numpy Archives - Petamind https://petaminds.com/tag/numpy/ A.I, Data and Software Engineering Tue, 05 Oct 2021 06:07:38 +0000 en-US hourly 1 https://wordpress.org/?v=6.9.4 https://petaminds.com/wp-content/uploads/2019/09/ic_launcher.png numpy Archives - Petamind https://petaminds.com/tag/numpy/ 32 32 Fast uniform negative sampling for rating matrix https://petaminds.com/fast-uniform-negative-sampling-for-rating-matrix/ https://petaminds.com/fast-uniform-negative-sampling-for-rating-matrix/#comments Fri, 21 Feb 2020 10:07:13 +0000 https://petaminds.com/?p=2250 Sometimes, we want to reduce the training time by using a subset of a very large dataset while the negative samples outnumbers the positive ones, e.g. word embedding. Another situation when we deal with implicit data. In this case, we may need to populate new data for negative values. This post demonstrates how to generate […]

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]]> https://petaminds.com/fast-uniform-negative-sampling-for-rating-matrix/feed/ 1 Dimension, Dimension, Dimension – Reshape your data https://petaminds.com/dimension-dimension-dimension-reshape-your-data/ https://petaminds.com/dimension-dimension-dimension-reshape-your-data/#respond Mon, 28 Oct 2019 21:45:59 +0000 https://petaminds.com/?p=1553 The most basic yet important thing when working with data array is its dimensions. This article will cover several data shapes and reshaping techniques. Why need reshaping data Imagine that you are starving and suddenly given a piece of delicious food. You may try to put it all in your mouth (Fig 1a) and find […]

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