Showing posts with label information retrieval. Show all posts
Showing posts with label information retrieval. Show all posts

MapReduce: High-impact Strategies - What You Need to Know: Definitions, Adoptions, Impact, Benefits, Maturity, Vendors Review

MapReduce: High-impact Strategies - What You Need to Know: Definitions, Adoptions, Impact, Benefits, Maturity, Vendors
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MapReduce: High-impact Strategies - What You Need to Know: Definitions, Adoptions, Impact, Benefits, Maturity, Vendors ReviewWhat is this book? There is nothing useful in here. It is like a couple of random pages from wikipedia bound together.MapReduce: High-impact Strategies - What You Need to Know: Definitions, Adoptions, Impact, Benefits, Maturity, Vendors Overview

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Building Search Applications: Lucene, LingPipe, and Gate Review

Building Search Applications: Lucene, LingPipe, and Gate
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Building Search Applications: Lucene, LingPipe, and Gate ReviewUnfortunately, there are not too many books written on the subject of Information Retrieval as it relates to Java programming, and thankfully, Mr.Konchady's contribution is an excellent resource. It provides a nice balance between the discussion of the theory of Information Retrieval, and providing concrete examples in Java, using Lucene, LingPipe, and Gate (API's for Information Retrieval used in Java). I personally had only heard of Lucene before coming across this book, and was very thankful to learn of the other two (LingPipe, and Gate) afterwards. The book shows the user how to use the above API's together when building an application, which is a great learning opportunity for the reader, because most tutorials available for Lucene, LingPipe, or Gate that you'll find online show you how to use that particular API only, instead of showing you how to use it in conjunction with others to truly harness the power of Information Retrieval with Natural Language Processing, together. The other very nice thing about this book is that the author also introduces the reader to other tools (such as Nutch, WordNet, etc.) that allows the user to provide advanced functionality, without "re-inventing the wheel". This book is a must read for anyone who is serious about learning to develop applications involving Information Retrieval.Building Search Applications: Lucene, LingPipe, and Gate Overview

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Hibernate Search in Action Review

Hibernate Search in Action
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Hibernate Search in Action ReviewI just finished reading Hibernate Search in Action, and I loved it. I should point out that I was the porter of Hibernate Search to NHibernate Search, so I had some previous expertise in the topic. In addition to that, I approached this book at an angle completely orthogonal to the expected audience. Unlike most "in Action" books, I did not intend to make immediate use of the code and approaches suggested in the book. Instead, I looked to the book as a way to deepen my understanding of the tool and how it works.
I am impressed, massively so, that it did so well in this regard for someone who has gone through the entire source code of the project several times.
I'll not bore you with the actual details, you can get the actual content summary of off the site. From my perspective, after reading this book I know that I am going to take a completely different approach for most complex search scenarios, and I think that I have the practical theoretical knowledge to deal with it.
I highly recommend the book if you actually need to deal with Hibernate Search, but I would recommend it to people who are not using it, because it contains some important eye opening concepts if you are not used to full text search tools capabilities. As a nice bonus, I was able to take the information in the book and use it to discuss a problem the customer was having, ending up with something that I consider far superior of the solution that they currently employ.Hibernate Search in Action Overview

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Google Hacks: Tips & Tools for Finding and Using the World's Information Review

