refactor file structure

db/migrate/20250710204708_create_trained_regression_models.rb

@@ -0,0 +1,49 @@
+# typed: true
+class CreateTrainedRegressionModels < ActiveRecord::Migration[7.2]
+  def change
+    mirai_tablespace!
+
+    create_table :trained_regression_models do |t|
+      # Model identification and metadata
+      t.string :name, null: false
+      t.text :description
+      t.string :model_type, null: false # linear, quadratic, logarithmic, square_root
+
+      # Data source information
+      t.integer :total_records_count, null: false
+      t.integer :training_records_count, null: false
+      t.integer :evaluation_records_count, null: false
+      t.float :train_test_split_ratio, null: false, default: 0.8
+      t.integer :random_seed, null: false, default: 42
+      t.integer :max_points_limit # null means no limit
+
+      # Normalizer parameters for reconstruction
+      t.float :x_min, null: false
+      t.float :x_max, null: false
+      t.float :y_min, null: false
+      t.float :y_max, null: false
+
+      # Trained coefficients (stored as JSON array)
+      t.jsonb :coefficients, null: false, default: []
+
+      # Performance metrics
+      t.float :training_r_squared, null: false
+      t.float :evaluation_r_squared, null: false
+
+      # Model equation in human-readable format
+      t.text :equation_string, null: false
+
+      # Additional metadata
+      t.jsonb :metadata, default: {} # for any additional info
+
+      t.timestamps
+
+      # Indexes for efficient querying
+      t.index :name
+      t.index :model_type
+      t.index :created_at
+      t.index :training_r_squared
+      t.index :evaluation_r_squared
+    end
+  end
+end

db/structure.sql

@@ -3683,6 +3683,58 @@ CREATE TABLE public.schema_migrations (
 );
 
 
+SET default_tablespace = mirai;
+
+--
+-- Name: trained_regression_models; Type: TABLE; Schema: public; Owner: -; Tablespace: mirai
+--
+
+CREATE TABLE public.trained_regression_models (
+    id bigint NOT NULL,
+    name character varying NOT NULL,
+    description text,
+    model_type character varying NOT NULL,
+    total_records_count integer NOT NULL,
+    training_records_count integer NOT NULL,
+    evaluation_records_count integer NOT NULL,
+    train_test_split_ratio double precision DEFAULT 0.8 NOT NULL,
+    random_seed integer DEFAULT 42 NOT NULL,
+    max_points_limit integer,
+    x_min double precision NOT NULL,
+    x_max double precision NOT NULL,
+    y_min double precision NOT NULL,
+    y_max double precision NOT NULL,
+    coefficients jsonb DEFAULT '[]'::jsonb NOT NULL,
+    training_r_squared double precision NOT NULL,
+    evaluation_r_squared double precision NOT NULL,
+    equation_string text NOT NULL,
+    metadata jsonb DEFAULT '{}'::jsonb,
+    created_at timestamp(6) without time zone NOT NULL,
+    updated_at timestamp(6) without time zone NOT NULL
+);
+
+
+--
+-- Name: trained_regression_models_id_seq; Type: SEQUENCE; Schema: public; Owner: -
+--
+
+CREATE SEQUENCE public.trained_regression_models_id_seq
+    START WITH 1
+    INCREMENT BY 1
+    NO MINVALUE
+    NO MAXVALUE
+    CACHE 1;
+
+
+--
+-- Name: trained_regression_models_id_seq; Type: SEQUENCE OWNED BY; Schema: public; Owner: -
+--
+
+ALTER SEQUENCE public.trained_regression_models_id_seq OWNED BY public.trained_regression_models.id;
+
+
+SET default_tablespace = '';
+
 --
 -- Name: users; Type: TABLE; Schema: public; Owner: -
 --
@@ -4879,6 +4931,13 @@ ALTER TABLE ONLY public.pghero_query_stats ALTER COLUMN id SET DEFAULT nextval('
 ALTER TABLE ONLY public.pghero_space_stats ALTER COLUMN id SET DEFAULT nextval('public.pghero_space_stats_id_seq'::regclass);
 
 
+--
+-- Name: trained_regression_models id; Type: DEFAULT; Schema: public; Owner: -
+--
+
+ALTER TABLE ONLY public.trained_regression_models ALTER COLUMN id SET DEFAULT nextval('public.trained_regression_models_id_seq'::regclass);
+
+
 --
 -- Name: users id; Type: DEFAULT; Schema: public; Owner: -
 --
@@ -5772,6 +5831,14 @@ ALTER TABLE ONLY public.schema_migrations
     ADD CONSTRAINT schema_migrations_pkey PRIMARY KEY (version);
 
 
+--
+-- Name: trained_regression_models trained_regression_models_pkey; Type: CONSTRAINT; Schema: public; Owner: -; Tablespace: mirai
+--
+
+ALTER TABLE ONLY public.trained_regression_models
+    ADD CONSTRAINT trained_regression_models_pkey PRIMARY KEY (id);
+
+
 SET default_tablespace = '';
 
 --
@@ -7802,6 +7869,41 @@ CREATE INDEX index_pghero_query_stats_on_database_and_captured_at ON public.pghe
 CREATE INDEX index_pghero_space_stats_on_database_and_captured_at ON public.pghero_space_stats USING btree (database, captured_at);
 
 
+--
+-- Name: index_trained_regression_models_on_created_at; Type: INDEX; Schema: public; Owner: -; Tablespace: mirai
+--
+
+CREATE INDEX index_trained_regression_models_on_created_at ON public.trained_regression_models USING btree (created_at);
+
+
+--
+-- Name: index_trained_regression_models_on_evaluation_r_squared; Type: INDEX; Schema: public; Owner: -; Tablespace: mirai
+--
+
+CREATE INDEX index_trained_regression_models_on_evaluation_r_squared ON public.trained_regression_models USING btree (evaluation_r_squared);
+
+
+--
+-- Name: index_trained_regression_models_on_model_type; Type: INDEX; Schema: public; Owner: -; Tablespace: mirai
+--
+
+CREATE INDEX index_trained_regression_models_on_model_type ON public.trained_regression_models USING btree (model_type);
+
+
+--
+-- Name: index_trained_regression_models_on_name; Type: INDEX; Schema: public; Owner: -; Tablespace: mirai
+--
+
+CREATE INDEX index_trained_regression_models_on_name ON public.trained_regression_models USING btree (name);
+
+
+--
+-- Name: index_trained_regression_models_on_training_r_squared; Type: INDEX; Schema: public; Owner: -; Tablespace: mirai
+--
+
+CREATE INDEX index_trained_regression_models_on_training_r_squared ON public.trained_regression_models USING btree (training_r_squared);
+
+
 SET default_tablespace = '';
 
 --
@@ -9138,6 +9240,7 @@ ALTER TABLE ONLY public.domain_twitter_tweets
 SET search_path TO "$user", public;
 
 INSERT INTO "schema_migrations" (version) VALUES
+('20250710204708'),
 ('20250709235107'),
 ('20250628000003'),
 ('20250628000002'),