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Category: Construction Engineering

ReCNet: Deep Learning based Cross-class Recommendations at Wayfair

Introduction The main objective of our recommender systems is to narrow down Wayfair’s vast catalogue to assist customers in finding exactly the products they want. Most recommendation algorithms leverage a customer’s browsing history, which includes various types of interactions with products, such as clicks, add-to-cart actions, and orders. The diversity of each customer’s browsing history makes the task of fully leveraging the information it contains quite difficult. One of the challenges with a diverse browsing history is determining whether we…

Solar at Tipping Point of Mass Adoption in EVs, Says IDTechEx

Testing self-driving cars these days is common, but VSI Labs needed to test various autonomous-vehicle (AV) applications. So, the company took its research vehicle (Fig. 1) on two unprecedented cross-country journeys. I talked with Katelyn Abel, Marketing & Communications Manager at VSI Labs, about its research and those excursions. 1. The VSI Labs research vehicle stops in the Badlands on the Drive West. What was the purpose of the Drive West & East? Neither drive was about proving the capabilities…

Recapping VSI Labs’ Automated Drive West & East

Testing self-driving cars these days is common, but VSI Labs needed to test various autonomous-vehicle (AV) applications. So, the company took its research vehicle (Fig. 1) on two unprecedented cross-country journeys. I talked with Katelyn Abel, Marketing & Communications Manager at VSI Labs, about its research and those excursions. 1. The VSI Labs research vehicle stops in the Badlands on the Drive West. What was the purpose of the Drive West & East? Neither drive was about proving the capabilities…

The Garrity KE900 Flashlight Teardown

I have nine Garrity rechargeable flashlights. They plug into a wall socket to charge, and when power fails, the flashlight goes on, serving as an emergency lamp. What I love about this discontinued Garrity flashlight is that it uses AAA NiMH cells. When they get worn out, you can remove a single screw from the grip, and pop in three new battery cells. The flashlight is good as new. I also love that it is just small enough I can…

Introducing Load Balancing Analytics

Cloudflare aspires to make Internet properties everywhere faster, more secure, and more reliable. Load Balancing helps with speed and reliability and has been evolving over the past three years. Let’s go through a scenario that highlights a bit more of what a Load Balancer is and the value it can provide.  A standard load balancer comprises a set of pools, each of which have origin servers that are hostnames and/or IP addresses. A routing policy is assigned to each load…

The Top 2019 LinkedIn Engineering Blogs

As the year draws to a close, we’re taking a look back at ten of our most popular 2019 articles on the LinkedIn Engineering Blog. Examining the list, it’s clear that topics pertaining to open source and artificial intelligence are some of the most popular, as are posts that look at how we tackle technical challenges at scale. We’re excited to share new progress and updates in all of these areas in the new year, but in the meantime, take…

Eliminating toil with fully automated load testing

Figure 1: Stickyrouting and LinkedIn traffic routing architecture   From there, our Stickyrouting service assigns a primary data center and secondary data center for each member. This assignment takes place using a Hadoop job that runs in a regular interval and assigns each member a primary and secondary data center based on geographic distances between members and the data center, while also considering the capacity constraints of each data center. When a primary data center for a member is offline, the…

Better Android Testing at Airbnb — Part 3: Interaction Testing

Part two of this series covered our screenshot testing approach. As our first integration tests, screenshots filled a gaping whole in our testing strategy and were immediately effective at catching regressions and improving our developer experience. But while they cover a large swath of our app’s UI code, they provide no insight into the correctness of code that is run when the user interacts with the UI, such as click handling. This “interaction handling” code can contain complicated logic and…

Full Stack Serverless, Serverless Architecture Reference Guides, and more

Check out our tenth edition of The Serverlist below. Get the latest scoop on the serverless space, get your hands dirty with new developer tutorials, engage in conversations with other serverless developers, and find upcoming meetups and conferences to attend. Sign up below to have The Serverlist sent directly to your mailbox. Source link…

Researchers study chickens, ostriches, penguins to learn how flight feathers evolved — ScienceDaily

If you took a careful look at the feathers on a chicken, you’d find many different forms within the same bird — even within a single feather. The diversity of feather shapes and functions expands vastly when you consider the feathers of birds ranging from ostriches to penguins to hummingbirds. Now, researchers reporting in the journal Cell on November 27 have taken a multidisciplinary approach to understanding how all those feathers get made. “We always wonder how birds can fly…