Humans are not rational. See (Dostoevsky 1864) , the parable of the destroying free will. In this note we will describe some behavioural economics ideas that could be interesting in this side. We will see dopamine response will be very important in this context, and see how we…
Associative Conditioning # Classical Conditioning # First started with associative conditioning, which means cue -> reward signal and similars. Pavlov's experiment # Pavlov was interested in digestive systems of dogs, and discovered this by chance. Then he notices that if we…
Indipendence of Cause and Mechanism # The cause and mechanisms shall be separated. One direction is the cause, the other is the mechanism that actuates the effect of the cause. Take for example the altitude and temperature example in (Peters et al. 2017) chapter 2. The…
Matrice Jacobiana # È un modo per scrivere il gradiente di una funzione quando è in una certa forma. Data una funzione f : R n → R p ossia per esempio x = ( x 1 , ... , x n ) → ( f 1 ( x ) , ... , f p ( x )) Se le p funzioni di arrivo sono differenziabili, allora la…
The Skylake processor is a 2015 Intel processor. The Intel Processor # In 1978 Intel made the choice to have retrocompatibility for every processor. At that time they had the 8086 processor, with some number of memory bits. For backwards compatibility intructions have usually…
Object Stores # Characteristics of Cloud Systems # Object storage design principles # We don't want the hierarchy that is common in Filesystem s, so we need to simplify that and have these four principles: Black-box objects Flat and global key-value model (trivial model, easy to…
The cloud is inefficient, and it looks like we can improve a lot on this side. Computer Science with their systems have reached industrial scales and can be compared to build airports, highways and metro systems in terms of public infrastructure , yet, due to their immaterial…
The fundamental idea behind a virtual machine is to abstract the hardware of a single computer (the CPU, memory, disk drives, network interface cards, and so forth) into several different execution environments, thereby creating the illusion that each separate environment is…
How can we coordinate services to actually understand what they are doing, or what the user wants them to do? How to manage networks errors? This note will mainly focus on high level communication protocols to coordinate this kind of communication. Remote Procedure Calls #…
We want to optimize the parts of the datacenter hardware such that the cost of operating the datacenter as a whole would be lower, we need to think about it as a whole. Datacenter CPUs # Desktop CPU vs Cloud CPU # Isolation : Desktop CPUs have low isolation, they are used by a…