|
| 1 | +import random |
| 2 | + |
| 3 | +from rdagent.app.data_science.conf import DS_RD_SETTING |
| 4 | +from rdagent.core.proposal import CheckpointSelector, Trace |
| 5 | +from rdagent.log import rdagent_logger as logger |
| 6 | + |
| 7 | +# # TODO: more advanced selector |
| 8 | +# # TODO/Discussion: load selector function here or define selector class in `proposal.py`? |
| 9 | + |
| 10 | + |
| 11 | +class LatestCKPSelector(CheckpointSelector): |
| 12 | + """ |
| 13 | + -`(-1, )` represents starting from the latest trial in the trace |
| 14 | + """ |
| 15 | + |
| 16 | + def __init__( |
| 17 | + self, |
| 18 | + ): |
| 19 | + logger.info(f"Using latest selector by default") |
| 20 | + |
| 21 | + def get_selection(self, trace: Trace) -> tuple[int, ...]: |
| 22 | + |
| 23 | + return (-1,) |
| 24 | + |
| 25 | + |
| 26 | +class SOTAJumpCKPSelector(CheckpointSelector): |
| 27 | + """ |
| 28 | + SOTA jump policy: |
| 29 | + if the cumulative SOTA in a window is below a threshold, jump to a new trial |
| 30 | + otherwise, continue the current latest trial |
| 31 | + """ |
| 32 | + |
| 33 | + def __init__( |
| 34 | + self, |
| 35 | + ) -> None: |
| 36 | + self.SOTA_COUNT_WINDOW = DS_RD_SETTING.sota_count_window |
| 37 | + self.SOTA_COUNT_THRESHOLD = DS_RD_SETTING.sota_count_threshold |
| 38 | + |
| 39 | + logger.info( |
| 40 | + f"Using SOTA-jump selector with window {self.SOTA_COUNT_WINDOW} and threshold {self.SOTA_COUNT_THRESHOLD}" |
| 41 | + ) |
| 42 | + |
| 43 | + def get_selection(self, trace: Trace) -> tuple[int, ...]: |
| 44 | + |
| 45 | + current_trace = trace.retrieve_search_list(search_type="ancestors") |
| 46 | + if len(trace.hist) > 0 and len(current_trace) > self.SOTA_COUNT_WINDOW: |
| 47 | + all_exp_list = trace.experiment_and_feedback_list_after_init(return_type="all", search_type="ancestors") |
| 48 | + # sota_exp_list = trace.experiment_and_feedback_list_after_init(return_type="sota", search_type="ancestors") |
| 49 | + exp_list_in_window = all_exp_list[-self.SOTA_COUNT_WINDOW :] |
| 50 | + |
| 51 | + # compute the cumulative SOTA ratio in the window |
| 52 | + sota_count = 0 |
| 53 | + for exp, fb in exp_list_in_window: |
| 54 | + if fb.decision: |
| 55 | + sota_count += 1 |
| 56 | + if sota_count < self.SOTA_COUNT_THRESHOLD: |
| 57 | + trace.sub_trace_count += 1 |
| 58 | + logger.info( |
| 59 | + f"SOTA count {sota_count} is below threshold {self.SOTA_COUNT_THRESHOLD}, jump to a new sub-trace" |
| 60 | + ) |
| 61 | + logger.info(f"current sub-trace count: {trace.sub_trace_count}") |
| 62 | + return () |
| 63 | + else: |
| 64 | + logger.info( |
| 65 | + f"SOTA count {sota_count} is above threshold {self.SOTA_COUNT_THRESHOLD}, continue the current latest trial" |
| 66 | + ) |
| 67 | + logger.info(f"current sub-trace count: {trace.sub_trace_count}") |
| 68 | + return (-1,) |
| 69 | + |
| 70 | + else: |
| 71 | + logger.info(f"Not enough history to make a decision, continue the current latest trial") |
| 72 | + return (-1,) |
| 73 | + |
| 74 | + |
| 75 | +class BackJumpCKPSelector(CheckpointSelector): |
| 76 | + """ |
| 77 | + back-jump policy: |
| 78 | + if the cumulative SOTA in a window is below a threshold, |
| 79 | + with 50% probability, reboot a new sub-trace |
| 80 | + with 50% probability, jump back to the "last second" SOTA trial (we assume the lastest SOTA trial is not good enough selection) |
