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What is Not Search?
From The Noisy Channel

What is Not Search?

When all you have is a hammer, everything looks like a nail. Search is unquestionably my hammer, so it’s easy for me to frame everything as a search problem. After...

Let’s Talk About Resume Screening
From The Noisy Channel

Let’s Talk About Resume Screening

With apologies to Bruno, we don’t talk about resume screening. But we should.Resume screening is usually the first step in the hiring process for active candidates...

Technical Interviewing: Be Better
From The Noisy Channel

Technical Interviewing: Be Better

Technical interviewing is hard, but that’s no excuse for it to be so terrible. Since candidates generally don’t have much leverage to negotiate the interview process...

Query Similarity
From The Noisy Channel

Query Similarity

I started writing about query understanding in 2016, working my way up from low-level concerns like language identification and character normalization to higher...

Information Extraction
From The Noisy Channel

Information Extraction

When we index content for search, it’s natural to think in terms of documents. But searchers aren’t necessarily looking for documents. They’re looking for information...

Content Understanding
From The Noisy Channel

Content Understanding

This publication is a series of posts devoted to content understanding. Each post is self-contained, but there is a natural progression. If you’d like to read them...

Content Moderation
From The Noisy Channel

Content Moderation

Many platforms, particularly social media sites and ecommerce marketplaces, establish policies to determine what they consider acceptable content. These platforms...

Similarity-Sensitive Diversity
From The Noisy Channel

Similarity-Sensitive Diversity

In my work on search engines and recommender systems, I’ve thought a lot about entropy and diversity. I named my first blog, The Noisy Channel, after a seminalClaude...

Content Quality
From The Noisy Channel

Content Quality

Despite its importance, content quality is hard to define without devolving into circularity. What we mean by content quality is a measure or collection of measures...

Content Structure
From The Noisy Channel

Content Structure

One of the challenges facing search applications is that users aren’t necessarily searching for documents. To put it another way, the unit of content that a user...

Search is Fundamental
From The Noisy Channel

Search is Fundamental

Search engines are at the heart of the digital world. We interact with them on the outside, using search engines to find information, products, and more. But they...

Search: Teaching the Fundamentals
From The Noisy Channel

Search: Teaching the Fundamentals

Earlier this year, Grant Ingersoll and I kicked off a 4-week co:rise course on Search with Machine Learning. We covered search fundamentals, and then went on to...

Content Similarity
From The Noisy Channel

Content Similarity

Content classification and annotation offer useful approaches for content understanding, recognizing whether a piece of content is about a particular topic or mentions...

Content Annotation
From The Noisy Channel

Content Annotation

Content understanding requires both holistic and reductionist approaches, just like query understanding. The previous post focused on content classification asentity...

Content Classification
From The Noisy Channel

Content Classification

The most fundamental form of holistic content understanding is classification. Content classification maps a piece of content — that is, an entry in the searchtaxonomy...

What is Content Understanding?
From The Noisy Channel

What is Content Understanding?

There’s a lot of writing about search — especially about ranking and relevance. And recently there’s been an increased focus on the particular challenges of query...

Thoughts on Search Result Diversity
From The Noisy Channel

Thoughts on Search Result Diversity

Regular readers know that search is about much more than ranking. If you’re new here, you might want to read this post about ranking vs. relevance.But a topic I...

Balance Your Search Budget!
From The Noisy Channel

Balance Your Search Budget!

Search can be computationally intensive. Indeed, search has been the driving force behind many advances in computational efficiency, from MapReduce for distributed...

On Search Leadership
From The Noisy Channel

On Search Leadership

As a high-class consultant, I don’t just talk to companies about the technical aspects of search. I also help them them address organizational challenges.For example...

The Free Advice Club
From The Noisy Channel

The Free Advice Club

The first rule of the Free Advice Club is: you talk about the Free Advice Club! Not like that other club.But I’m getting ahead of myself. I’ve had an extremelyMedium...
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