| Data Analysis(R) |
| Data Analysis(Python) |
| Case Study |
| Statistics |
| Data Warehouse |
| Database System |
| SQL Server |
| Impala |
| Hive |
| Hadoop |
| Regular Expressions |
| Working Smart |
| Blog |
| Philosophy |
| Link |
| Miscellaneous |
| __ edit |
旧 蠍磯.
[edit]
1 #
: http://www.ktword.co.kr/abbr_view.php?nav=2&m_temp1=5254&id=1109
u <- c(1,2,3,4) v <- c(10,20,30) convolve(u,rev(v), type="open")
蟆郁骸
> convolve(u,rev(v), type="open") [1] 10 40 100 160 170 120
蠍一 t 螳
- t1 = 1 * 10 = 10
- t2 = 1 * 20 + 2 * 10 = 40
- t3 = 1 * 30 + 2 * 20 + 3 * 10 = 100
- t4 = 2 * 30 + 3 * 20 + 4 * 10 = 160
- t5 = 3 * 30 + 4 * 20 = 170
- t6 = 4 * 30 = 120
鏤