import agentpy as ap import pandas as pd import networkx as nx from firm import FirmAgent from product import ProductAgent from orm import db_session, Result import platform import json class Model(ap.Model): def setup(self): # self para self.sample = self.p.sample self.int_stop_times, self.int_stop_t = 0, None self.int_n_iter = int(self.p.n_iter) self.product_network = None # agentpy network self.firm_network = None # agentpy network self.firm_prod_network = None # networkx self.dct_lst_disrupt_firm_prod = self.p.dct_lst_init_disrupt_firm_prod # external variable self.int_n_max_trial = int(self.p.n_max_trial) self.is_prf_size = bool(self.p.prf_size) self.flt_diff_disrupt = float(self.p.diff_disrupt) self.proactive_ratio = float(self.p.proactive_ratio) self.remove_t = int(self.p.remove_t) self.int_netw_prf_n = int(self.p.netw_prf_n) # init graph bom G_bom = nx.adjacency_graph(json.loads(self.p.g_bom)) self.product_network = ap.Network(self, G_bom) # init graph firm Firm = pd.read_csv("Firm_amended.csv") Firm['Code'] = Firm['Code'].astype('string') Firm.fillna(0, inplace=True) Firm_attr = Firm.loc[:, ["Code", "Name", "Type_Region", "Revenue_Log"]] firm_product = [] for _, row in Firm.loc[:, '1':].iterrows(): firm_product.append(row[row == 1].index.to_list()) Firm_attr.loc[:, 'Product_Code'] = firm_product Firm_attr.set_index('Code', inplace=True) G_Firm = nx.MultiDiGraph() G_Firm.add_nodes_from(Firm["Code"]) firm_labels_dict = {} for code in G_Firm.nodes: firm_labels_dict[code] = Firm_attr.loc[code].to_dict() nx.set_node_attributes(G_Firm, firm_labels_dict) # init graph firm prod Firm_Prod = pd.read_csv("Firm_amended.csv") Firm_Prod.fillna(0, inplace=True) firm_prod = pd.DataFrame({'bool': Firm_Prod.loc[:, '1':].stack()}) firm_prod = firm_prod[firm_prod['bool'] == 1].reset_index() firm_prod.drop('bool', axis=1, inplace=True) firm_prod.rename({'level_0': 'Firm_Code', 'level_1': 'Product_Code'}, axis=1, inplace=True) firm_prod['Firm_Code'] = firm_prod['Firm_Code'].astype('string') G_FirmProd = nx.MultiDiGraph() G_FirmProd.add_nodes_from(firm_prod.index) firm_prod_labels_dict = {} for code in firm_prod.index: firm_prod_labels_dict[code] = firm_prod.loc[code].to_dict() nx.set_node_attributes(G_FirmProd, firm_prod_labels_dict) # add edge to G_firm according to G_bom for node in nx.nodes(G_Firm): lst_pred_product_code = [] for product_code in G_Firm.nodes[node]['Product_Code']: lst_pred_product_code += list(G_bom.predecessors(product_code)) lst_pred_product_code = list(set(lst_pred_product_code)) # to generate consistant graph lst_pred_product_code = list(sorted(lst_pred_product_code)) for pred_product_code in lst_pred_product_code: # for each product predecessor (component) the firm need # get a list of firm producing this component lst_pred_firm = \ Firm['Code'][Firm[pred_product_code] == 1].to_list() # select multiple supplier (multi-sourcing) n_pred_firm = self.int_netw_prf_n if n_pred_firm > len(lst_pred_firm): n_pred_firm = len(lst_pred_firm) # based on size or not if self.is_prf_size: lst_pred_firm_size = \ [G_Firm.nodes[pred_firm]['Revenue_Log'] for pred_firm in lst_pred_firm] lst_prob = \ [size / sum(lst_pred_firm_size) for size in lst_pred_firm_size] lst_choose_firm = self.nprandom.choice(lst_pred_firm, n_pred_firm, replace=False, p=lst_prob) else: lst_choose_firm = self.nprandom.choice(lst_pred_firm, n_pred_firm, replace=False) lst_add_edge = [(pred_firm, node, {'Product': pred_product_code}) for pred_firm in lst_choose_firm] G_Firm.add_edges_from(lst_add_edge) # graph