Category Archives: Technology
10 Mar The Context of Knowledge
What Is Knowledge? Just like the beautifully structured organization of all things in the physical universe, there is a hierarchy or taxonomy of knowledge. The levels and organization of the hierarchy, as I see them, are shown in the illustration below. Being fascinated by the concept of context, I have decided that, in this model, “context” includes […]
08 Mar In the Middle of a Big Wide World
The guy on the previous post (Your Personal Bubble) represents your typical office worker who sees himself as part of a universal hierarchy or taxonomy, though not exactly where he’d rather be in the big wide world. Each moment, we each learn from our own vantage point. While we can learn about all physical things, from […]
06 Mar Inference in the Face of Uncertainty
Do you know what I’m about to say? If your mind were not able to race ahead of the words and build a set of expectations about what comes next, you may not be able to understand me speaking or writing. But you can predict a lot more than your conscious awareness tells you. A […]
04 Mar Gnosticism, Mysticism and Hard Knowledge
Neural Network science describes oft rejected explicit knowledge in neurons as “gnostic cells” or “gramma cells” suggesting one neuron knows about gramma. Not all scientists agree with associationist theories that explain learning in the context of things that pre-exist in memory. In fact, an entire school of thought flatly rejects explicit representations that form the core […]
01 Mar Hold Onto the Memories
When you see Grandmother, is there a cell or cluster of cells in your brain that light up and say: “I recognize that face – It’s Grandmother!” The Grandmother cell theory suggests that there is such a cell or group of cells where that knowledge is explicitly stored. Earlier posts included a discussion of feature selectivity […]
28 Feb Sense-Perception and Memory
I Recall… Since we have been discussing learning in the past few posts, it seems appropriate to talk about memory here as well. Of course, we are talking about human memory, but computers can remember quite well, too. In fact memory is one of the few areas where it is universally agreed that computers are […]
26 Feb Physiology of Learning to Generalize
I began this blog heavily concentrating on the physiology of the brain, its cells and the way they interconnect. Learning and association are not dealt with much in those posts other than to describe ways in which the brain and its cells provide mechanisms for these activities. Many of the mechanisms of association are fairly clearly understood […]
24 Feb Neural Network Perception
Feedback in Image Processing While the flow of electrical impulses in the brain triggered by visual stimuli travels sequentially through layers I then II then III of the visual cortex, this directional flow does not prevent impulses from other sources, including feedback loops within the visual cortex from contributing to our ability to process images. […]
22 Feb Understanding What we See
Many Japanese kanji characters (originally imported from China) are little pictures of things in the real world. For example 木 (ki) is a tree. You can see the trunk and the branches. By adding a line at the bottom 本 (hon), you get roots or origin. Put three together 森 (mori) and you have a forest. The symbol […]