 SaFReL learns the optimal policy  through an initial learning  , then reuses it during a transfer learning phase, while keeping the learning running in the long-term .
<fluency>  SaFReL learns the optimal policy  through an initial learning  , then reuses it during a transfer learning phase, while keeping the learning running in the long-term .
 SaFReL learns the optimal policy through an initial learning phase , then reuses it during a transfer learning phase, while keeping the learning running in the long-term .