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Data Structures Bloom Filters Design and Analysis of Algorithms I

Bloom Filters

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Data Structures. Bloom Filters. Design and Analysis of Algorithms I. Bloom Filters: Supported Operations. Bloom Filters: Applications. Bloom Filter: Under the Hood. Heuristic Analysis. - PowerPoint PPT Presentation

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Page 1: Bloom Filters

Data Structures

Bloom FiltersDesign and Analysis

of Algorithms I

Page 2: Bloom Filters

Tim Roughgarden

Bloom Filters: Supported Operations

Page 3: Bloom Filters

Tim Roughgarden

Bloom Filters: Applications

Page 4: Bloom Filters

Tim Roughgarden

Bloom Filter: Under the Hood

Page 5: Bloom Filters

Tim Roughgarden

Heuristic Analysis

Page 6: Bloom Filters

(1− 1𝑛 )𝑘∨𝑆∨¿¿

1−(1− 1𝑛 )𝑘∨𝑆∨¿ ¿

(1𝑛 )

¿𝑆∨¿ ¿

(1− 1𝑛 )¿𝑆∨¿ ¿

Under the heuristic assumption, what is the probability that a given bit of the bloom filter (the first bit, say) has been set to 1 after the data set S has been inserted?

Page 7: Bloom Filters

Tim Roughgarden

Heuristic Analysis

Page 8: Bloom Filters

Tim Roughgarden

Heuristic Analysis (con’d)