原文:[LeetCode] 311. Sparse Matrix Multiplication 稀疏矩陣相乘

Given twosparse matricesAandB, return the result ofAB. You may assume thatA s column number is equal toB s row number. Example: 給 個稀疏矩陣,返回矩陣相乘的結果。 在數值分析中,稀疏矩陣 Sparse matrix ,是其元素大部分為零的矩陣。反之,如果大部分元素都非零 ...

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Leetcode: Sparse Matrix Multiplication

70ms solution: use one HashTable: 160 ms The idea is derived from a CMU lecture. A sparse matrix can be represented as a sequence ...

Thu Dec 31 15:57:00 CST 2015 0 2301
[LeetCode] Sparse Matrix Multiplication

Problem Description: Given two sparse matrices A and B, return the result of AB. You may assume that A's column number is equal to B's row number. ...

Thu Dec 03 21:39:00 CST 2015 0 4329
用R的dgCMatrix包來構建稀疏矩陣 | sparse matrix by dgCMatrix

sparse matrix是用來存儲大型稀疏矩陣用得,單細胞表達數據基本都用這個格式來存儲,因為單細胞很大部分都是0,用普通文本矩陣存儲太占空間。 使用也是相當簡單: library("Matrix") readsCount <- read.csv("data ...

Thu Mar 29 01:16:00 CST 2018 0 3450
scipy.sparse 稀疏矩陣

from 博客園(華夏35度)http://www.cnblogs.com/zhangchaoyang 作者:Orisun 本文主要圍繞scipy中的稀疏矩陣展開,也會介紹幾種scipy之外的稀疏矩陣的存儲方式。 dok_matrix 繼承自dict,key是(row,col ...

Thu Nov 02 21:54:00 CST 2017 0 2459
 
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