Created
December 11, 2013 05:33
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12.11 ErrorBar Plot for distance estimation
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| # Error Bar plot for distance estimation | |
| ### Steps | |
| * Choose an initial node | |
| * Denote other nodes' attributes $d(v)$ as the shortest path's length from $v$ to the initial node (distance to the initial node) | |
| * Estimate $D = \sum\pi(v)d(v)$, where $\pi(v) = \frac{k_v}{2|E|}$ | |
| * Useful and convenient, because we can simply apply the mean function to the sample to get unbiased estimation of $\hat{D}$. | |
| ### Graph explanation | |
| * y-axis: signed error from estimation to real $D$ | |
| ### Observation | |
| * Still, EI graphs have large errors. | |
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