Ch.8 Nonspherical Disturbance This chapter will assume that the full ideal conditions hold except that the covari- ance matrix of the disturbance, i.e. E(EE)=02Q2, where Q is not the identity matrix. In particular, Q may be nondiagonal and / or have unequal diagonal ele- ments Two cases we shall consider in details are heteroscedasticity and auto-

Beating the Averages Paul Graham (This article is based on a talk given at the Franz Developer in Cambridge, MA, on March 25, 2001 In the summer of 1995, my friend rt morris and i started a startup called Viaweb. Our pla to write software that would let end users build online stores. What was novel about this

Quicksort Proposed by C. A.R. Hoare in 1962 Divide-and-conquer algorithm Sorts“ in place”( like insertion sort, but not like merge sort Very practical(with tuning)

luse this is the central part of the environment model, let's look in very painful detail at an example of an evaluation. In (square 4)I g particular, let's look at the evaluation of (square 4)with x;10 respect to the global environment. Here is the structure we start

Slide 17.1.1 Normal Order(Lazy) Evaluation Over the past few lectures, we have been looking at evaluation especially how to implement eval and apply in a anguage such as Scheme, in order to define a language. What we have seen is that by creating, or specifying, eval and its associated procedures, we actually define the semantics of the

I. Vocabulary(30%) Section 1 Explain the underlined word or phrase in each of the following sentences. (15%) 1. A storm moved directly over the island, demolishing buildings and flooding streets. 2. The environmental problems they found in Poland were among the worst they encountered

Evaluation and universal machines The Eval/Apply Cycle What is the role of evaluation in defining a language? Eval and Apply execute a cycle that unwinds our abstractions Reduces to simple applications of built in

I. Explain the italicized words or phrases in the following sentences. (20%) 1. All languages are dynamic rather than static, and hence a\rule\in any language can only bea statement of contemporary practice

Slide 15.6.1 The next stage in the evolution of our evaluator is to pull the 5. Environment as explicit parameter environment out as an explicit parameter. Up until now we could rely on just having a single environment in which to store (eva1'(pus*64)) bindings for variables. It made sense to have a global

Abstract Fermentation is the processes in which microbial population functions. Those processes are supported and maintained by the three kinds of flow: 1. the electron flow which operates along with energy-form transformation, 2. the metabolite fluxes which operate along with dissimilation and assimilation, 3. the information flow which operates along with the metabolic regulations in different levels. On the basis of the analysis of the operation rules of above three kinds of flow, the three basic viewpoints of industrial fermentation are put