powerpoint presentationaghazima/azin-files/wsdm/prince-ws… · title: powerpoint presentation...

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= ,, ,,, , ← , = , , , < , , , , ← , ← 0, ← () , , × , − ( , |)] . ( , ) ← + > 0 , ← . _max() ← − ∪ (, ) ( × × log ||) Underlying Theorem: , ) < , | , ∈\ , , , <

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Page 1: PowerPoint Presentationaghazima/Azin-files/wsdm/prince-ws… · Title: PowerPoint Presentation Author: Administrator Created Date: 1/31/2020 10:04:18 AM

𝐺 = 𝑉, 𝐸, 𝜃 , 𝑢, 𝑟𝑒𝑐, 𝐼

𝐴∗, 𝑟𝑒𝑐∗

𝐴∗ ← 𝐴, 𝑟𝑒𝑐∗ ← 𝑟𝑒𝑐

𝑖 ∈ 𝐼

𝐴𝑖 = 𝑆𝑤𝑎𝑝𝑂𝑟𝑑𝑒𝑟 𝐺, 𝑢, 𝑟𝑒𝑐, 𝑖

𝐴𝑖 < 𝐴∗

𝐴∗ ← 𝐴𝑖 , 𝑟𝑒𝑐∗ ← 𝑖

𝐴∗, 𝑟𝑒𝑐∗

𝐴 ← 𝐴𝑙𝑙 𝑢, 𝑛𝑖 , 𝐴∗← 𝜙, 𝑠𝑢𝑚 ← 0,𝐻 ← 𝑀𝑎𝑥𝐻𝑒𝑎𝑝()

𝑢, 𝑛𝑖 ∈ 𝐴

𝑑𝑖𝑓𝑓 ← 𝑊 𝑢, 𝑛𝑖 × 𝑃𝑃𝑅 𝑛𝑖 , 𝑟𝑒𝑐 𝐴 − 𝑃𝑃𝑅(𝑛𝑖 , 𝑟𝑒𝑐∗|𝐴)]

𝐻. 𝑖𝑛𝑠𝑒𝑟𝑡(𝑛𝑖 , 𝑑𝑖𝑓𝑓)

𝑠𝑢𝑚 ← 𝑠𝑢𝑚 + 𝑑𝑖𝑓𝑓

𝑠𝑢𝑚 > 0

𝑛𝑖 , 𝑑𝑖𝑓𝑓 ← 𝐻. 𝑑𝑒𝑙𝑒𝑡𝑒_max()

𝑠𝑢𝑚 ← 𝑠𝑢𝑚 − 𝑑𝑖𝑓𝑓

𝐴∗ ← 𝐴∗ ∪ (𝑢, 𝑛𝑖)

𝐴∗

𝑂( 𝐼 × 𝐴 × log |𝐴|)

Underlying Theorem: 𝑷𝑷𝑹 𝒖, 𝒓𝒆𝒄 𝑨∗) < 𝑷𝑷𝑹 𝒖, 𝒓𝒆𝒄∗|𝑨∗ ⇔ 𝒖,𝒏𝒊 ∈𝑨\𝑨∗𝑾 𝒖,𝒏𝒊 ⋅ 𝑷𝑷𝑹 𝒏𝒊, 𝒓𝒆𝒄 𝑨 − 𝑷𝑷𝑹 𝒏𝒊, 𝒓𝒆𝒄

∗ 𝑨 < 𝟎

𝑆𝑤𝑎𝑝𝑂𝑟𝑑𝑒𝑟