPILImportImage fromPylabImport* fromNumPyImport*defHisteq (Im,nbr_bins = 256): """histogram equalization of a grayscale image""" #calculate the histogram of an image #in NumPy, a function histogram () that calculates the histogram is also provided, the first of which is the histogram statistic, and the second is the median value for each binsImhist,bins = Histogram (Im.flatten (), nbr_bins,normed=True) CDF= Imhist.cumsum ()#

A brief overview of cellular automata and its applications

Talk about some of your own learning, please correct me if there are mistakes.Cellular automata (Cellular automata) was the early 1950s by the father of the computer von Neumann (J.Von Neumann) is proposed to simulate the self-replicating capabilities of a life system. Since then, Stephen Wolfram has carried out a thorough study of cellular automata theory, for example, he has studied the models produced by all 256 rules of one-dimensional elementary

fri.device.rating.program.v3.0.0.742+pipeflow.expert.2016.v7.30 Professional not seen in the market

Simulation softwareSystemmodeler is one of a number of software programs designed to help engineers in visual models, complex systems. Other include Maplesoft company's Maplesim and Simulink, from MathWorks company.The Wolfram Systemmodeler features include:Based on the non-proprietary, object-oriented, equation-based Modelica language.Graphical user interface for drag modelingText user interface for equation-based Modelica modeling, simulation, docu

Python OpenCV learning notes histogram equalization, pythonopencv

(), 256, [0,256])cdf = hist.cumsum()cdf_normalized = cdf*float(hist.max())/cdf.max()plt.plot(cdf_normalized, color = 'b')plt.hist(img.flatten(),256,[0,256], color = 'r')plt.xlim([0,256])plt.legend(('cdf','histogram'), loc = 'upper left')plt.show() As you can see, the histogram is located in a brighter area. We need a complete spectrum. Therefore, we need a conve

An overview of internal management mechanism of log buffer in Oracle

The internal management of the log buffer is divided into two parts, one being the build redo record and the other being the redo record writing to the online log file. These two parts are not isolated and unrelated. During the process of generating a redo record, LGWR may be triggered to write the redo record to the online log file. We first use an example to illustrate the procedure in the log buffer, and use [file#, blk#] to represent a block of data, file# to represent the file number, and

SQL and tables about the processes used in the project

SELECT * FROM Flow_mainSeqcode full_name short_name Flow_desc create_time update_time1 coursepackflow CP Course package Online maintenance 2013-01-06 15:23:50 (NULL)2 requirementgrabcourse RGC Elective course 2013-01-06 15:23:50 (NULL)CourseLibFlow1 CLF Course Library Management 2013-01-06 15:23:50 (NULL)Requirementexpertcourse REC Elective course 2013-01-08 16:30:16 (NULL)Newcourselibflow NCLF Course Library Management 2013-06-21 10:43:03 (NULL)Coursedevflow

fri.device.rating.program.v3.0.0.742+pipeflow.expert.2016.v7.30 Professional not seen in the market

Simulation softwareSystemmodeler is one of a number of software programs designed to help engineers in visual models, complex systems. Other include Maplesoft company's Maplesim and Simulink, from MathWorks company.The Wolfram Systemmodeler features include:Based on the non-proprietary, object-oriented, equation-based Modelica language.Graphical user interface for drag modelingText user interface for equation-based Modelica modeling, simulation, docu

10 excellent programming languages for math

0 focus on "lab building" and share a project tutorial every day as a passionate person in math and programming languages, no one can stop me from sharing 10 of the fantastic programming languages I've summed up for math. Text total: 2619 words Estimated reading time: 7 minutes As a passionate person in math and programming languages, no one can stop me from sharing 10 of the fantastic programming languages I've summed up for math. The goal is to diversify and provide a wide range of programmi

The drawing normalization of Python histogram

def get_cdf (numlist):p rint "Total number of numlist%d"%len (numlist) Numarray = Np.asarray (numlist) dx =. 01bins_array = NP. Arange ( -0.5,1.5,DX) hist, bin_edges = Np.histogram (Numarray, Bins=bins_array, normed=false) CDF = Np.cumsum (hist) CDF = Cdf/float (Hist.sum ()) Bins_list = Bins_array[1:]return (bins_list, CDF

Visiting Leibniz: A collision with a master through time and space

I've been interested in Gottfried Leibniz for years, especially since he seemed to want to create a tool like Mathematica and Wolfram Alpha 3 centuries ago and probably write a new science. So, on a recent trip to Germany, I was thrilled to be able to visit the Leibniz Museum in Hanover.Flipping through his yellow manuscript (still quite enough to withstand my touch), I tried to imagine his thoughts in writing these chapters, trying to connect what I

Next generation's main technology conjecture after SaaS

. Whether you are social software, office software, gaming applications, etc., all within this category. Our computers have been able to understand many different machine/programming languages since their inception. But they have never been able to really understand the human language.So reasoning, we have reason to believe that semantic understanding is the thing we are looking for. In fact, earlier Wolfram Alpha products have been trying to explore

TIOBE September programming Language rankings: Julia First 50

), Common Lisp, Crystal, Eiffel, Elixir, Forth, Hack, Icon, IDL, Inform, Io, J, Korn Shell, Kotlin, Maple, ML, Modula-2, MQL4, ms-d OS batch, NATURAL, Nxt-g, OCaml, OpenCL, Oz, Pascal, pl/i, PostScript, PowerShell, REXX, S, Smalltalk, SPARK, SPSS, Standa Rd ML, Stata, TCL, VBScript, Verilog, Z Shell Change index of the month:This month the following changes has been made to the definition of the the index: Manjunath Babu suggested to rename Mathematica to

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