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# Author: Simon Blanke |
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# Email: [email protected] |
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# License: MIT License |
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import glob |
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import hashlib |
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import numpy as np |
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import pandas as pd |
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from functools import partial |
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from .memory_io import MemoryIO |
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def apply_tobytes(df): |
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return df.values.tobytes() |
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class MemoryLoad(MemoryIO): |
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def __init__(self, _space_, _main_args_, _cand_, memory_dict): |
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super().__init__(_space_, _main_args_, _cand_, memory_dict) |
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self.pos_best = None |
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self.score_best = -np.inf |
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self.memory_type = _main_args_.memory |
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self.memory_dict = memory_dict |
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self.meta_data_found = False |
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def _load_memory(self, _cand_, _verb_): |
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para, score = self._read_func_metadata(_cand_.func_, _verb_) |
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if para is None or score is None: |
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return |
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_verb_.load_samples(para) |
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_cand_.eval_time = list(para["eval_time"]) |
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self._load_data_into_memory(para, score) |
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self.n_dims = len(para.columns) |
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def apply_index(self, pos_key, df): |
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return ( |
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self._space_.search_space[pos_key].index(df) |
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if df in self._space_.search_space[pos_key] |
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else None |
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) |
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def _read_func_metadata(self, model_func, _verb_): |
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paths = self._get_func_data_names() |
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meta_data_list = [] |
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for path in paths: |
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meta_data = pd.read_csv(path) |
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meta_data_list.append(meta_data) |
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self.meta_data_found = True |
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if len(meta_data_list) > 0: |
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meta_data = pd.concat(meta_data_list, ignore_index=True) |
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column_names = meta_data.columns |
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score_name = [name for name in column_names if self.score_col_name in name] |
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para = meta_data.drop(score_name, axis=1) |
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score = meta_data[score_name] |
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_verb_.load_meta_data() |
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return para, score |
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else: |
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_verb_.no_meta_data(model_func) |
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return None, None |
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def _get_func_data_names(self): |
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paths = glob.glob( |
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self.func_path + (self.feature_hash + "_" + self.label_hash + "_.csv") |
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) |
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return paths |
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def _get_hash(self, object): |
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return hashlib.sha1(object).hexdigest() |
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def para2pos(self, paras): |
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paras = paras[self._space_.para_names] |
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pos = paras.copy() |
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for pos_key in self._space_.search_space: |
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apply_index = partial(self.apply_index, pos_key) |
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pos[pos_key] = paras[pos_key].apply(apply_index) |
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pos.dropna(how="any", inplace=True) |
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pos = pos.astype("int64") |
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return pos |
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def _load_data_into_memory(self, paras, scores): |
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paras = paras.replace(self.hash2obj) |
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pos = self.para2pos(paras) |
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if len(pos) == 0: |
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return |
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df_temp = pd.DataFrame() |
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df_temp["pos_str"] = pos.apply(apply_tobytes, axis=1) |
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df_temp["score"] = scores |
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self.memory_dict = df_temp.set_index("pos_str").to_dict()["score"] |
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scores = np.array(scores) |
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paras = np.array(paras) |
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idx = np.argmax(scores) |
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self.score_best = scores[idx] |
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self.pos_best = paras[idx] |
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SimonBlanke /
Hyperactive
