Product Strategy Means Saying No If you’re building a product, you have to be great at saying No. Not ‘maybe’ or ‘later’. The only word is No. Cluster analysis The result of a cluster analysis shown as the coloring of the squares into three clusters. Cluster analysis or clustering is the task of grouping a set of objects in such a way that objects in the same group (called a cluster) are more similar (in some sense or another) to each other than to those in other groups (clusters). It is a main task of exploratory data mining, and a common technique for statistical data analysis, used in many fields, including machine learning, pattern recognition, image analysis, information retrieval, and bioinformatics.
What the heck is an interest graph? Pearltrees raises $6.6M to show us Social curation startup Pearltrees has just sealed a deal for €5 million (around $6.6 million), all in the name of creating a better interest graph. Much is being made in current social media circles of the “interest graph” concept, which is more about what you know than who you know, and which purportedly has strong connections to purchase intent and other matters of concern to online marketers. Put differently, while social networks like Facebook focus on what you have in common with your friends and how you react to friends’ recommendations, interest graph-based models (like the ones behind Pinterest, GetGlue or Foodspotting) make social connections based on shared interests, not the other way around. “Pearltrees has leveraged social curation to create an open and collaborative interest graph of the Web,” said Pearltrees CEO Patrice Lamothe in a release.
Le travail collaboratif : comment créer les conditions favorables ? - techtoc.tv, web-tv Dans la foulée du premier plateau sur la collaboration en entreprise, cette seconde partie explorera les conditions pour créer un environnement propice à la collaboration. Qui doit le mettre en place ? Et comment ? Pour répondre à l'invitation à participer à ce tournage, veuillez sélectionner l'option appropriée ci-dessous. I confirm my response, and also send a word to the organizers: Below, I explain my motivation to the organizers: Pearltrees: 3 years and €8.5 million later, there's finally talk of a business model In Europe, as many of you may already know, people tend to talk about business models much earlier in the game than they do in the US. In fact, it’s a widely-held belief that European investors don’t tend to invest in companies that aren’t generating cash (which many believe explains the French VCs’ love for e-commerce). While US companies like Instagram, Pinterest, Quora and the likes are busy amassing millions upon millions of non-paying users prior to even talking about their business models (oh wait, Pinterest actually does make money?)
grid scale In his book Cybernetics, mathematician Norbert Wiener asked “How is it that thousands of neurons or fireflies or crickets can suddenly fall into step with one another, all firing or flashing or chirping at the same time, without any leader or signal from the environment?” The question is at the heart of many network theories, which try to understand how a large number of interacting systems enter into collective and synchronized behavior. In Physical Review Letters, Martin Rohden and colleagues at the Max Planck Institute in Göttingen, Germany, use network theory to study the synchronization properties of electric power grids.
Pearltrees Brings Your Interest Graph' to the iPad One of the more buzzword-y buzzwords in Silicon Valley right now is the "interest graph," which is supposed to connect people and the topics that they're interested in. Lots of startups promise to tap into the interest graph, but Pearltrees CEO Patrice Lamothe says a new app from his startup is "maybe the first time you actually see an interest graph." The new feature, which Lamothe variously describes as "visual discovery" (his pitch to the tech press) and "related interests" (what it's actually called in the app), is included in the just-launched iPad application from the previously Web-only company. Related interests have also been added to the Pearltrees website, but Lamothe is clearly more excited by the iPad version—he warned that the Web experience probably isn't quite as good. That kind of self-deprecation from a startup CEO is a little strange, except that the Pearltrees iPad app is pretty impressive.
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