Tag：vector

Time：20211019
background This article is included inFront end Reading Clubspecial column The content related to texture has been introduced above and implemented in 2D using webgl. Today, we continue the content of the previous lesson. For the 3D implementation of texture, we have absorbed the MDN tutorial mode. I feel that this learning track is also […]

Time：2021106
Introduction:What retrieval technology is used behind Taobao Search recommendation and video search? Unstructured data retrieval, vector retrieval, and multimodal retrieval, what problems do they solve? Today, from the perspective of business issues, the scientists of alidharma Institute have taken a deep dive into the internal technology of alidharma Institute, the vector retrieval engine Proxima, and […]

Time：2021105
So far, we have focused on how to combine two separate floatingpoint features. In practice, machine learning models rarely combine continuous features. However, machine learning models often combine unique feature vectors and regard the feature combination of unique feature vectors as logical connection. For example, Suppose we have the following two features: Country / region […]

Time：2021930
Opening At the beginning, let’s talk about why we wrote such an introductory article on webgl, because our recent work has been devoted to the development of 3D interaction, encapsulating and calling some business layers based on the webgl engine library, and then outputting the API to the front end, which is regarded as beginning […]

Time：2021923
Author  soner y ı ld ı r ı mCompile VKSource: towards Data Science Machine learning and deep learning models need a lot of data. Their performance depends largely on the amount of data. Therefore, we tend to collect as much data as possible to establish a robust and accurate model. Data is collected in […]

Time：2021921
By  mate POCSCompile VKSource: towards Data Science Word2vec is definitely the most interesting concept I have encountered in natural language processing research. Imagine an algorithm that can successfully simulate and understand the meaning of words and their functions in language. It can measure the proximity between words in different topics. I think it would […]

Time：2021912
Support vector machine Given training sample set D = {(x_1, y_1), (x_2, y_2),…, (x_m, y_m)}, y_ I \ in { 1, + 1}, the basic idea of classification learning is to find a partition hyperplane in the sample space based on training set D to separate samples of different categories, but there may be many […]

Time：2021911
Move the middle line parallel to both sides until it passes through one or several training sample points.We record the hyperplane as（W, b)。definition:1. Training data and labels (x_1, y_1) (x_2, y_2)… (x_n, y_n), whereX_iIs a vector, y_ I = + 1 or – 12. A training set is linearly separable Training set: {(x_i, y_i)}_ {i […]

Time：202199
Support vector machine optimization problem (convex optimization problem, quadratic programming problem) 1. Minimize: \ dfrac {1} { w  ^ 2} = \ dfrac {1} {2} (W 1 ^ 2 + W 2 ^ 2 +… + W n ^ 2)2. Subject to: y_ i[W^TX_i + b]\geq 1( i = 1\sim N )The optimization problem […]

Time：202198
By Samrat SahaCompile VKSource: towards Data Science Supervised contractual learning this paper discusses a lot between supervised learning, cross entropy loss and supervised contrast loss, so as to better realize the task of image representation and classification. Let’s take a closer look at the content of this paper. The paper points out that there can […]

Time：202192
By Andy ReaganCompile VKSource: towards Data Science In the world of MATLAB and numerical calculation, the for loop is cut off, and the vector is the king. During my doctoral degree, Professor lakoba’s numerical analysis course was one of the most challenging courses I attended. After the course, I had a deep understanding of vector […]

Time：202191
1、 Background stayprometheusThere are various time series data in, so how can we query the desired data according to the time series? Prometheus provides us with a powerfulPromQL, with the help ofPromQLWe can query the data we want. 2、 Data type of promql Instant vector: a set of time series. Each time series contains one […]