# Toshiaki Takeuchi

### MathWorks

Marketing at MathWorks, Data Science Geek

Professional Interests: Inbound Marketing, Machine Learning, Natural Language Processing

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**Content Feed**

Submitted

Workflow: Collecting and Analyzing Twitter Feed

This live script shows a basic workflow for collecting and analysing Twitter feed using Datafeed Toolbox with MATLAB.

2 years ago | 3 downloads |

Submitted

Web Scraping and Mining Scientific Conference Data in MATLAB

Let's learn how to mine data from the web with MATLAB-based web scraping tools, with NeurIPS machine learning conference paper e...

2 years ago | 3 downloads |

Submitted

Multi-Armed Bandit Problem Example

Learn how to implement two basic but powerful strategies to solve multi-armed bandit problems with MATLAB.

2 years ago | 5 downloads |

Submitted

Building Shakespeare Bot with Text Analytics Toolbox

Let's use natural language processing to create a fun bot that generates random text that sounds like a line from Shakespeare.

2 years ago | 1 download |

Artificial Neural Networks for Beginners - MNIST Dataset: Unable to read file 'myWeights'. No such file or directory. Can anyone help me understand what I should do successfully load weights?

You should remove "load myWeights" from your script. The blog post is like a cooking show, and it is just loading the pre-comput...

6 years ago | 0

Basic question about Text Analysis/Text Analytics/Text Mining using Matlab

This blog post just went live. You can probably use this as a starting point. <http://blogs.mathworks.com/loren/2015/04/08/can-y...

6 years ago | 0

| accepted

If I am no longer a student but want to learn MATLAB, what version should I buy?

You can now get a personal use license called <http://www.mathworks.com/products/matlab-home/ MATLAB Home>.

7 years ago | 4

Solved

2倍してみよう - ここからスタート！

初めにこの問題を試してみよう。 入力としてxを与え、それを2倍して結果をyに代入せよ。 Examples: Input x = 2 Output y is 4 Input x = 17 Output y is 34 ...

7 years ago

Solved

ベクトル [1 2 3 4 5 6 7 8 9 10] の作成

MATLABでは,角括弧の中に要素を入れることで、ベクトルを作成できる。 x = [1 2 3 4] また次のようにも書ける（コンマはオプション）。 x = [1, 2, 3, 4] 問題：次のベクトルを出力する関数を作成せよ。...

7 years ago

Solved

Remove any row in which a NaN appears

Given the matrix A, return B in which all the rows that have one or more <http://www.mathworks.com/help/techdoc/ref/nan.html NaN...

9 years ago

Solved

Finding Perfect Squares

Given a vector of numbers, return true if one of the numbers is a square of one of the other numbers. Otherwise return false. E...

9 years ago

Solved

Weighted average

Given two lists of numbers, determine the weighted average. Example [1 2 3] and [10 15 20] should result in 33.333...

9 years ago

Solved

Determine whether a vector is monotonically increasing

Return true if the elements of the input vector increase monotonically (i.e. each element is larger than the previous). Return f...

9 years ago

Solved

Swap the first and last columns

Flip the outermost columns of matrix A, so that the first column becomes the last and the last column becomes the first. All oth...

9 years ago

Solved

Make a checkerboard matrix

Given an integer n, make an n-by-n matrix made up of alternating ones and zeros as shown below. The a(1,1) should be 1. Example...

9 years ago

Solved

Triangle Numbers

Triangle numbers are the sums of successive integers. So 6 is a triangle number because 6 = 1 + 2 + 3 which can be displa...

9 years ago

Solved

Find all elements less than 0 or greater than 10 and replace them with NaN

Given an input vector x, find all elements of x less than 0 or greater than 10 and replace them with NaN. Example: Input ...

9 years ago

Solved

Column Removal

Remove the nth column from input matrix A and return the resulting matrix in output B. So if A = [1 2 3; 4 5 6]; and ...

9 years ago

Solved

Select every other element of a vector

Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...

9 years ago

Solved

Determine if input is odd

Given the input n, return true if n is odd or false if n is even.

9 years ago

Solved

Find the sum of all the numbers of the input vector

Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

9 years ago

Solved

Make the vector [1 2 3 4 5 6 7 8 9 10]

In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...

9 years ago

Solved

Times 2 - START HERE

Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

9 years ago