Machine Learning

Use AI to generate a optimized stock portfolio

AIPortfolio Logo Use AI, Modern Portfolio Theory, and Monte Carlo simulation’s to generate a optimized stock portfolio that minimizes risk while maximizing returns. How does it work? The app works by pulling the stock close data from the yahoo finance api. We then calculate the log returns and the volitility of the data to see what the overall trend for the stocks look like. We then generate random portfolio weights and use scipy to maximize a function that calculates the […]

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Machine Learning

A Neural Algorithm of Artistic Style implementation – Neural Style Transfer

ArtiStyle To quote authors Leon A. Gatys, Alexander S. Ecker, Matthias Bethge, “in light of the striking similarities between performance-optimised artificial neural networks and biological vision, our work offers a path forward to an algorithmic understanding of how humans create and perceive artistic imagery. The idea of Neural Style Transfer is taking a white noise as an input image, changing the input in such a way that it resembles the content of the content image and the texture/artistic style of […]

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WebAssembly

Python with the scientific stack compiled to WebAssembly

Pyodide Pyodide may be used in any context where you want to run Python inside a web browser. Pyodide brings the Python 3.8 runtime to the browser via WebAssembly, along with the Python scientific stack including NumPy, Pandas, Matplotlib, SciPy, and scikit-learn. The packages directory lists over 75 packages which are currently available. In addition it’s possible to install pure Python wheels from PyPi. Pyodide provides transparent conversion of objects between Javascript and Python. When used inside a browser, Python […]

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NLP

What they do when in doubt: a study of inductive biases in seq2seq learners

Abstract Sequence-to-sequence (seq2seq) learners are widely used, but we still have only limited knowledge about what inductive biases shape the way they generalize. We address that by investigating how popular seq2seq learners generalize in tasks that have high ambiguity in the training data. We use four new tasks to study learners’ preferences for memorization, arithmetic, hierarchical, and compositional reasoning. Further, we connect to Solomonoff’s theory of induction and propose to use description length as a principled and sensitive measure of […]

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Advanced, NLP, Python, Text

AIML – A Language for Chatbots

This article was published as a part of the Data Science Blogathon. What is a Chatbot? Chatbots are intelligent digital assistants which may address customer’s basic and predictable queries. They offer numerous services via chatting and perform basic customer service operations. Chatbots work 24/7 and hence they provide assistance when offices are closed on holidays. There are a variety of synonyms for chatbot, including “talkbot,” “bot,” “IM bot,” “interactive agent” or “artificial conversation entity.“ Most organizations have already started implementing […]

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Images

Turn xarray timestacks into GIFs with python

GeoGIF Make GIFs from time-stacked xarray.DataArrays (time, [optional band], y, x), dead-simple. from geogif import gif, dgif gif(data_array) dgif(dask_data_array).compute() The “geo” part is a lie, actually. The arrays don’t have to be geospatial in nature. But I called it GeoGIF because: Wanting to animate a time-stack of imagery (like you’d get from stackstac) is a common task in the earth-observation/geospatial world. I think GeoGIF is a hilarious idea1. 1: To ruin the joke, it sounds like GeoTIFF, a ubiquitous geospatial […]

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Games

A Python library for the development of multimedia applications like video games

pygame pygame is a free and open-source cross-platform library for the development of multimedia applications like video games using Python. It uses the Simple DirectMedia Layer library and several other popular libraries to abstract the most common functions, making writing these programs a more intuitive task. Installation pip install pygame Help If you are just getting started with pygame, you should be able to get started fairly quickly. Pygame comes with many tutorials and introductions. There is also full reference […]

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Images

Imaging Library adds image processing capabilities to your Python interpreter

Pillow Pillow is the friendly PIL fork by Alex Clark and Contributors. PIL is the Python Imaging Library by Fredrik Lundh and Contributors. As of 2019, Pillow development is supported by Tidelift. The Python Imaging Library adds image processing capabilities to your Python interpreter. This library provides extensive file format support, an efficient internal representation, and fairly powerful image processing capabilities. The core image library is designed for fast access to data stored in a few basic pixel formats. It […]

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Json

Declaratively specify how to extract elements from a JSON document with python

JMESPath JMESPath (pronounced “james path”) allows you to declaratively specify how to extract elements from a JSON document. For example, given this document: {“foo”: {“bar”: “baz”}} The jmespath expression foo.bar will return “baz”. JMESPath also supports: Referencing elements in a list. Given the data: {“foo”: {“bar”: [“one”, “two”]}} The expression: foo.bar[0] will return “one”. You can also reference all the items in a list using the * syntax: {“foo”: {“bar”: [{“name”: “one”}, {“name”: “two”}]}} The expression: foo.bar[*].name will return [“one”, […]

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