Google Hacks: Tips and Tools for Finding and Using the World's Information
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Google Hacks: Tips & Tools for Finding and Using the World's Information ReviewFew of today's web-savvy would contest Google's superiority among search engines. Behind the austere and simple interface lies a wealth of information just waiting to be tapped. Until now however, tapping all that information and power would likely require scanning dozens of websites hunting down tips for making the most out of Google. Fortunately, Tara Calishain, Rael Dornfest and their colleagues have done most of the legwork for us in O'Reilly's Google Hacks.
Google Hacks is another in O'Reilly's Hacks series, "Industrial Strength Tips and Tools". In this case, 100 recipes for just about every imaginable use for Google. O'Reilly uses the term 'hack' in a positive way, meaning a clever technical feat or trick, as opposed to the negative connotation associated with those blackhats who break into computer systems for fun and for profit. Each "hack" is a stand-alone recipe demonstrating some aspect of using Google to find just what you're looking for. Most hacks also contain cross-references to other relevant hacks in the book, so you really don't have to read it from cover to cover. You could start with whatever interests you, and go from there.
The book is divided into several chapters, each of which contains several hacks. The first few chapters are targeted at the general end-user, describing in detail all of the various syntaxes you can use when searching with Google, as well as introducing the various topical collections (U.S. government, Linux, Mac, etc.), and other tools (Google Groups, Google News, etc.,) available. The authors are careful to point out where the various syntax pieces are incompatible, and which syntax features are available with which services. Also covered are various tools you can use to (legally) 'scrape' Google search results for further analysis. These chapters will be useful for just about anyone who uses Google. Some of the material (such as directly manipulating URLS to tweak search results and custom HTML forms) may be beyond the reach of some newbies. A general understanding of URLs, HTML and CGI scripting will be helpful in making use of most of the book.
The next few chapters are targeted more to developers and propeller-heads, describing the Google Web Service API, as well as providing dozens of scripts (mostly in Perl) for manipulating Google's index via its XML interface. Newbies and the casual user might find all this a bit overwhelming, but anyone with a Perl interpreter could potentially use these scripts to their advantage. One chapter also provides examples of using the API in various other languages including PHP, Java, Python, C#/.NET, and VB.NET. There are enough examples here of using the API in various fashions to get anyone with a sense of programming plenty of starting off points for whatever project they may imagine with Google's wealth of information.
The next to last chapter involves a handful of pranks, games, other oddities you can do with Google. Fool your friends with 0-result searches, let Google write poetry or a recipe for you. Draw pictures with Google Groups, or see just how good you are at Google-Whacking. This is the chapter for all of you who have way too much time on your hands ;-).
The last chapter in the book is targeted towards webmasters and offers several tips not only on getting your website well-placed in Google's search rankings, but also general help on getting traffic to your site in the first place. The authors also discuss strategies for using Google's AdWords system to the advantage of your business.
Overall, the book is very readable, and easy to move through (well, for a geek anyways). Each hack is self-contained, and can be read in a few minutes. Read it near your computer, as you'll likely be wanting to try some of these hacks out as you read them. As for its usefulness, I'm already using things I learned in the book on a regular basis to my daily advantage. However, if you're not more than a casual user of Google, all the scripts and API-speak might be overkill for your needs. The first few and last chapters probably justify the Amazon price for most users, however.
The book isn't perfect, though. I did find a few typographical errors scattered through the text, but they weren't prevalent enough to be too distracting. Also, with coverage of such a moving target as a major Internet property like Google, there will likely be links and even certain hacks that may not work, and features that change with time. Finally, the idea of narrowing down your search results to a manageable number surfaces often. In my opinion, what's important is not so much how many search results are found, but rather, whether or not Google can get me what I'm looking for within the first page or two of results, which it usually does, and which is why I use Google in the first place. The real value of the book shows itself on those occasions where Google doesn't necessarily get you where you want to be on the first shot.
In summary, true to its cover graphic, Google Hacks will provide you with a large number of tools to get the most out of Google, whether for serious research, casual browsing, procrastination activities, or just plain old fun.Google Hacks: Tips & Tools for Finding and Using the World's Information Overview

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Privacy and Big Data Review

Privacy and Big Data
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Privacy and Big Data ReviewA book that is slight in pages but strong on content.
Terence Craig and Mary Ludloff take the reader on a swift but informed journey across the landscape of modern privacy issues arising from our online life. Predictably the book is full of caution and warning - it is no surprise that our private information is doing the rounds in places that we don't know, and governments are encroaching our privacy under the banner of national security. Orwell's Big Brother isn't alive and well - he has been replaced by an even more worrisome industry of data aggregators who make their living by combining our on-line information from multiple sources.
The strong points of the book are many. A cogent discussion of the issues, a review of the various approaches to legislation in the US, Europe, China and even my home nation, Australia. And what I liked most - a balanced assessment of the risks and a nod towards the upside - all that 'free' stuff we get on the web courtesy of surrendering our personal information.
The downsides of the book? Not many, although I would have liked the authors to have shared some more of their insights into what the world might look like in ten years hence. Not crystal ball gazing, just what some of the implications might be depending on how current developments play out.
If you have a couple of hours to spare (the book is under 100 pages) and you want to get your head around the hard facts of the current privacy dilemmas arising from your online life, then you could do a lot worse than cast an eye over this publication. If you want something philosophical with big picture stuff and something to send shudders up your spine, then this is probably not what you are after.Privacy and Big Data Overview

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Tika in Action Review

Tika in Action
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Tika in Action ReviewFor people working with content, a common problem is "what kind of thing is this binary file, and what does it contain?". Apache Tika provides a solution for these issues, and Tika In Action tells you how to make use of it! The book starts with a great introduction to content, content types and metadata, then quickly gets you started on using Tika. Next we're guided through how to identify the type of content and files, then how to get out the textual contents, formatting and metadata. Finally we're given guides on extending Tika, and integrating it into Search Systems, Content Management Systems and Scientific Processing. The book is well written, full of great examples, and is a brilliant way to get started (and work your way to expert!) on this common problem area, identifying and extracting information from content.Tika in Action Overview

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