Showing posts with label collective intelligence. Show all posts
Showing posts with label collective intelligence. Show all posts

Communication Power Review

Communication Power
Average Reviews:

(More customer reviews)
Are you looking to buy Communication Power? Here is the right place to find the great deals. we can offer discounts of up to 90% on Communication Power. Check out the link below:

>> Click Here to See Compare Prices and Get the Best Offers

Communication Power ReviewThis book makes the same arguments as the 12 year older book The Power of Identity. In two respects Castells has made considerable progress. The former book was talking about human selves and identities. Now the author has really discovered psychology. Meaning has become a core concept in the analysis of this structural thinker. He borrows from the currently popular work of neuropsychologists such as Antonio Damasio that have made the turn from cognition and reasoned action to biology and emotions. This enables him to make splendid analyses of media politics and political campaigns, mainly in the United States as a combination of rationality and emotions. For example, he describes the systematic campaign of misinformation in the mass media of the Bush administration dragging the American population into the Iraq war and tries to explain why this was successful.
The second advance is more attention to the struggle over networks: they are programmed and reprogrammed. In a 1999 review of the trilogy The Information Age I accused Castells of completely neglecting the design dimension and the social struggle over networks . At that time, his view was that with networks we have created a machine that is dynamic, full of opportunities but controlled be no one. Now he clearly argues that the `logic' of networks could be transformed (p. 36). He tries to show this in a number of case studies in which communication networks are reprogrammed.
The first study is about the environmental movement and the `new culture of nature' (environmental consciousness). `It was the networking between the scientific community, environmental activists and celebrities that brought the issue to the media, and communicated it to the public at large via multimedia networks' (p. 321). The second study describes the global movement against corporate globalization that is predominantly organized via the Internet (e.g. Indymedia) and mobile telephony. The third study reports the use of mobile telephony (SMS) to launch a public outcry against the deliberate manipulation of the Aznar government after the 2004 terrorist attack in Madrid that accused the ETA in stead of Al Qaeda. The final study analyses the Obama presidential primary campaign amply using the Internet. All these cases are used to demonstrate the potential of the media of mass self communication and the Internet generally to organize counter power or change power relationships.
In my view these studies do not convincingly prove Castells' point despite all descriptive evidence supplied. He gives no detailed information about the networks of scientists, activists and celebrities that are supposed to have brought the issue to the media. Public pressure and the own initiative of the traditional mass media played a role at least as important, and the Internet's role was not more relevant than that of the mass media. The organization of the anti- or other globalization movement certainly depends on counter-networking via the new media. However it has proved to be relatively powerless as is testified by the fact that when its `finest' hour came with the bankruptcy of neo-liberalism and the discredit of global capitalism in the credit crisis, it was virtually absent in public opinion and on the streets. A particular SMS call for a demonstration against the Spanish government's misinformation certainly contributed to the mobilization that stirred a part of the electorate to vote against Aznar. However, a number of old media (newspapers and radio-stations) also played an important role in the public outcry, and they had a larger audience. The role of the Internet in the Obama campaign also is exaggerated . Reading about the superiority of the use of the Internet in this campaign on Castells' account one wonders why Obama did not win with a landslide of 10 to 15 percent. In fact Obama did not win the presidency by means of the Internet but by his personal quality as a candidate attracting many new voters. He was saved by his reaction to the credit crisis at the start of September 2008, just two months before the election when he was at the losing end according to the polls. Despite all Internet use.
Clearly, the Internet and other digital media are getting more important in these, and many other cases. Certainly, they have a liberating potential as was recently demonstrated by the oppositional movement in Iran. However, this case also proves the opposite: the remaining control of the far more important mass media by the regime and the attempts to censor the new media. So, my biggest problem with Castells' analysis is that he is very one-sided in highlighting the liberating potential instead of opposite tendencies. For me it is unacceptable to talk about communication power in networks without any treatment of privacy, security and surveillance issues (with the partial exception of Internet censorship in China). Unfortunately, central registration and control also are important potentials of power in networks. Further, Castells completely ignores the problems of the digital divide and the lack of digital skills among at least half of Internet users, even in high-access countries. The liberating potential of mass self-communication will be seen in another light when Internet use in practice would lead to a reinforcement of the `information elite' and big problems to catch up for large parts of the population.
The theoretical parts of this book are very tough reading for non-academic readers of this book, as the author tries to summarize his former work of the Information Age in a very condensed way. Opposed to that, the descriptive parts are relatively easy to read and well written.
In his conclusions Castells claims to present the beginnings of a general communication theory of power. However, it is utterly disappointing that he does so by only presenting a `methodological approach' and a number of very general hypotheses for others to investigate (p. 430). One wonders why he did not do this himself in the 500 plus pages at his disposal. His hypotheses lack sufficient specification for empirical test as he admits himself: `I am not identifying the concrete social actors who are power-holders' (p. 430). This book contains many well-documented and sharply analysed case studies as we are used to read in Castells' work marked by a very high level of expertise. However, the gap between these cases and a real theory of communication power remains large.
Jan A.G.M. van Dijk
Professor of Communication Science and the Sociology of the Information Society University of Twente, The Netherlands
A longer and more academic version of this review will appear in Communications, The European Journal of Communication
Communication Power OverviewHailed by The Financial Times as "the most prominent and influential theorist and analyst of the modern communications and network age," Manuel Castells here offers a ground-breaking account of the modern communication revolution, a dramatic transformation of technology--and of the signals we receive--that is changing the way we feel, think, and behave. And that, writes Castells, is creating a revolution in power. With his landmark trilogy, The Information Age, Castells offered one of the first comprehensive analyses of how the Internet was creating a networked society. Now he draws on neuroscience, cognitive psychology, and case histories from around the world to explore the psychology of decision making in the new communications environment, highlighting the rise of communication power. He ranges widely, exploring global media deregulation, the misinformation that surrounded the invasion of Iraq, environmental movements, the role of the Internet in the Obama presidential campaign, and media control in Russia and China. In a network society, he writes, politics is fundamentally media politics--and the politics of scandal is its epitome. That fact is behind a worldwide crisis of political legitimacy that challenges the meaning of democracy in much of the world. More fundamentally, Castells argues, the Internet's instant messaging, social networking, and blogging have given rise a new communication system, mass self-communication, that is profoundly altering power relationships. Deeply researched, far-reaching in scope, and incisively argued, Communication Power offers a profound new understanding of implications of the information revolution. "Castells has done it again, a masterpiece of global perspective and enviable erudition." --W. Russell Neuman, Evans Professor of Media Technology, University of Michigan "A powerful and much needed book for a world in crisis." --Antonio Damasio, Director, Brain and Creativity Institute, University of Southern California

