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9 of 9 people found the following review helpful:
4.0 out of 5 stars
Outside the box, November 18, 2007
This review is from: Confabulation Theory: The Mechanism of Thought (Hardcover)
I heard about confabulation theory from an AGI video and looked forward to this book. The author presents a unique and relatively simple theory about the basic algorithm of the brain. Although the theory is incomplete, the big benefit of the book is presenting a thought provoking new view - and one based (I am not in a position to assess how accurately) on a substantial body of neuroscience. There is substantial redundancy resulting from use of text from the author's scientific papers - I kept asking myself, "didn't I already read this"? And although I'm in the KISS camp I am doubtful that the core algorithm can be quite as simple as confabulation theory supposes. Yet at the core are some fascinating ideas that present fuel for a much needed new direction in thinking about how to approach AGI, and sufficient concreteness from which to develop code experiments for AGI implementations.
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6 of 6 people found the following review helpful:
3.0 out of 5 stars
Well-written, but repetitive and overstated, April 26, 2008
This review is from: Confabulation Theory: The Mechanism of Thought (Hardcover)
"Confabulation Theory" is not a textbook but a collection of papers by the author plus two talks on DVDs. The writing is very clear and the talks are excellent, taking you through the theory one step at a time. Hecht-Nielsen is a great teacher. But the papers are repetitive, covering the same basics over and over again, while skimming over the key topics of self-organization within modules and implementation of the winner-take-all networks. The book spends too much time on sentence confabulation experiments (which appear to be similar in approach to statistical language translation) and not enough on the applications sketched out in the last two chapters (vision and continuous speech segmentation).
Hecht-Nielsen has an unfortunate habit of overstatement which weakens his presentation. In the text and the videos he repeatedly points out how "starkly alien" confabulation theory is, and how it might revolutionize "psychology, education, philosophy, psychiatry, medicine (both human and veterinary), law, and theology." Really? If you're unfamiliar with neuroscience, the massive parallelism and nonlinear dynamics might seem alien, but this is old hat in the field. His "Fundamental Theorem of Cognition" goes over the edge, though, seemingly suggesting that he has "solved" the problem of cognition once and for all; the "fundamental theorem of confabulation" would have been a more appropriate and less annoying name.
There are a lot of interesting ideas here, and I finished the book wanting to know more. I hope that someday Hecht-Nielsen writes a book with greater depth in implementation issues and more breadth on applications. The papers making up the core of the theory are available on the Web, so the book is worth buying only for the convenience of having everything bound together.
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3.0 out of 5 stars
Fundamental Theorem of Cognition?, September 27, 2010
This review is from: Confabulation Theory: The Mechanism of Thought (Hardcover)
I will admit to being new to reading books in the field of neuroscience and this book attracted me with its title, DVDs (definitely a good means for presenting a new idea) and mathematical content. So I note the points of all the other reviewers who are probably more familiar with the area. I am one of those for whom the claim that this cognition method is "alien" to standard approaches is intriguing.
It seems to me indeed that this book is presenting an important idea with its "central theorem of cognition/confabulation". However I could comment on some aspects of the mathematics. Firstly the Fundamental Theorem itself is presented in a mathematically specific way with four assumed facts and one conclusion. This theorem could be generalised to N assumed facts. In fact understanding the Bayes mathematics is possibly easier with N=2 assumed facts. Also many of the examples involve four assumed letters or words. I can understand why many appropriate test examples might use N=4, but is there some reason why N=4 is presented as the Fundamental theorem?
The "duck example" associated with explaining the Fundamental theorem is very good and sets the scene well. It is certainly plausible that empirical mammalian (quasi-) reasoning and also learning is based around this kind of approach. One remaining question, perhaps, is whether all human analytical reasoning can be said to work this way as well?
The discussion around page 200 suggests that earlier work in Vector Quantization and Self Organizing maps has helped to motivate this research. I presume that some of the "alien-ness" of this approach derives from the fact that the brain uses analogue components rather than (just) the discrete digital structures used in modern computation theory. I suspect that there is room for more to be said on this aspect.
I will definitely have to re-read parts of this book to get the most from it, but it does seem to be an important set of ideas!
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