'Join tree' presentation slideshows

DHT* Applications

DHT* Applications. Jeffrey Pang CMU NetTalk, Dec. 5, 2003. * and DOLR. Brief Review of DHTs. Many DHTs: PRR Trees, Pastry, Tapestry Chord, Symphony CAN SkipNet, Kademlia, Koorde, Viceroy, etc., etc. Good Properties: Distributed construction/maintenance

656 views • 50 slides

Tree Decomposition methods Chapter 9

Tree Decomposition methods Chapter 9. ICS-275 Spring 2009. Graph concepts reviews: Hyper graphs and dual graphs. A hypergraph is H = (V,S) , V= {v_1,..,v_n} and a set of subsets Hyperegdes : S={S_1, ..., S_l }.

514 views • 41 slides

428 views • 28 slides

Cost-Based Transformations

366 views • 23 slides

Cost-Based Transformations

235 views • 23 slides

Ordered Valuation Algebras a Generic Framework for Approximating Inference

Ordered Valuation Algebras a Generic Framework for Approximating Inference. Rolf Haenni UCLA Computer Science Department. Contents :. 1. Introduction 2. Valuation Algebras 3. Join Tree Propagation 4. Ordered Valuation Algebras 5. Resource-Bounded Approximation 6. Conclusion & Outlook.

302 views • 21 slides

Cost based transformations

Two candidates for the best logical query plan. Initial logical query plan. Cost based transformations. Cost based transformations. The (estimated) size of ? a =10 ( R ) is 5000/50 = 100 The (estimated) size of ?(? a =10 ( R )) is min{1*100, 100/2} = 50

279 views • 16 slides

Cost based transformations

Two candidates for the best logical query plan. Initial logical query plan. Cost based transformations. Cost based transformations. The (estimated) size of ? a =10 ( R ) is 5000/50 = 100 The (estimated) size of ?(? a =10 ( R )) is min{1*100, 100/2} = 50

163 views • 16 slides

Join Algorithms

7. Join Algorithms. Join Algorithms - 1. There are 6 join Algorithms These are the 6 ways that the optimiser can choose to use to solve a join They all have differing advantages Some may be better for larger or smaller tables Some may work better for complex (more than 2 table) joins.

300 views • 15 slides