February 15, 2008

Inside EveryBlock

Rex Sorgatz had An Interview with Adrian Holovaty. Adrian created ChicagoCrime.org (now redirects to his new venture, EveryBlock) back when we would have to use hacked methods (rather than an API) to use google maps (such as the Google Maps Standalone method).

Adrian talks about some of the challenges at EveryBlock which definitely rang a bell with me. Here are a few interesting passages that developers in the local space and/or aggregators of data may be able to relate with:


One of our post-launch priorities is to clean up the fire-hose of raw information, to introduce concepts of priority and improved relevance — but I do think there’s a certain appeal to that raw dump of “here’s everything that’s happened around this address, in simple, reverse-chronological order.” When significant events happen, they sort of “POP out” of the list.

The first layer is the army of scripts that compile data from all over the Web. This includes public APIs, private APIs, screen-scraping the “deep Web,” crawling news sites, plus harvesting data from PDFs and other non-Web-friendly documents. Some data also comes to us manually, like in spreadsheets e-mailed to us on a weekly basis. For each bit of data, we determine geographic relevance and normalize it so that it fits into our system.

The second layer is the data storage layer, which we built in a way that can handle an arbitrary number of data types, each with arbitrary attributes. For example, a restaurant inspection has a violation (or multiple violations), whereas a crime has a crime type (e.g., homicide). Of course, we want to be able to query across that whole database to get a geographic “slice,” so there’s a strong geo focus baked into everything.

The user interface was, and continues to be, a challenge. How do you display so many disparate pieces of data together, without overwhelming people?

Dealing with structured data is relatively easy, but attempting to determine structure from unstructured data is a challenge. The main example of unstructured data parsing is our geocoding of news articles. We do a pretty good job here, but we’re not crawling all of the sources we want to crawl — again, there’s a lot of room to grow.

On a completely different note, it’s been a challenge to acquire data from governments. We (namely Dan, our People Person) have been working since July to request formal data feeds from various agencies, and we’ve run into many roadblocks there, from the political to the technical. We expected that, of course, but the expectation doesn’t make it any less of a challenge.

Rather than use Google Maps or Microsoft’s Virtual Earth, you built your own mapping service application. Why?

That, along with “When will you bring EveryBlock to city XXX?”, is by far the most frequently asked question we get. Paul, our developer in charge of maps, is working on an article explaining our reasoning, so I don’t want to steal his thunder. I’ll just say that the existing free maps APIs are optimized for driving directions and wayfinding, not for data visualization. And, besides, having non-clich├ęd maps is an easy way to set yourself apart. Google Maps is so 2005. ;-)

We use an open-source library called Mapnik to render the maps, so that library does the heavy lifting for us. Paul is also working on a how-to article, in the spirit of giving back to the open-source community, that explains how to use Mapnik.

I strongly suspect we’ll have an API eventually

[via kottke]

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Mobile World Panel on Apple’s Success

The Mobile World Panel had an interesting analogy in trying to describe the iPhone’s success:

Panelist Mike Yonker, general manager of worldwide strategy and operations for Texas Instruments’ wireless terminals business unit, said that the way for the user to get the rich content now available on a mobile handset is through the “search” function. But this isn’t so easy. He compared the limitations of a mobile handset to a full personal computer screen.

Searching on a computer, he said, is like going to a store, where the customers sees every product displayed, and can make comparisons, touch the products, even try things on for size. Doing the same search on a mobile, he said, but like trying to shop in the same store but “through a drive-up window.” No matter how much stuff is in the store, you can only find out through the cashier at the drive-up window.

The dilemma, left unsolved by the panelists, was how to squeeze the user through that window, past the cashier, to sample all the things in the store, without guilt, while still feeling grateful to the cashier who seemed, all along, to be standing in the way.

Everyone agreed that, so far, only Apple has been able to turn this trick. For users, “the content is the core,” said Lipman of Power2B somewhat ruefully, “and we have to get out of their way.”

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February 1, 2008

Microsoft Makes $44.6 Billion Bid for Yahoo

Amid all the recent Yahoo problems, Microsoft has stepped in and made a $44.6 Billion bid for a Yahoo takeover (that’s $31 per share).

This was revealed in a letter from Steve Ballmer to Yahoo’s Board. Valleywag claims to have a copy of the letter:

I am writing on behalf of the Board of Directors of Microsoft to make a proposal for a business combination of Microsoft and Yahoo!. Under our proposal, Microsoft would acquire all of the outstanding shares of Yahoo! common stock for per share consideration of $31 based on Microsoft’s closing share price on January 31, 2008, payable in the form of $31 in cash or 0.9509 of a share of Microsoft common stock.

Our proposal represents a 62% premium above the closing price

In February 2007, I received a letter from your Chairman indicating the view of the Yahoo! Board that “now is not the right time from the perspective of our shareholders to enter into discussions regarding an acquisition transaction.”

Today, the market is increasingly dominated by one player who is consolidating its dominance through acquisition. Together, Microsoft and Yahoo! can offer a credible alternative for consumers, advertisers, and publishers. Synergies of this combination fall into four areas…
– Scale economics…
– Expanded R&D capacity…
– Operational efficiencies…
– Emerging user experiences…

Our proposal is subject to the negotiation of a definitive merger agreement and our having the opportunity to conduct certain limited and confirmatory due diligence.

Google is doing such a job at dominating the search market that even after Yahoo and Microsoft combine their marketshares, here is what it looks like according to Erick Schonfeld at Techcrunch:

MSFT/YHOO: 32.7%
GOOG: 58.4%

The $31 per share bid has already driven YHOO stock up to nearly $30 per share this morning (previous day’s close was $19.18).

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