[Rspamd] Slight changes to neural

data/conf/rspamd/local.d/neural.conf

@@ -2,7 +2,7 @@ rules {
   "LONG" {
     train {
       max_trains = 800;
-      max_usages = 20;
+      max_usages = 40;
       max_iterations = 25;
       learning_rate = 0.01,
       spam_score = 9;
@@ -10,14 +10,14 @@ rules {
     }
     symbol_spam = "NEURAL_SPAM_LONG";
     symbol_ham = "NEURAL_HAM_LONG";
-    ann_expire = 100d;
+    ann_expire = 31d;
   }
   "SHORT" {
     train {
       max_trains = 90;
-      max_usages = 2;
-      max_iterations = 25;
-      learning_rate = 0.02,
+      max_usages = 20;
+      max_iterations = 15;
+      learning_rate = 0.01,
       spam_score = 9;
       ham_score = -4;
     }