Difference between revisions of "Recipe/Example/Cake"

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=== Second pass ===
 
=== Second pass ===
  
[Category:Recipe]
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[[Category:Recipe]]

Revision as of 08:35, 1 February 2025

Product

A plain cake (pound cake) with four ingredients, like this one. Or the category Pound cakes.

Data

Four scenarios:

Four nuts product
Nutrient Product Ciqual Cake Median Cake
Fat 24 25.6 23
Sat. Fat 15 15.8 7.4
Carbohydrates 48 46 49
Sugars 29 26.8 28
Fiber 2 1.1 1.2
Proteins 6 5.94 5.8
Salt 1.4 0.52 0.8

For easy reuse:

Product (24,15,48,29,2,6,1.4)
Ciqual (25.6,15.8,46,26.8,1.1,5.94,0.52)
Median (23,7.4,49,28,1.2,5.8,0.8)

The nutritional values for the Ciqual ingredients.

Ciqual ingredients
Nutrient Flour Sugar Egg Butter
Ciqual 9445 31016 22000 16400
Fat 1.18 0 9.83 82.9
Sat. Fat 0.17 0 2.64 55.4
Carbohydrates 73.2 99.8 0.27 0.9
Sugars 1.77 99.8 0.27 0.83
Fiber 4.2 0 0 0
Proteins 9.95 0 12.7 0.7
Salt 0 0.0054 0.31 0.063
Flour: (1.18,0.17,73.2,1.77,4.2,9.95,0)
Sugar: (0,0,99.8,99.8,0,0,0.0054)
Eggs: (9.83,2.64,0.27,0.27,0,12.7,0.31)
Butter: (82.9,55.4,0.90.83,0,0.7,0.063)

Least squares fit

First pass

The table below present fit results. This compares the product against the ciqual ingredients.

Fitting results
model Flour Sugar Butter Eggs Intercept sumR2
lm 0.265 0.274 0.249 0.182 0.994 0.30
lm forced intercept 0.267 0.283 0.257 0.250 - 2.468
nnls 0.267 0.283 0.257 0.250 - 2.486

Largest residual for salt. Can we add that in?

Fitting results
model Flour Sugar Butter Eggs Salt sumR2
lm forced intercept 0.267 0.283 0.257 0.250 0.013 0.783

Residuals

The residuals for each nutrient are plotted in the graph. The amount of fiber is not well fitted (but still below 1). Can this be due to the nutritional values of flour? This is the only ingredient that contributes to fiber.

Fit residuals for cake

Second pass