NetworkingMind

The Performance Golden Rule , as explained in Chapter A, reveals that only 10–20% of the end user response time involves retrieving the requested HTML document. The remaining 80–90% of the time is spent making HTTP requests for all the com-ponents (images, scripts, stylesheets, Flash, etc.) referenced in the HTML document. Thus, a simple way to improve response time is to reduce the number of compo-nents, and, in turn, reduce the number of HTTP requests.

What is Artificial Intelligence (AI) ?

In general and short, it's a combination of following four statements :

1. Systems that think like humans
2. Systems that act like humans
3. Systems that think rationally
4. Systems that act rationally

Let's start by introducing some questions on first two characteristics "Systems that think like humans" and "Systems that act like humans".

An Object-Oriented Language Interpreter

In object-oriented languages, all values are objects. An object is a tuple (like a C struct, a Scheme list, a Pascal record, or an O'Caml tuple) that can include code as well as data. Objects only interact by sending messages between one another. Every object is an instance of some class, which defines what messages the object will accept and act upon. The object being sent the message is called the receiver.

In order to talk about garbage collection, we first need a memory model. We define the heap as a tuple containing the list of values in the heap and related information (we'll get to that later). We pass the heap as a parameter into the interpreter. The interpreter now returns a memory location along with the new state of the heap. This avoids complicating our interpreter with destructive operations to maintain the heap. We use big-step environment semantics.