link

Author: floswald

notebooks/week3/optimization1.jl

@@ -244,13 +244,9 @@ md"""
 """
 
 # ╔═╡ 34b7e91e-d67f-4554-b985-b9100adda733
-begin
-	# long form taking a vector x
-	function rosen₁(x)
-		(1-x[1])^2 + 5*(x[2] - x[1]^2)^2
-	end
-	# short form taking a vector x
-	rosen₂(x) = (1-x[1])^2 + 5*(x[2] - x[1]^2)^2
+# long form taking a vector x
+function rosen₁(x)
+	(1-x[1])^2 + 5*(x[2] - x[1]^2)^2
 end
 
 # ╔═╡ 4d2a5726-2704-4b63-b334-df5175278b18
@@ -259,6 +255,10 @@ begin
 	result = optimize(rosen₁, zeros(2), NelderMead())
 end
 
+# ╔═╡ 3270f9e3-e232-4752-949f-12f984581b19
+# short form taking a vector x
+rosen₂(x) = (1-x[1])^2 + 5*(x[2] - x[1]^2)^2
+
 # ╔═╡ 2dbb5b13-790a-4ab7-95b1-b833c4cb027a
 rosen₁([1.1,0.4]) == rosen₂([1.1,0.4])
 
@@ -287,6 +287,9 @@ begin
 	rosen₄(x,y) = (1-x[1])^2 + 5*(x[2] - x[1]^2)^2
 end
 
+# ╔═╡ 2eae1d35-df83-415f-87a5-1a5e0d1d649e
+rosen₄([1,1])
+
 # ╔═╡ 7172d082-e6d2-419b-8bb6-75e30f1b4dfe
 md"""
 ok fine, but it's often useful to keep data in a vector. Can we have the readibility of the `x,y` formulation, with the vector input?
@@ -415,7 +418,7 @@ let
 	c = 2.2
 	∂u∂c = (u(c + h) - u(c)) / h  # definition from above!
 
-	Dict(:finite_diff => ∂u∂c, :truth_wiktor => c^-2)
+	Dict(:finite_diff => ∂u∂c, :truth_Paolo => c^-2)
 end
 
 # ╔═╡ 645ef857-aff9-4dee-bfd6-72fe9d542375
@@ -2264,10 +2267,12 @@ version = "1.4.1+1"
 # ╟─3af8c139-2e6c-4830-9b67-96f78356f521
 # ╟─dd9bfbb1-aecf-458f-9a05-a93ff78fd741
 # ╠═34b7e91e-d67f-4554-b985-b9100adda733
+# ╠═3270f9e3-e232-4752-949f-12f984581b19
 # ╠═2dbb5b13-790a-4ab7-95b1-b833c4cb027a
 # ╟─f51233c4-ec66-4517-9109-5309601d1d87
 # ╟─1d698018-8b77-490d-ad3a-6c7001aa99ab
 # ╠═3729833f-80d4-4948-8d81-750008c8f16d
+# ╠═2eae1d35-df83-415f-87a5-1a5e0d1d649e
 # ╟─7172d082-e6d2-419b-8bb6-75e30f1b4dfe
 # ╠═e7841458-f641-48cf-8667-1e5b38cbd9f6
 # ╠═abbc5a52-a02c-4f5b-bd1e-af5596455762

notebooks/week4/optimization2.jl

@@ -253,13 +253,16 @@ md"""
   * But it's robust (will find global optimizer for large enough $N$)
 """
 
+# ╔═╡ adb4ee25-44cb-4294-b410-f357e26336e1
+collect(range(0, 3, length= 100))
+
 # ╔═╡ 4a0dc0c1-ce50-425b-84ca-657c93b10966
 begin
 	prob = UnconstrainedProblems.examples["Rosenbrock"]
 	ro = prob.f
 	g! = prob.g!
 	h! = prob.h!
-	grid = collect(-1.0:0.11:3);  # grid spacing is important!
+	grid = collect(-1.0:0.01:3);  # grid spacing is important!
 	grid2D = [[i;j] for i in grid,j in grid];
 	val2D = map(ro,grid2D);
 	r = findmin(val2D);
@@ -2017,6 +2020,7 @@ version = "1.4.1+0"
 # ╠═20664b8a-59d7-4d80-9926-7a982f72b276
 # ╟─625e38ee-04c1-4792-bf3e-8689bdb4df3b
 # ╟─f7fb3b3c-7c74-45eb-b1fb-c26170056d74
+# ╠═adb4ee25-44cb-4294-b410-f357e26336e1
 # ╠═4a0dc0c1-ce50-425b-84ca-657c93b10966
 # ╟─7a8a9f51-49bc-4b6d-b68d-20f06dd7e350
 # ╟─a6f1e909-9b87-42c7-b47a-d7190ba245bf

website/lecture3.md

@@ -159,7 +159,7 @@ Topic | Notebook
 :-----: | :--------:
 Intro to Macros | [click for notebook](https://floswald.github.io/julia-bootcamp/10-intro-to-macros.html)
 Intro to Differential Equations | [click for notebook](https://floswald.github.io/julia-bootcamp/08-popgrowth.html)
-Plotting | [click for notebook](https://floswald.github.io/julia-bootcamp/06-plotting.html)
+Plotting with Plots.jl | [click for notebook](https://floswald.github.io/julia-bootcamp/06-plotting.html)
 Interactive | [click for notebook](https://floswald.github.io/julia-bootcamp/07-interactive.html)
 
 

website/lecture4.md

@@ -11,4 +11,4 @@
 Topic | Notebook
 :-----: | :--------:
 Unconstrained Optimization Algorithms | [download notebook or insert URL into pluto browser](https://raw.githubusercontent.com/floswald/NumericalMethods/refs/heads/master/notebooks/week4/optimization2.jl)
-Constraints and Linear Programming | [download notebook](https://raw.githubusercontent.com/floswald/NumericalMethods/refs/heads/master/notebooks/week4/optimization3.jl)
+Constraints and Linear Programming | [download notebook](https://raw.githubusercontent.com/floswald/NumericalMethods/refs/heads/master/notebooks/week5/optimization3.jl)