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Equation 37 · Part 1 · The Real Economics of Shipping a Model to a Device

Symbol Q^*_device

Qdevice∗=(Cdev+U)/(ccloud−cd)Q^{*}_{\mathrm{device}} = (C_{\mathrm{dev}} + U) / (c_{\mathrm{cloud}} - c_{d})
Qdevice∗Q^{*}_{\mathrm{device}}

What this part means

Qd∗Q^*_device is part of the quantity the equation computes from the expression on the right.

Its job in the formula

Qd∗Q^*_device is part of the quantity the equation computes from the expression on the right.

The passage around this formula

…harder calculation, one that rises with every additional tier a release has to validate and every device already in the field that has to receive the update whether or not it ever calls the feature. Ask which term in Qdevice∗Q^{*}_{\mathrm{device}} = (CdevC_{\mathrm{dev}} + U) / (ccloudc_{\mathrm{cloud}} - cdc_{d}) a given vendor’s public statement is actually about, and whose incentive is served by leaving the other three out of the sentence.

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Learn the underlying idea

A subscript is a label attached below a symbol. It often selects a time step, component, category, or member of a sequence.

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