On the sum-of-squares degree of symmetric quadratic functions
We study how well functions over the boolean hypercube of the form f_k(x)=(lxl-k)(lxl-k-1) can be approximated by sums of squares of low-degree polynomials, obtaining good bounds for the case of approximation in l_{infinity}-norm as well as in l_1-norm. We describe three complexity-theoretic applica...
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| Main Authors: | , , , |
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| 格式: | Article |
| 語言: | English |
| 出版: |
2018
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| 主題: | |
| 在線閱讀: | https://hdl.handle.net/10356/90218 http://hdl.handle.net/10220/47238 |
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| 機構: | Nanyang Technological University |
| 語言: | English |