Update changelog.md

manuscript/changelog.md

@@ -2,3 +2,37 @@
 
 ## 16th Aug 2024
 Changed the proposed latent processes to daily rather than weekly incremental changes.
+
+## 5th Dec 2024
+Changed priors to
+
+```julia
+"""
+Constructs and returns a dictionary of prior distributions for the latent model
+parameters. This is the default method.
+
+# Arguments
+- `pipeline`: An instance of the `AbstractEpiAwarePipeline` type.
+
+# Returns
+A dictionary containing the following prior distributions:
+- `"transformed_process_init_prior"`: A normal distribution with mean 0.0 and
+standard deviation 0.25.
+- `"std_prior"`: A half-normal distribution with standard deviation 0.25.
+- `"damp_param_prior"`: A beta distribution with shape parameters 0.5 and 0.5.
+
+"""
+function make_model_priors(pipeline::AbstractEpiAwarePipeline)
+    transformed_process_init_prior = Normal(0.0, 0.25)
+    std_prior = HalfNormal(0.025)
+    damp_param_prior = Beta(1, 9)
+    log_I0_prior = Normal(log(100.0), 1e-1)
+
+    return Dict(
+        "transformed_process_init_prior" => transformed_process_init_prior,
+        "std_prior" => std_prior,
+        "damp_param_prior" => damp_param_prior,
+        "log_I0_prior" => log_I0_prior
+    )
+end
+```