R语言经常用于统计, 金融, 经济, 机器学习等课程的Lab, assignment和project.
PROJECT 1: LOAN PREDICTION DSCI 451 Fall 2023 Financial institutions want to loan money to people who are likely to pay it back. They often use a variety of information about an individual to predict whether or not that individual is likely to pay back a loan. People who were approved for a loan are …
Assignment 5: Concurrency 15-312: Principles of Programming Languages (Spring 2023) This assignment studies concurrency through the lens of a concurrent programming language known as Concurrent Algol (CA). Effectful computations (involving side-effects) distinguish themselves from “pure” computation by involving some sort of interaction. Think IO effects (user interaction) or reference cells (state/mem- ory interaction). We seek …
Assignment Task For this assignment you are expected to produce a report, giving details of a security audit of a web application. The audit will be a crystal box test, and you will be supplied with the source code, and the means to run the site. The application will have several vulnerabilities, from the topics …
Assignment Task The CW2 component consists of practical work on the development of a secure IT system. In this coursework you are required produce a report on the design and development a secure web application. Details of the design criteria can be found in the attached specification document. The report should provide details of the …
Assignment 4: Effects: Control and Storage 15-312: Principles of Programming Languages (Fall 2023) This assignment will familiarize you with effects that are widely present in programming language. Effects, or side effects are umbrella terms used to describe any computational phenomenon that is not fully captured in the return value of an expression. Common examples of …
University of Toronto, Department of Computer Science CSC 485H/2501H: Computational linguistics, Fall 2023 Assignment 3 Due date: 23:59 on Thursday, December 7, 2023. Late assignments will not be accepted without a valid medical certificate or other documentation of an emergency. For CSC485 students, this assignment is worth 33% of your final grade. For CSC2501 students, …
Homework 7: Parsing In this homework, you’ll implement a top-down predictive parser for an alternative syntax for our language. This syntax is called ML (Berkeley), because it bears a vague resemblance to ML-family languages like OCaml. We’ll usually refer to it as MLB. Here’s an example of an MLB program: 1 2 3 4 5 …
COMPSCI 3MI3 – Principles of Programming Languages J. Carette McMaster University Adapted from “Types and Programming Languages” by Benjamin C. Pierce and Nick Moore’s material. J. Carette (McMaster University) Towards the Lambda Calculus Fall 2023 1 / 36 Towards the Lambda Calculus Language Safety “Informally […], safe languages can be defined as ones that make …
For most languages, types are not needed at run-time. Consider this type erasure function. erase(x) erase(λx : T1.t2) erase(t1 t2) = λx.erase(t2) = erase(t1) erase(t2) By careful design, we have: t → t′ =⇒ erase(t) → erase(t′). Proved by induction on evaluation derivations. erase(t)→m′ =⇒ ∃t′ |t →t′ ∧erase(t′)=m′ J. Carette (McMaster University) Types Fall …
Question 1: Agner: A concurrency tracer Concurrency bugs, including especially deadlocks and race conditions, are notoriously difficult to replicate and diagnose, even in otherwise well-behaved, message-oriented languages such as Erlang. The problem is that, when multiple concurrent threads are executing, the relative order of critical events may depend unpredictably on factors such as the compiler …