少ないデータでAIが作れる技術「スパースモデリング」とは?

「スパースモデリング」と呼ばれるデータ分析手法をご存知だろうか。わずかなデータからでもAIモデルを構築可能な技術であり、2019年にイベント・ホライズン・テレスコープが公開した、ブラックホールシャドウの撮影に利用された手法としても知られる。

スパースモデリングは膨大な量のデータから学習するディープラーニングとは反対に、わずかなデータ量からでもAIを構築可能であり、AIが結論を導く過程が人間にも理解しやすく、AIのブラックボックス化問題の回避も可能だという。

独自のスパースモデリング技術をAIに応用してデジタルソリューションを開発する、AIスタートアップ HACARUSの代表取締役 CEO 藤原健真氏に、同技術の概要と今後の発展性について話を聞いた。

Let’s Encrypt’s root certificate is about to expire, and it might break your devices

One of the largest providers of HTTPS certificates, Let’s Encrypt, saw its root certificate expire this week — meaning you might need to upgrade your devices to prevent them from breaking.

Let’s Encrypt, a free-to-use nonprofit, issues certificates that encrypt the connections between your devices and the wider internet, ensuring that nobody can intercept and steal your data in transit. Millions of websites alone rely on Let’s Encrypt. But, as warned by security researcher Scott Helme, the root certificate that Let’s Encrypt currently uses — the IdentTrust DST Root CA X3 — was set to expire on September 30. After expiry, computers, devices and web clients — such as browsers — will no longer trust certificates that have been issued by this certificate authority.

Open source + book!

A simple, open hardware device for reading that anyone can build for themselves

The Open Book Project

Purchase the E-Book FeatherWing PCB on Tindie
Purchase the Open Book PCB on Tindie
Setup guide for the E-Book Wing (and Assembly Video)
Setup guide and documentation for the Open Book
Project page on Hackaday.io
Mailing list signup; I haven’t sent anything yet, but when I have something big to share, you’ll get it there.
With that out of the way, on with the readme!

As a society, we need an open source device for reading. Books are among the most important documents of our culture, yet the most popular and widespread devices we have for reading — the Kobo, the Nook, the Kindle and even the iPad — are closed devices, operating as small moving parts in a set of giant closed platforms whose owners’ interests are not always aligned with readers’.

OpenAI unveils model that can summarize books of any length

OpenAI has developed an AI model that can summarize books of arbitrary length. A fine-tuned version of the research lab’s GPT-3, the model works by first summarizing small sections of a book and then summarizing those summaries into higher-level summaries, following a paradigm OpenAI calls “recursive task decomposition.”

Summarizing book-length documents could be valuable in the enterprise, particularly for documentation-heavy industries like software development. A survey by SearchYourCloud found that workers take up to eight searches to find the right document, and McKinsey reports that employees spend 1.8 hours every day — 9.3 hours per week, on average — searching and gathering job-related information.

IBM Physicist Demonstrates Why a Roomba Can’t Clean His House

When a robot vacuum sees black stripes on a rug as ‘cliffs’ your floors will remain dusty.

iRobot may have impressed us recently with its latest robot vacuum capable of detecting and avoiding dog poop around the home. However, there’s a much more common object found on floors that presents a big challenge for the tiny robots.

Dmitry Krotov is a physicist working on neural networks and machine learning at IBM. It makes sense that someone with that day job would choose to rely on an intelligent vacuum to clean his house while he’s at work, but the problem is, his Roomba won’t carry out the task.