Viewing profile — dtunkelang

In general, the two ways to compute counts are top-down, by making a separate query for each filter, or bottom-up, by scanning the results and aggregating the counts, like a group-…

BTW, I highly recommend the Relevance Slack as a good space to discuss this and search-related topics generally. It's run by OpenSource Connections, but it's free and anyone can jo…

While the acquisition was good for me financially, I agree that Oracle didn't really invest in sustaining Endeca as a product. I am proud of what we achieved at Endeca, but search …

I've found that, for mobile screens, the most valuable refinement real estate is often the top row of the results. Since that space is very limited, there's only room for the most …

Thanks for the kind words! I'm not usually on HN, but I just discovered this thread and am happy to contribute if I have anything useful to add. The book is a bit dated, but I have…

As others have pointed out, most search engines don't support natural language search in general, let alone natural language negation in particular. There are several reasons for t…

Yes, this is real. And she could really use the help. It was very brave of her to come forward this way: she took personal risk, and it's not like she's gaining anything from this …

> "The idea was started because Daniel Tunkelang of Netflix was very anti RSS." Um, what? I've never worked at Netflix, and I've never been anti-RSS. And I'm pretty sure there isn'…

Am curious to see having the dictionary in a trie allows you to build an implementation that is O(n). Will add it to the blog post if it works.

Peter actually emailed me directly, though I was already very familiar with his work on this and similar problems. But yes, I make it very clear in the post (and to candidates) tha…

Sorry. The post renders well in Chrome on my Mac and on my Nexus One. But apparently not so well in other browser / platform combinations.

I don't have stats I can share, but I assure you that this problem has confounded many interview candidates with strong resumes. I agree with you that it's all basic material -- th…

Point taken. But it's hard to come up with good interview questions, as my colleagues here, at Google, and at Endeca can attest. In contrast, it's much easier to post solutions. Th…

Sorry about that. Advice on how to fix it while maintaining good rendering elsewhere? Looks good in Chrome on my MacBook and my Nexus One.

Secret is a strong word -- I link to another post on the subject in the article. Still, seeing it on Glassdoor for my own employer crossed the line of disclosure.

Point taken. I thought of not linking to them, or even not mentioning them. But they do play an important part in the story of the post, and I don't think I'm helping them so much …

Actually, my original implementation used Dijkstra's algorithm. But I think the linear table of suffixes (or prefixes if you prefer) is a cleaner approach.

Exactly. I prefer legal reform too, but something is better than nothing.

Glad to see positive feedback about the PATO proposal. I can't claim credit for originality -- but I was glad that, when I thought of it independently, I was quickly able to discov…

I am glad to finally see this story told in all of its gory detail. As a witness to this story, I was frustrated to see how Arlo and AJ never had a chance to win on the merits of t…

Good to finally see this story told in all of its gory detail. As a witness to this story, I was frustrated to see how Arlo and AJ never had a chance to win on the merits of their …

Would love to hear feedback on the "practical" part of my rant. Unfortunately most of the comments on the post focused on the merits of software patents. Let me be clear (as I am i…