PPT-Maps and Hashing Eric Roberts

CS 106B February 15 2013 Simplifying the Map Abstraction Although templates offer considerable flexibility when you are designing a collection class they also complicate both the interface and the implementation making them harder to follow. nowakinrialpesfr Fr ed eric Jurie LEAR Group CNRS INRIA 655 enue de lEurope 38334 Saint Ismier Cede France fr edericjurieinrialpesfr Abstract In this paper we pr opose and valuate an algorithm that learns similarity measur for comparing ne ver seen o The analysis uses only very basic and intuitively understandable concepts of probability theory and is meant to be accessible even for undergraduates taking their 64257rst algorithms course 1 Introduction dictionary is a data structure for storing a Yunchao. Gong. UNC Chapel Hill. yunchao@cs.unc.edu. The problem. Large scale image search:. We have a candidate image. Want to search a . large database . to find similar images. Search the . internet. Approximate Near Neighbors. Ilya Razenshteyn (CSAIL MIT). Alexandr. . Andoni. (Simons Institute). Approximate Near Neighbors (ANN). Dataset:. . n. points in . d. dimensions. Query:. a point within . Plan. I spent the last decade advising on numerous cases where hash tables/functions were used. A few observations on . What data structures I’ve seen implemented and where. What do developers think, were they need help. Stief. . CIS 1055 sec. 009. September 29, 2008. Disney’s History. Started out in 1923 as a animation studio in California. Mickey Mouse debuts on Steamboat Willie cartoon in 1929. Disneyland theme park opens in Anaheim, CA in 1955. Consider a set of data with N data items stored in some data structure. We must be able to insert, delete & search for items. What are possible ways to do this? What is the complexity of each structure & method ?. What is a hashing function?. Fingerprint for a given piece of data. Typically generated by a mathematical algorithm. Produces a fixed length string as its . output. Hashes are sometimes . called a . checksum or message digests. . Presenter: Alicia McGee. Email: . amcgee@mobilemcps.org. Make a copy of this to take notes!. Maps and Geography . We want students to become global students….. So….. Students should be able to:. . Presenter: Alicia McGee. Email: . amcgee@mobilemcps.org. Make a copy of this to take notes!. Maps and Geography . We want students to become global students….. So….. Students should be able to:. Visualizing 3D Surfaces. Carol J. Ormand. , . SERC, Carleton College. Eric Riggs, Texas A&M University. Overview. What do we mean when we talk about “reading” contour maps?. Example: the Topographic Map Assessment. How to read a map. Maps . are pictures of the Earth's . surface. Reference maps . just . show natural features like rivers, cities, political subdivisions and highways. .. Thematic maps . use these items only . The oldest map?. Konya . town map, Turkey, c. 6200 BC. Milestones Project. http://www.math.yorku.ca/SCS/Gallery/milestone/. The First World Map. Anaximander of Miletus, Turkey, c. 550 BC. Milestones Project. Amjad. . Daoud. , Ph.D.. http://iswsa.acm.org/mphf. Practical Perfect Hashing for very large Key-Value Databases . Abstract. This presentation describes a practical algorithm for perfect hashing that is suitable for very large KV (key, value)...