The number of measurement operator evaluations used by the quantifAI for the W28 image. We do not distinguish between the measurement operator and its adjoint. Therefore, evaluating the log-likelihood gradient counts as two evaluations of the measurement operator. The fast pixel UQ is three and six orders of magnitude faster than the MCMC sampling and LCIs, respectively.
| MCMC . | LCIs . | LCIs . | Fast . |
|---|---|---|---|
| sampling . | |$8 \times 8$| . | |$16 \times 16$| . | pixel UQ . |
| |$11 \times 10^{6}$| | |$81.5 \times 10^{3}$| | |$21.2 \times 10^{3}$| | 28 |
| MCMC . | LCIs . | LCIs . | Fast . |
|---|---|---|---|
| sampling . | |$8 \times 8$| . | |$16 \times 16$| . | pixel UQ . |
| |$11 \times 10^{6}$| | |$81.5 \times 10^{3}$| | |$21.2 \times 10^{3}$| | 28 |
The number of measurement operator evaluations used by the quantifAI for the W28 image. We do not distinguish between the measurement operator and its adjoint. Therefore, evaluating the log-likelihood gradient counts as two evaluations of the measurement operator. The fast pixel UQ is three and six orders of magnitude faster than the MCMC sampling and LCIs, respectively.
| MCMC . | LCIs . | LCIs . | Fast . |
|---|---|---|---|
| sampling . | |$8 \times 8$| . | |$16 \times 16$| . | pixel UQ . |
| |$11 \times 10^{6}$| | |$81.5 \times 10^{3}$| | |$21.2 \times 10^{3}$| | 28 |
| MCMC . | LCIs . | LCIs . | Fast . |
|---|---|---|---|
| sampling . | |$8 \times 8$| . | |$16 \times 16$| . | pixel UQ . |
| |$11 \times 10^{6}$| | |$81.5 \times 10^{3}$| | |$21.2 \times 10^{3}$| | 28 |
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