| 81 | + """ |
| 82 | + |
| 83 | + def __init__( |
| 84 | + self, |
| 85 | + ) -> None: |
| 86 | + self.SOTA_COUNT_WINDOW = DS_RD_SETTING.sota_count_window |
| 87 | + self.SOTA_COUNT_THRESHOLD = DS_RD_SETTING.sota_count_threshold |
| 88 | + |
| 89 | + logger.info( |
| 90 | + f"Using back-jump selector with window {self.SOTA_COUNT_WINDOW} and threshold {self.SOTA_COUNT_THRESHOLD}" |
| 91 | + ) |
| 92 | + |
| 93 | + def get_selection(self, trace: Trace) -> tuple[int, ...]: |
| 94 | + current_trace = trace.retrieve_search_list(search_type="ancestors") |
| 95 | + |
| 96 | + if len(trace.hist) > 0 and len(current_trace) > self.SOTA_COUNT_WINDOW: |
| 97 | + |
| 98 | + all_exp_list = trace.experiment_and_feedback_list_after_init(return_type="all", search_type="ancestors") |
| 99 | + # sota_exp_list = trace.experiment_and_feedback_list_after_init(return_type="sota", search_type="ancestors") |
| 100 | + exp_list_in_window = all_exp_list[-self.SOTA_COUNT_WINDOW :] |
| 101 | + |
| 102 | + # compute the cumulative SOTA ratio in the window |
| 103 | + sota_count = 0 |
| 104 | + for exp, fb in exp_list_in_window: |
| 105 | + if fb.decision: |
| 106 | + sota_count += 1 |
| 107 | + |
| 108 | + if sota_count < self.SOTA_COUNT_THRESHOLD: |
| 109 | + |
| 110 | + random_choice = random.random() |
| 111 | + if random_choice < 0.5: |
| 112 | + trace.sub_trace_count += 1 |
| 113 | + logger.info( |
| 114 | + f"SOTA count {sota_count} is below threshold {self.SOTA_COUNT_THRESHOLD}, jump a new sub-trace" |
| 115 | + ) |
| 116 | + return () # reboot a new sub-trace |
| 117 | + else: |
| 118 | + logger.info( |
| 119 | + f"SOTA count {sota_count} is below threshold {self.SOTA_COUNT_THRESHOLD}, jump back to the last second SOTA in hist (may not in current sub-trace)" |
| 120 | + ) |
| 121 | + sota_exp_list = trace.experiment_and_feedback_list_after_init(return_type="sota", search_type="all") |
| 122 | + if len(sota_exp_list) > 1: |
| 123 | + last_second_sota_idx = trace.hist.index(sota_exp_list[-2]) |
| 124 | + logger.info( |
| 125 | + f"jump back to the last second SOTA in hist (may not in current sub-trace), index: {last_second_sota_idx}" |
| 126 | + ) |
| 127 | + logger.info(f"current sub-trace count: {trace.sub_trace_count}") |
| 128 | + return (last_second_sota_idx,) |
| 129 | + else: |
| 130 | + trace.sub_trace_count += 1 |
| 131 | + logger.info( |
| 132 | + f"SOTA count {sota_count} is below threshold {self.SOTA_COUNT_THRESHOLD}, jump a new sub-trace" |
| 133 | + ) |
| 134 | + logger.info(f"current sub-trace count: {trace.sub_trace_count}") |
| 135 | + return () # reboot a new sub-trace |
| 136 | + |
| 137 | + else: |
| 138 | + logger.info( |
| 139 | + f"SOTA count {sota_count} is above threshold {self.SOTA_COUNT_THRESHOLD}, continue the current latest trial" |
| 140 | + ) |
| 141 | + logger.info(f"current sub-trace count: {trace.sub_trace_count}") |
| 142 | + return (-1,) |
| 143 | + else: |
| 144 | + logger.info(f"Not enough history to make a decision, continue the current latest trial") |
| 145 | + logger.info(f"current sub-trace count: {trace.sub_trace_count}") |
| 146 | + return (-1,) |
| 147 | + |
| 148 | + |
| 149 | +# TODO: implement these selectors and more |
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