Here you can fetch word frequencies from Wolfram but I would like to know how to do this in Python because I am having difficulty finding any code to do this.
https://reference.wolfram.com/language/ref/WordFrequencyData.html
If you have access to Wolfram Engine/Cloud, you can use the Wolfram Client Library for Python to evaluate an expression using Wolfam's WordFrequencyData function in Python.
Related
I am a newbie of TensorFlow in Go.
There are some doubts during my first traing demo. I just find one optimizer in Go's wrappers.go.
But i learn the demos of python,they has serveral optimizers. Like
GradientDescentOptimizer
AdagradOptimizer
AdagradDAOptimizer
MomentumOptimizer
AdamOptimizer
FtrlOptimizer
RMSPropOptimizer
The similar prefix of func like ResourceApply...
GradientDescent
Adagrad
AdagradDA
Momentum
Adam
Ftrl
RMSProp.
And they return a option.I don't know what are their purpose. I cant find the relation of them and optimizer.
And how can i make a train in Go by TensorFlow.
What should I should use like python's tf.Variable in Go?
You can't train a Tensorflow model using Go.
The only thing you can do is load a pre-trained model and use it for the inference.
You can't because the Go implementation lacks the Variable support, therefore it's impossible to train anything at the moment.
I am currently studying Datalog for my report in class, I only need to discuss basic syntax and a basic example.
I know Datalog is usually used as a query language and is usually only implemented to other languages such as Java, Lua, C, etc. but is it possible to teach Datalog only by itself, or am I required to use another language implementing it to show a simple working program?
There are a few online demos you can use:
http://iris-reasoner.org/demo
http://ysangkok.github.io/mitre-datalog.js/wrapper.html
https://repl.logicblox.com/ (docs here:
https://developer.logicblox.com/content/docs4/tutorial/repl/section/split.html )
I haven't tried it myself yet, but http://abcdatalog.seas.harvard.edu also looks nice and easy to run.
A complete overview is on Wikipedia: https://en.wikipedia.org/wiki/Datalog
Is there a way to get all parametric distributions in Mathematica as a list without typing it all?
{NormalDistribution[x,y], UniformDistribution[{x,y}], ExponentialDistribution[x]...}
Thanks!
Try
Names["*Distribution"]
and use this list of symbol to construct what you need. You might want to refer to the help for "ToExpression", "StringJoin".
I am playing with the Racket recently, currently implementing a lexer for a subset of scripting language...and wondering whether there are more examples to show how to use the lexer generator in Racket?
I understand the calculator example in the doc, but it is too simple to show the full features...
I am especially curious how to reference position of each character....
The libraries at PLaneT are a great resource for more elaborate examples.
Try for example the Infix Parser .
Duplicate
Best algorithm for evaluating a mathematical expression?
mathematical expression parser in Delphi?
I need a program in Delphi that get one variable equation from Edit1 such as "F(x)=4*X+2*log(x)+4*power(X,2)"and get X value variable from Edit2 then show the result F(X) in Edit3. Please help me.
Thanks.
You probably need to have a look at this component - TbcParser.
http://www.bestcode.com/html/tbcparser.html
This component has source code included.
You can also check out JCL, which comes with an expression evaluator in the file JclExprEval.pas. It's free and open source.
Have a look at
http://www.efg2.com/Lab/Library/Delphi/MathFunctions/Parsers.htm
Also, if you have JEDI and/or FastReport libraries installed you can use their parsers. We use TParser10 from http://cc.embarcadero.com/item/15974 which is one of the fastest available if not the fastest. It is freeware and work flawlessly up to D2007. I heard that it works also in D2009. Not tested yet though.
If you want to write an own implementation and not use a ready to use library this will take you some time to do. Just search for "formula parser". I would start with a tokenizer and then build a parse tree from the tokens.
It STRONGLY depdends on your decimal separator. Use StrToFloat or in newewr versions of Delphi - TryStrToFloat.