5 ms·
I also see this kind of response a lot in situations the score is brought up. I don't have a background in compression, what is the current method for measuring
by legodt 10y ago
I also see this kind of response a lot in situations the score is brought up. I don't have a background in compression, what is the current method for measuring compression efficiency? Is it a balance between size reduction and speed to unpack or is measuring compression efficacy far more nuanced?
- dietrichepp 10y agoUsually you compare on a 2D graph, with one axis being decompression speed and the other axis being compression ratio. Sometimes decompression speed is replaced by decompression + compression speed, for round-trip data. Very rarely you only consider compression speed, for "write-many read-seldom" data (like backups). Normally, any sensible 1D metric would be visualized as isolines in that 2D plane. But the "Weissman score" doesn't even make that much sense, it's a discontinuous, non-monotonic function with singularities right in the middle! It doesn't even make sense from a dimensional analysis perspective… the score will fluctuate wildly based on the units you choose for time and size (minutes? seconds? octets? bits?). There is no conceivable real-world application of the Weissman score. It is just a bit of bad math that appeared on TV once.