Want to learn more information about Communication Power?

>> Click Here to See All Customer Reviews & Ratings Now
Read More...

Programming Collective Intelligence: Building Smart Web 2.0 Applications Review

Programming Collective Intelligence: Building Smart Web 2.0 Applications
Average Reviews:

(More customer reviews)
Are you looking to buy Programming Collective Intelligence: Building Smart Web 2.0 Applications? Here is the right place to find the great deals. we can offer discounts of up to 90% on Programming Collective Intelligence: Building Smart Web 2.0 Applications. Check out the link below:

>> Click Here to See Compare Prices and Get the Best Offers

Programming Collective Intelligence: Building Smart Web 2.0 Applications ReviewThis book is probably best for those of you who have read the theory, but are not quite sure how to turn that theory into something useful. Or for those who simply hunger for a survey of how machine learning can be applied to the web, and need a non-mathematical introduction.
My area of strength happens to be neural networks (my MS thesis topic was in the subject), so I will focus on that. In a few pages of the book, the author describes how the most popular of all neural networks, backpropagation, can be used to map a set of search terms to a URL. One might do this, for example, to try and find the page best matching the search terms. Instead of doing what nearly all other authors will do, prove the math behind the backprop training algorithm, he instead mentions what it does, and goes on to present python code that implements the stated goal.
The upside of the approach is clear -- if you know the theory of neural networks, and are not sure how to apply it (or want to see an example of how it can be applied), then this book is great for that. His example of adaptively training a backprop net using only a subset of the nodes in the network was interesting, and I learned from it. Given all the reading I have done over the years on the subject, that was a bit of a surprise for me.
However, don't take this book as being the "end all, be all" for understanding neural networks and their applications. If you need that, you will want to augment this book with writings that cover some of the other network architectures (SOM, hopfield, etc) that are out there. The same goes for the other topics that it covers.
In the end, this book is a great introduction to what is available for those new to machine learning, and shows better than any other book how it applies to Web 2.0. Major strengths of this book are its broad coverage, and the practicality of its contents. It is a great book for those who are struggling with the theory, and/or those who need to see an example of how the theory can be applied in a concise, practical way.
To the author: I expect this book will get a second edition, as the premise behind the book is such a good one. If that happens, perhaps beef up the equations a bit in the appendix, and cite some references or a bibliography for those readers interested in some more in depth reading about the theory behind all these wonderful techniques. (The lack of a bibliography is why I gave it 4 stars out of 5, I really think that those who are new to the subject would benefit greatly from knowing what sits on your bookshelf.)Programming Collective Intelligence: Building Smart Web 2.0 Applications OverviewWant to tap the power behind search rankings, product recommendations, social bookmarking, and online matchmaking? This fascinating book demonstrates how you can build Web 2.0 applications to mine the enormous amount of data created by people on the Internet. With the sophisticated algorithms in this book, you can write smart programs to access interesting datasets from other web sites, collect data from users of your own applications, and analyze and understand the data once you've found it. Programming Collective Intelligence takes you into the world of machine learning and statistics, and explains how to draw conclusions about user experience, marketing, personal tastes, and human behavior in general--all from information that you and others collect every day. Each algorithm is described clearly and concisely with code that can immediately be used on your web site, blog, Wiki, or specialized application. This book explains:
Collaborative filtering techniques that enable online retailers to recommend products or media
Methods of clustering to detect groups of similar items in a large dataset
Search engine features--crawlers, indexers, query engines, and the PageRank algorithm
Optimization algorithms that search millions of possible solutions to a problem and choose the best one
Bayesian filtering, used in spam filters for classifying documents based on word types and other features
Using decision trees not only to make predictions, but to model the way decisions are made
Predicting numerical values rather than classifications to build price models
Support vector machines to match people in online dating sites
Non-negative matrix factorization to find the independent features in adataset
Evolving intelligence for problem solving--how a computer develops its skill by improving its own code the more it plays a game
Each chapter includes exercises for extending the algorithms to make them more powerful. Go beyond simple database-backed applications and put the wealth of Internet data to work for you. "Bravo! I cannot think of a better way for a developer to first learn these algorithms and methods, nor can I think of a better way for me (an old AI dog) to reinvigorate my knowledge of the details." -- Dan Russell, Google "Toby's book does a great job of breaking down the complex subject matter of machine-learning algorithms into practical, easy-to-understand examples that can be directly applied to analysis of social interaction across the Web today. If I had this book two years ago, it would have saved precious time going down some fruitless paths." -- Tim Wolters, CTO, Collective Intellect

Want to learn more information about Programming Collective Intelligence: Building Smart Web 2.0 Applications?

>> Click Here to See All Customer Reviews & Ratings Now
Read More...