Archive for Semantic Technologies

Wolfram|Alpha First Impressions

by Celine Roque

In order to make a good impression, one has to be polite. So, I typed in a friendly, “Hi”, and to my surprise, it replied, “Hello, human.” Next, I asked it where it is located. “I live on the Internet.” Fair enough, I suppose. Lastly, I inquired about its nature and it told me, “I am a computational knowledge engine.”

I would’ve liked to carry on a “conversation” with it, but Wolfram|Alpha’s human discourse module has not yet been fully developed. However, I was able to get great information on constellations, compare the GDP of various countries, create a timeline of famous Roman emperors, and get up-to-date weather information, automatically localized to my area. I’m sure that its linguistic abilities will be improved in the near future, though, along with a host of upgrades in keeping with its lofty ideals:

“Wolfram|Alpha’s long-term goal is to make all systematic knowledge immediately computable and accessible to everyone. We aim to collect and curate all objective data; implement every known model, method, and algorithm; and make it possible to compute whatever can be computed about anything. Our goal is to build on the achievements of science and other systematizations of knowledge to provide a single source that can be relied on by everyone for definitive answers to factual queries.”

If you haven’t heard of it yet, this ambitious new tool is the brainchild of scientist Stephen Wolfram, and is unfortunately being touted as the next Google-killer. Unfortunate, because the two have different methods for accomplishing different goals, and therefore shouldn’t be compared as if they were mortal enemies. Google is used to find other websites pertinent to a search term among its enormous index. Meanwhile, Wolfram|Alpha generates new answers based on inquiries, computed real-time from relevant public data. One has a web crawler to broaden its reach, the other has a centralized curation process to comb through data. Both can be very useful in their own ways.

What’s good?

The first thing you’ll notice about Wolfram|Alpha is its clean, minimalist design. It has a text box on top of the page to type your queries in, be it a question or a mathematical formula. It offered fast answers for almost every inquiry I made, and as a data geek I appreciate the graphs what would sometimes accompany the results. In a video on their blog, they said that they are currently averaging at 70% satisfaction rate in terms of giving meaningful answers to queries. The fact that it did not crash during launch last May 18 – even after all the hype it generated – is a testament to their preparedness and awesome infrastructure.

Wolfram|Alpha is great for comparisons: stock fluctuations, box office grosses, demographics by country, timelines of famous people, chemical properties, etc. The technology behind it has an immense potential for custom business applications, enabling managers to pull up and compare sales trends, fiscal reports, and employee retention in a snap. In this sense, I’m not worried about Wolfram|Alpha’s long-term financial viability. I think it can find a way to sustain itself with its focus towards providing a valuable tool for businesses, engineers, college students, scientists, economists, and the like.

What’s bad?

Wolfram|Alpha, striking as it is, is not new or unique (see sCloud), but it’s the first of its kind to create mainstream buzz and its approach is quite promising. The results it churns out are informative, though a bit lacking in depth. At the moment, only US data are abundant while those for most other countries are scarce. Unlike Wikipedia, it has no specific attribution of source per statement/datum. Instead, there is a link at the bottom which shows a general list of all the references for the inquiry. This makes it hard to do quick checks on accuracy.

This tool is best for objective analysis, so you won’t find film reviews, news & opinions, historical accounts, and similar articles here. Neither is it suited for entertainment and other consumer purposes. As of this time, Wolfram|Alpha is said to contains 10+ trillion of pieces of data, 50,000+ types of algorithms and models, and linguistic capabilities for 1000+ domains. This may seem a lot, but it’s really barely scratching the surface of recorded information. I’m not quite sure if they use a form of crawler to automate data gathering, but the curation process being centralized and needing human supervision severely limits the speed of data acquisition. With only less than 100 people in their staff, I wonder how timely and accurate they can add new information, with lots more being generated all the time.

Conclusion

Wolfram|Alpha is an incredible resource for quickly getting organized, factual information, but it’s not for everyone. It’s tag line alone (“computational knowledge engine”) will be enough to make some people scratch their heads. In time, it will find its niche, which will likely be a profitable one if they can manage to keep a high quality of service. Although Wolfram|Alpha has a blog and a community, it’s not open to the general public for editing unlike Web 2.0 sites. This is a walled garden, with experts in every field trying to maintain the purity of their data.

If you haven’t tried Wolfram|Alpha, I’d advise you watch Stephen Wolfram’s helpful video primer. It’s hard not to be blown away by the possibilities.

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Beyond Web 2.0

by Matthew Hodgson

While organisations continue to struggle with adopting E2.0 through Web 2.0 products, some are looking beyond and asking the question “what’s next?”. If Web1.0 was about communication, and Web 2.0 about collaboration, what should we be doing now in order to prepare for the future demands of users and the workplace, and have the upper-hand on competitors?

To prepare for the future we need to understand the evolution of the web, and Gary Hayes suggests that it is moving toward a more immersive environment.

Web 1.0 to Web 3.0

We’re just starting to see that now with Web 2.0 — pushing the boundaries of information sharing from centralised and controlled by organisations to decentralised, collaborative and controlled by consumers. In essence, this means:

  • Web 1.0 - unidirectional and “push”. E.g. traditional brochureware-style websites
  • Web 2.0 – interactive – “push” + “pull”. E.g. Social computing websites like MySpace, Wikipedia, and Facebook
  • Web 3.0 – immersive. E.g. 3D Virtual Worlds and ubiquitous computing
  • Web 4.0, 5.0 … the semantic world with intelligent agents and adaptive information

The real benefits of Web 2.0 and Web 3.0 (as defined by Gary) are just starting to emerge, with online spaces to work and share information, technology that truly supports information anytime and anyplace. Society is witnessing the emergence of digital natives who are born ‘technology aware’ and expect to be able to use the same technology they take for granted in their social lives in the work environment. And while some may have thought that the notion of a truly semantic web was dead and burried, the problems with database interaction and data interoperability to provide true intelligent context to data and information in online environments has raised the issue again:

How can we prepare and provide for the future of the web?

Annie Rowland-Campbell, a researcher with FujiXerox, suggests that we need to start preparing our data systems for the future by using semantic technologies. That is, separating out our data and metadata, and introducing ontologies to articulate the relationships between data sources, and their relationships, in order to provide true context and meaning to information.

data-metadata-and-ontology.jpg

Why separate out these elements? Simply put, traditional database design isn’t scalable to the extent we need to provide for intelligent agents and adaptive information of Web 4.0 and beyond. Even if we’re only dealing with data exchange between 6 stores, for example, to provide a true and complete context of information to users, we still need 24 points of integration.

without-the-semantic-web.jpg

If we use semantic technologies, and introduce an ontological layer, suddenly we reduce the overall design complexity from 24 to 6.

with-the-semantic-web.jpg

For organisations in Europe, where language is the common barrier to information exchange, this approach is already reaping rewards, and is where the ISO/IEC 13250:2000 standard Topic Maps was born. The approach turns our original concept of the semantic web, a layer on top of the current web that annotates information in a way that is “understandable” by computers, into something that is actually able to be fully-realised to meet the needs of Web 2.0’s future.

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