pi2e.ch的 10 大竞争对手

piday.org

Pi Day is celebrated every year on the fourteenth of March around the world, and although we’re not celebrating actual pies, there can be pies involved in the celebration. Pi is used to represent a…

mathworld.wolfram.com

A connected graph G is distance-regular if for any vertices x and y of G and any integers i,j=0, 1, ...d (where d is the graph diameter), the number of vertices at distance i from x and distance j from y depends only on i, j, and the graph distance between x and y, independently of the choice of x and y. In particular, a distance-regular graph is a graph for which there exist integers b_i,c_i,i=0,...,d such that for any two vertices x,y in G and distance i=d(x,y), there are exactly c_i...

mixrank.com

MixRank curates the world’s most updated feed of people, companies, and technographic datasets. Receive data updates at hourly rates.

arxiv.org

A system of non-tradable credits that flow between individuals like karma, hence proposed under that name, is a mechanism for repeated resource allocation that comes with attractive efficiency and fairness properties, in theory. In this study, we test karma in an online experiment in which human subjects repeatedly compete for a resource with time-varying and stochastic individual preferences or urgency to acquire the resource. We confirm that karma has significant and sustained welfare benefits even in a population with no prior training. We identify mechanism usage in contexts with sporadic high urgency, more so than with frequent moderate urgency, and implemented as a simple (binary) karma bidding scheme as particularly effective for welfare improvements: relatively larger aggregate efficiency gains are realized that are (almost) Pareto superior. These findings provide guidance for further testing and for future implementation plans of such mechanisms in the real world.

spectralogic.com

Explore the scalability and storage density of Spectra TFinity tape libraries. Find out how they lead in innovation and proactive media management.

4analytics.ru

Приложение для точного прогнозирования в Excel, не требующее знаний статистики и специальной математической подготовки. Расширенный функционал Novo Forecast PRO позволяет мгновенно перейти от прогнозирования и анализа к планированию продаж.

openspaceproject.com

How can you use OpenSpace to expand your astronomy outreach efforts? Luana Melnek dos Anjos, Astrophysics student at San Francisco State University and presenter at the California Academy of Sciences’ Morrison Planetarium shares her strategies to share space science.

sqliteviz.com

an offline web app that helps you clean and prepare data for rich visualisation with the power of sql without leaving your browser

toukeidata.com

このサイトは、日本や世界の様々な統計データをグラフと共に紹介しています。人口やgdp・鉄道や飛行機などの経済統計から、過去と現在の物価比較、世界のスポーツやマンガ・アニメ・ゲーム業界などエンタメ関連の統計などもまとめています。

credolab.com

Learn how embedded scoring empowers financial institutions with accurate lending decisions, better risk control and enhanced inclusion globally. Join us.