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情報科学科の卒業生やプログラマの中には、UberやNetflixのような新興企業や、 Amazon 、 Microsoft 、 Google のような大企業や、InfosysやLuxsoftのようなサービスを基本とする企業で、プログラミング、コーディング、ソフトウェア開発の仕事に就きたいと考える人が大勢います。しかし、実際にそういった企業で面接を受ける場合、大半の人が プログラミングに関してどのような質問をされるか 見当もつきません。 この記事では、 新卒生からプログラマになって1〜2年までの 経験値が異なる人たち向けに、それぞれの プログラミングの面接でよく聞かれる質問 をいくつか紹介していきます。 コーディングの面接では、主に データ構造とアルゴリズムに基づいた質問 がされますが、 一時変数を使わずにどのように2つの整数をスワップするのか 、というような論理的な質問もされるでしょう。
次元削減とは データの次元削減(Dimensionality reduction) + データの可視化(Data Visualization) PCA Principal Component Analysis(PCA) randomized PCA Online Robust Principal Component Analysis(OR-PCA) 多様体学習 t-Distributed Stochastic Neighbor Embedding(t-SNE) Multidimensional Scaling(MDS) Isomap Locally Linear Embedding (LLE) Laplacian Eigenmaps(LE) Semidefinite Embedding (SDE) Latent Dirichlet Allocation(LDA) Labeled LDA P
Yahoo releases massive 13.5TB web-browsing data set to researchers Yahoo's business may be struggling, but millions of people still visit its site to read the news every day. That gives the company unique insights into browsing and reading habits, and today the company has released a huge swath of that data. The "Yahoo News Feed dataset" incorporates anonymous browsing habits of 20 million users b
最近、「おおおー、これは凄い、すんばらしい!」と思ったことがあるので、それについて書きます。 最初に言葉についてのお断り; "categorical"の訳語をどうしようか? と。片仮名で「カテゴリカル」が無難ですが、漢字で書きたい。「圏論的」が落ち着きがいいようですが、必ずしも「論」の意味を含まないときもあります。そこで、以下、「圏的」を使います。 [追記 date="2013-02-12"]入門的解説を書きました。→「衝撃的なデータベース理論・関手的データモデル 入門」[/追記] スピヴァックと関手的データモデル デイヴィッド・スピヴァック(David I. Spivak, http://math.mit.edu/~dspivak/)は、MITの研究者です。 彼は圏的情報学(categorical informatics)を提唱しています*1。圏的情報学の中心的な概念が関手的データモデル
Stay Relevant and Grow Your Career in TechPremium ResultsPublish articles on SitePointDaily curated jobsLearning PathsDiscounts to dev toolsStart Free Trial7 Day Free Trial. Cancel Anytime. Key Takeaways Storing hierarchical data in a database can be achieved using two major approaches: the adjacency list model and the modified preorder tree traversal algorithm. The adjacency list model is more el
2022/02: FastBit source moved to github 2011/10: DBLunch seminar 2010/7: FastBit in nProbe 2009/9: FastBit in SciDAC review 2008/12: ASCR Disvovery article 2008/07: R&D 100 award 2007/08: FastBit speed up drug discovery tool 2006/03: Prove formal optimality [Draft] 2005/05: Grid Collector wins ISC Award. 2004/12: WAH patent issued. FastBit is an open-source data processing library following the sp
essential information that every serious programmer needs to know about algorithms and data structures Online content. This booksite contains tens of thousands of files, fully coordinated with our textbook and also useful as a stand-alone resource. It consists of the following elements: Excerpts. A condensed version of the text narrative, for reference while online. Lectures. Curated studio-produc
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Motivation A singly linked list is a common data structure familiar to all computer scientists. A singly linked list is made of nodes where each node has a pointer to the next node (or null to end the list). A singly linked list is often used as a stack (or last in first out queue (LIFO)) because adding a new first element, removing the existing first element, and examining the first element are v
Data Compression Explained Matt Mahoney Copyright (C) 2010-2012, Dell, Inc. You are permitted to copy and distribute material from this book provided (1) any material you distribute includes this license, (2) the material is not modified, and (3) you do not charge a fee or require any other considerations for copies or for any works that incorporate material from this book. These restrictions do
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