Giving you fresher, more recent search results

Search results, like warm cookies right out of the oven or cool refreshing fruit on a hot summer’s day, are best when they’re fresh. Even if you don’t specify it in your search, you probably want search results that are relevant and recent.

If I search for [olympics], I probably want information about next summer’s upcoming Olympics, not the 1900 Summer Olympics (the only time my favorite sport, cricket, was played). Google Search uses a freshness algorithm, designed to give you the most up-to-date results, so even when I just type [olympics] without specifying 2012, I still find what I’m looking for.

Given the incredibly fast pace at which information moves in today’s world, the most recent information can be from the last week, day or even minute, and depending on the search terms, the algorithm needs to be able to figure out if a result from a week ago about a TV show is recent, or if a result from a week ago about breaking news is too old.

We completed our Caffeine web indexing system last year, which allows us to crawl and index the web for fresh content quickly on an enormous scale. Building upon the momentum from Caffeine, today we’re making a significant improvement to our ranking algorithm that impacts roughly 35 percent of searches and better determines when to give you more up-to-date relevant results for these varying degrees of freshness.

• Recent events or hot topics. For recent events or hot topics that begin trending on the web, you want to find the latest information immediately. Now when you search for current events like [occupy oakland protest], or for the latest news about the [nba lockout], you’ll see more high-quality pages that might only be minutes old. 

• Regularly recurring events. Some events take place on a regularly recurring basis, such as annual conferences like [ICALP] or an event like the [presidential election]. Without specifying with your keywords, it’s implied that you expect to see the most recent event, and not one from 50 years ago. There are also things that recur more frequently, so now when you’re searching for the latest [NFL scores], [dancing with the stars] results or [exxon earnings], you’ll see the latest information. 

• Frequent updates. There are also searches for information that changes often, but isn’t really a hot topic or a recurring event. For example, if you’re researching the [best slr cameras], or you’re in the market for a new car and want [subaru impreza reviews], you probably want the most up to date information. 

There are plenty of cases where results that are a few years old might still be useful for you. [fast tomato sauce recipe] certainly saved me after a call from my wife reminded me I had volunteered to make dinner! On the other hand, when I search for the [49ers score], a result that is a week old might be too old.

Different searches have different freshness needs. This algorithmic improvement is designed to better understand how to differentiate between these kinds of searches and the level of freshness you need, and make sure you get the most up to the minute answers.

Update 11/7/11: To clarify, when we say this algorithm impacted 35% of searches, we mean at least one result on the page was affected, as opposed to when we've said noticeably impacted in the past, which means changes that are significant enough that an average user would notice. Using that same scale, this change noticeably impacts 6 - 10% of searches, depending on the language and domain you're searching on.

Posted by Amit Singhal, Google Fellow

(Cross-posted on the Inside Search blog)

Another look under the hood of search

(Cross-posted on the Inside Search blog and the Public Policy blog)

Over the past few years, we’ve released a series of blog posts to share the methodology and process behind our search ranking, evaluation and algorithmic changes. Just last month, Ben Gomes, Matt Cutts and I participated in a Churchill Club event where we discussed how search works and where we believe it’s headed in the future.

Beyond our talk and various blog posts, we wanted to give people an even deeper look inside search, so we put together a short video that gives you a sense of the work that goes into the changes and improvements we make to Google almost every day. While an improvement to the algorithm may start with a creative idea, it always goes through a process of rigorous scientific testing. Simply put: if the data from our experiments doesn’t show that we’re helping users, we won’t launch the change.



In the world of search, we’re always striving to deliver the answers you’re looking for. After all, we know you have a choice of a search engine every time you open a browser. As the Internet becomes bigger, richer and more interactive it means that we have to work that much harder to ensure we’re unearthing and displaying the best results for you.

Posted by Amit Singhal, Google Fellow

Inside Google's search office

(Cross-posted on the Inside Search Blog)

I’ve been working with Matt Cutts and Ben Gomes in the same office for over 10 years. We work on search every day, and earlier this week, we took our office talk to the stage at an event hosted by the Churchill Club. Search Engine Land’s Danny Sullivan moderated our in-depth discussion on search, how it works, and what’s ahead for us in the future. We also reminisced about first joining Google, the time my car ran out of gas as Ben and I discussed a change to the algorithm, and other great memories over the years.

Come sit inside our office for a chat about Google Search:

• To hear more about the principles that drive changes to the algorithm and how these changes are tested and implemented, go to 15:40
• To hear the discussion on why we don’t hand-pick results, start watching at 41:04
• For more on my vision for the future of search, jump to 1:12:28
• Guess who Danny thinks is the brains, looks, and brawn of this operation at 1:08 (hint: I’m the brains).
  

Posted by Amit Singhal, Google Fellow

Google Commerce Search 3.0: You won’t believe it’s online shopping

When we first introduced Google Commerce Search—our search solution for e-commerce websites—our focus was on improving search quality and speed to help online shoppers find what they’re looking for. Retailers such as Woodcraft Supply, BabyAge.com and HealthWarehouse.com implemented Google Commerce Search on their respective websites; Woodcraft increased search revenues 34 percent, BabyAge increased site searches 64 percent and HealthWarehouse saw online conversions increase 19 percent—and all have reported an increase in customer satisfaction.

Today we’re building on the capabilities that have proved useful to our retail partners with the third-generation Google Commerce Search (GCS). With this new version, we hope to help create an even more interactive and engaging experience for shoppers and retailers.



Here are some of the cool new features in GCS 3.0:

• Search as You Type provides instant gratification to shoppers, returning product results with every keystroke, right from the search bar
• Local Product Availability helps retailers bridge online and offline sales by showing shoppers when a product is also available in a store nearby—in-line with the search results
• Enhanced Merchandising tools allow retailers to create product promotions that display in banners alongside related search queries, and to easily set query-based landing pages (for example, when a visitor types [shoes], they’re directed to a “shoe” page)
• Product Recommendations (Labs) helps shoppers make purchase decisions by showing them what others viewed and ultimately bought

Search As You Type on www.babyage.com

With this release we're also welcoming three new retail partners: Forever21, General Nutrition Company (GNC) and L’Occitane. GNC implemented Google Commerce Search in less than a week on their mobile website, while Forever 21 and L’Occitane are currently working to implement various new features of GCS, such as Search as You Type and Local Product Availability. Here’s what Christine Burke, VP of International E-Commerce at cosmetics staple L’Occitane had to say about GCS 3.0:

L’Occitane is unique in that our beauty products center around ingredients—such as lavender, shea butter and verbena. As our customers visit our re-designed website to shop and research our products, we’re excited about the speed and accuracy of on-site search results that will be provided to us through Google Commerce Search. We’re also very excited about the possibility of the new local inventory feature, which can help us connect our customers with their favorite products in one of our 170 U.S. boutiques.

For more information, visit google.com/commercesearch.

Posted by Tianyu Wen, Software Engineer, Google Commerce Search