PPT-Complexity and Classes CSCI 162

Introduction to Programming II William Killian Complexity Two types Speed Relate operations to input size Space Relate bytes to input size BigO notation Machineindependent means for specifying efficiency complexity. Class 22: . Introducing Complexity. Spring 2010. University of Virginia. David Evans. Exam 2: due now. Read Chapter 7. (we skip Ch 6). Classes 1-13. s. All Languages. Regular Languages. a. Finite Languages. Project and Process Metrics. Why do we measure?. Assessing project status. Allows us to track risks. Before they go critical. Adjust workflow. See if the team can control the quality of artifacts. Example metric. Why don’t languages evolve toward efficiency?. “As they evolve, things become more efficient.”. Efficient operations, tools, methods, etc. should drive out those that are difficult and costly.. . 20. Hashing / Hash tables. 1. CSCI 3333 Data Structures. Outline. Basic definitions. Different hashing techniques. Linear probing. Quadratic probing. Separate chaining hashing. Comparing hashing with binary search trees. CSCI 201L. Jeffrey Miller, Ph.D.. http://www-scf.usc.edu/~csci201. USC CSCI 201L. Outline. USC CSCI 201L. 2. /24. Distributed Programming. RMI. CORBA. Web Services. Test Yourself. Remote Procedure Calls. Shaoyuan . Chen. Jim Fawcett. Intent. Provide a unified interface to a set of interfaces in a subsystem. Facade . defines a . higher-level interface that makes the subsystem easier to use. .. Wrap a complicated subsystem with a simpler interface.. The UNIX System. Unit V. Permissions. Permissions. all access to directories and files is controlled. UNIX uses discretionary access control (DAC) model . each directory/file has owner. owner has discretion over access control details. Jeffrey Miller, Ph.D.. http://www-scf.usc.edu/~csci201. USC CSCI 201L. Outline. USC CSCI 201L. 2. /25. CORBA. Program. CORBA Overview. The Common Object Request Broker Architecture (CORBA) is the Object Management Group’s (OMG) open, vendor-independent architecture and infrastructure that computer applications use to work together over networks. Jeffrey Miller, Ph.D.. jeffrey.miller@usc.edu. Outline. Conditions. Program. USC CSCI 201L. Conditional Statements. Java has three conditional statements, similar to C . if-else. switch-case. Conditional ternary operator . Rodrigo . Fonseca. With content from Scott . Shenker. , Nick . McKeown. SDN. For now: a new paradigm for network management. SDN widely . accepted as “. future of networking. ”. ~1000 engineers at latest Open Networking Summit. S201David GoldschmidtEmail goldschmidtgmailcomOffice Amos Eaton 115Office hours Mon 930-1100AMTue 1100AM-1230PMThu 200-300PMKonstantin KuzminEmail kuzmik2rpieduOffice Amos Eaton 112Office hours TBDGra Exam 2 in one week. Practice tests on . Submitty. Review and practice on Friday. Programming Languages CSCI 4430, A. Milanova. 1. Lambda Calculus. Lecture Outline. Quiz 6. Lambda calculus. Reduction strategies (catch-up). SPACE COMPLEXITY. SHESHAN SRIVATHSA. INTRODUCTION. Definition:. Let M be a deterministic Turing Machine that halts on all inputs.. Space Complexity of M. is the function f:N. N, where f(n) is the maximum number of tape cells that M scans on any input of length n.. Lijie. Chen. MIT. Today’s Topic. Background. . What is Fine-Grained Complexity?. The Methodology of Fine-Grained Complexity. Frontier: Fine-Grained Hardness for Approximation Problems. The Connection.