Scalable Collaborative Filtering Recommendation Algorithms on Apache SparkEvan Casey
![Hands on Mahout!](https://cdn-ak-scissors.b.st-hatena.com/image/square/4edf27d57c5046e50bff6015d15532e0bbcbc5e1/height=288;version=1;width=512/https%3A%2F%2Fcdn.slidesharecdn.com%2Fss_thumbnails%2Foscon-mahout-2011-110727195459-phpapp02-thumbnail.jpg%3Fwidth%3D640%26height%3D640%26fit%3Dbounds)
Takahiro NohdomiSystems Engineer & Project Leader at QUEST Co., Ltd.
Communications and cooperation between development and operations isn't optional, it's mandatory. Flickr takes the idea of "release early, release often" to an extreme - on a normal day there are 10 full deployments of the site to our servers. This session discusses why this rate of change works so well, and the culture and technology needed to make it possible.Read less
There are several techniques and tools for creating interactive graphics on webpages, including InfoViz, Raphaël, jQuery Visualize Plugin, Protovis, and Processing.js. Jacques Bertin's Semiology of Graphics provides a theoretical foundation for understanding how data can be visually encoded and decoded through signs and symbols. WebGL is an emerging technology that may allow for more advanced 3D g
With the release of MongoDB 3.4, the number of applications that can take advantage of MongoDB has expanded. In this session we will look at using MongoDB for representing graphs and how graph relationships can be modeled in MongoDB. We will also look at a new aggregation operation that we recently implemented for graph traversal and computing transitive closure. We will include an overview of the
This document discusses MongoDB indexing and query optimization. It defines what indexes are, how they are stored and used to improve query performance. It provides examples of different types of queries and whether they can utilize indexes, including compound, geospatial and regular expression indexes. It also covers index creation, maintenance and limitations.Read less
Indexes are references to documents that are efficiently ordered by key and maintained in a tree structure for fast lookup. They improve the speed of document retrieval, range scanning, ordering, and other operations by enabling the use of the index instead of a collection scan. While indexes improve query performance, they can slow down document inserts and updates since the indexes also need to
Keiichiro OnoSoftware Engineer Specialized in Data Visualization and Bioinformatics. Data Visualization Japan co-organizer.
The document provides an overview of graph databases and their advantages over traditional relational databases for storing and querying graph data. It discusses how graphs are represented in different database systems like RDBMS, NoSQL, and graph databases. It provides examples of graph queries and recommendations. Graph databases allow for faster traversal and retrieval of connected nodes compar
2011年4月2日に開催されたPHPカンファレンス関西で使用した「スマートフォンサイトの作成術」のスライドです。Read less
リリース、障害情報などのサービスのお知らせ
最新の人気エントリーの配信
処理を実行中です
j次のブックマーク
k前のブックマーク
lあとで読む
eコメント一覧を開く
oページを開く