firm prod set_node_prod_code = set(G_Firm.nodes[node]['Product_Code']) set_pred_succ_code = set(G_bom.successors(pred_product_code)) lst_use_pred_prod_code = list( set_node_prod_code & set_pred_succ_code) for pred_firm in lst_choose_firm: pred_node = [n for n, v in G_FirmProd.nodes(data=True) if v['Firm_Code'] == pred_firm and v['Product_Code'] == pred_product_code][0] for use_pred_prod_code in lst_use_pred_prod_code: current_node = \ [n for n, v in G_FirmProd.nodes(data=True) if v['Firm_Code'] == node and v['Product_Code'] == use_pred_prod_code][0] G_FirmProd.add_edge(pred_node, current_node) # nx.to_pandas_adjacency(G_Firm).to_csv('adj_g_firm.csv') # nx.to_pandas_adjacency(G_FirmProd).to_csv('adj_g_firm_prod.csv') # unconnected node for node in nx.nodes(G_Firm): if G_Firm.degree(node) == 0: for product_code in G_Firm.nodes[node]['Product_Code']: # unconnect node does not have possible suppliers # current node in graph firm prod current_node = \ [n for n, v in G_FirmProd.nodes(data=True) if v['Firm_Code'] == node and v['Product_Code'] == product_code][0] lst_succ_product_code = list( G_bom.successors(product_code)) # different from for different types of product, # finding a common supplier (the logic above), # for different types of product, # finding a custormer for each product for succ_product_code in lst_succ_product_code: # for each product successor (finished product) # the firm sells to, # get a list of firm producing this finished product lst_succ_firm = Firm['Code'][ Firm[succ_product_code] == 1].to_list() # select multiple customer (multi-selling) n_succ_firm = self.int_netw_prf_n if n_succ_firm > len(lst_succ_firm): n_succ_firm = len(lst_succ_firm) # based on size or not if self.is_prf_size: lst_succ_firm_size = \ [G_Firm.nodes[succ_firm]['Revenue_Log'] for succ_firm in lst_succ_firm] lst_prob = \ [size / sum(lst_succ_firm_size) for size in lst_succ_firm_size] lst_choose_firm = \ self.nprandom.choice(lst_succ_firm, n_succ_firm, replace=False, p=lst_prob) else: lst_choose_firm = \ self.nprandom.choice(lst_succ_firm, n_succ_firm, replace=False) lst_add_edge = [(node, succ_firm, {'Product': product_code}) for succ_firm in lst_choose_firm] G_Firm.add_edges_from(lst_add_edge) # graph firm prod for succ_firm in lst_choose_firm: succ_node = \ [n for n, v in G_FirmProd.nodes(data=True) if v['Firm_Code'] == succ_firm and v['Product_Code'] == succ_product_code][0] G_FirmProd.add_edge(current_node, succ_node) self.sample.g_firm = json.dumps(nx.adjacency_data(G_Firm)) self.firm_network = ap.Network(self, G_Firm) self.firm_prod_network = G_FirmProd # import matplotlib.pyplot as plt # nx.draw(G_FirmProd) # plt.show() # init product for ag_node, attr in self.product_network.graph.nodes(data=True): product = ProductAgent(self, code=ag_node.label, name=attr['Name']) self.product_network.add_agents([product], [ag_node]) self.a_lst_total_products = ap.AgentList(self, self.product_network.agents) # init firm for ag_node, attr in self.firm_network.graph.nodes(data=True): firm_agent = FirmAgent( self, code=ag_node.label, name=attr['Name'], type_region=attr['Type_Region'], revenue_log=attr['Revenue_Log'], a_lst_product=self.a_lst_total_products.select([ code in attr['Product_Code'] for code in self.a_lst_total_products.code ])) self.firm_network.add_agents([firm_agent], [ag_node]) self.a_lst_total_firms = ap.AgentList(self, self.firm_network.agents) # init dct_lst_disrupt_firm_prod (from string to agent) t_dct = {} for firm_code, lst_product in self.dct_lst_disrupt_firm_prod.items(): firm = self.a_lst_total_firms.select( self.a_lst_total_firms.code == firm_code)[0] t_dct[firm] = self.a_lst_total_products.select([ code in lst_product for code in self.a_lst_total_products.code ]) self.dct_lst_disrupt_firm_prod = t_dct # set the initial firm product that are disrupted print('\n', '=' * 20, 'step', self.t, '=' * 20) for firm, a_lst_product in self.dct_lst_disrupt_firm_prod.items(): for product in a_lst_product: assert product in firm.dct_prod_up_prod_stat.keys(), \ f"product {product.code} not in firm {firm.code}" firm.dct_prod_up_prod_stat[ product]['status'].append(('D', self.t)) # proactive strategy # get all the firm prod affected for firm, a_lst_product in self.dct_lst_disrupt_firm_prod.items(): for product in a_lst_product: init_node = \ [n for n, v in self.firm_prod_network.nodes(data=True) if v['Firm_Code'] == firm.code and v['Product_Code'] == product.code][0] dct_affected = \ nx.dfs_successors(self.firm_prod_network, init_node) lst_affected = set() for i, (u, vs) in enumerate(dct_affected.items()): # at least 2 hops away if i > 0: pred_node = self.firm_prod_network.nodes[u] for v in vs: succ_node = self.firm_prod_network.nodes[v] lst_affected.add((succ_node['Firm_Code'], succ_node['Product_Code'])) lst_affected = list(lst_affected) lst_firm_proactive = \ [lst_affected[i] for i in self.nprandom.choice(range(len(lst_affected)), round(len(lst_affected) * self.proactive_ratio))] for firm_code, prod_code in lst_firm_proactive: pro_firm_prod_code = \ [n for n, v in self.firm_prod_network.nodes(data=True) if v['Firm_Code'] == firm_code and v['Product_Code'] == prod_code][0] pro_firm_prod_node = \ self.firm_prod_network.nodes[pro_firm_prod_code] pro_firm = \ self.a_lst_total_firms.select( [firm.code == pro_firm_prod_node['Firm_Code'] for firm in self.a_lst_total_firms])[0] lst_shortest_path = \ list(nx.all_shortest_paths(self.firm_prod_network, source=init_node, target=pro_firm_prod_code)) dct_drs = {} for di_supp_code in self.firm_prod_network.predecessors( pro_firm_prod_code): di_supp_node = \ self.firm_prod_network.nodes[di_supp_code] di_supp_prod = \ self.a_lst_total_products.select( [product.code == di_supp_node['Product_Code'] for product in self.a_lst_total_products])[0] di_supp_firm = \ self.a_lst_total_firms.select( [firm.code == di_supp_node['Firm_Code'] for firm in self.a_lst_total_firms])[0] lst_cand = self.model.a_lst_total_firms.select([ firm.is_prod_in_current_normal(di_supp_prod) for firm in self.model.a_lst_total_firms ]) n2n_betweenness = \ sum([True if di_supp_code in path else False for path in lst_shortest_path]) \ / len(lst_shortest_path) drs = n2n_betweenness / \ (len(lst_cand) * di_supp_firm.size) dct_drs[di_supp_code] = drs dct_drs = dict(sorted( dct_drs.items(), key=lambda kv: kv[1], reverse=True)) for di_supp_code in dct_drs.keys(): di_supp_node = \ self.firm_prod_network.nodes[di_supp_code] di_supp_prod = \ self.a_lst_total_products.select( [product.code == di_supp_node['Product_Code'] for product in self.a_lst_total_products])[0] # find a dfferent firm can produce the same product lst_cand = self.model.a_lst_total_firms.select([ firm.is_prod_in_current_normal(di_supp_prod) and firm.code != di_supp_node['Firm_Code'] for firm in self.model.a_lst_total_firms ]) if len(lst_cand) > 0: select_cand = self.nprandom.choice(lst_cand) self.firm_network.graph.add_edges_from([ (self.firm_network.positions[select_cand], self.firm_network.positions[pro_firm], { 'Product': di_supp_prod.code }) ]) # print(f"proactive add {select_cand.code} to " # f"{pro_firm.code} " # f"for {di_supp_node['Firm_Code']} " # f"{di_supp_node['Product_Code']}") # change capacity select_cand.dct_prod_capacity[di_supp_prod] -= 1 break # nx.to_pandas_adjacency(G_Firm).to_csv('adj_g_firm_proactive.csv') # draw network # self.draw_network() def update(self): self.a_lst_total_firms.clean_before_time_step() # reduce the size of disrupted firm for firm in self.a_lst_total_firms: for prod in firm.dct_prod_up_prod_stat.keys(): status, ts = firm.dct_prod_up_prod_stat[prod]['status'][-1] if status == 'D': firm.size -= \ firm.ori_size \ / len(firm.dct_prod_up_prod_stat.keys()) \ / self.remove_t print(self.t, firm.name, prod.code, firm.size) if self.t - ts + 1 == self.remove_t: # turn disrupted firm into removed firm firm.dct_prod_up_prod_stat[ prod]['status'].append(('R', self.t)) # stop simulation if all firm returned to normal except inital removal if self.t > 0: for firm in self.a_lst_total_firms: for prod in firm.dct_prod_up_prod_stat.keys(): status, ts = firm.dct_prod_up_prod_stat[prod]['status'][-1] if status == 'D' and ts != 0: print("not stop because", firm.name, prod.code) break else: continue break else: self.int_stop_times = self.t self.stop() def step(self): print('\n', '=' * 20, 'step', self.t, '=' * 20) # remove edge to customer and affect customer up product for firm in self.a_lst_total_firms: for prod in firm.dct_prod_up_prod_stat.keys(): status, ts = firm.dct_prod_up_prod_stat[prod]['status'][-1] if status == 'D' and ts == self.t-1: firm.remove_edge_to_cus_affect_cus_up_prod(prod) for n_trial in range(self.int_n_max_trial): print('=' * 10, 'trial', n_trial, '=' * 10) # seek_alt_supply # shuffle self.a_lst_total_firms self.a_lst_total_firms = self.a_lst_total_firms.shuffle() is_stop_trial = True for firm in self.a_lst_total_firms: lst_seek_prod = [] for prod in firm.dct_prod_up_prod_stat.keys(): status = firm.dct_prod_up_prod_stat[prod]['status'][-1][0] if status != 'N': for supply in firm.dct_prod_up_prod_stat[ prod]['supply'].keys(): if not firm.dct_prod_up_prod_stat[ prod]['supply'][supply]: lst_seek_prod.append(supply) # commmon supply only seek once lst_seek_prod = list(set(lst_seek_prod)) if len(lst_seek_prod) > 0: is_stop_trial = False for supply in lst_seek_prod: firm.seek_alt_supply(supply) if is_stop_trial: break # handle_request # shuffle self.a_lst_total_firms self.a_lst_total_firms = self.a_lst_total_firms.shuffle() for firm in self.a_lst_total_firms: if len(firm.dct_request_prod_from_firm) > 0: firm.handle_request() # reset dct_request_prod_from_firm self.a_lst_total_firms.clean_before_trial() # do not use: # self.a_lst_total_firms.dct_request_prod_from_firm = {} why? # turn affected firm into disrupted firm conditionally for firm in self.a_lst_total_firms: for product in firm.dct_prod_up_prod_stat.keys(): status = firm.dct_prod_up_prod_stat[product]['status'][-1][0] if status == 'A': print(firm.name, 'affected product: ', product.code) n_up_product_lost = \ sum([not stat for stat in firm.dct_prod_up_prod_stat[ product]['supply'].values()]) if n_up_product_lost == 0: continue else: lost_percent = n_up_product_lost / len( product.a_predecessors()) lst_size = self.a_lst_total_firms.size lst_size = [firm.size for firm in self.a_lst_total_firms if firm.is_prod_in_current_normal(product)] std_size = (firm.size - min(lst_size) + 1) / (max(lst_size) - min(lst_size) + 1) prob_disrupt = 1 - std_size * (1 - lost_percent) # damp prob prob_disrupt = prob_disrupt ** self.flt_diff_disrupt # sample prob prob_disrupt = self.nprandom.uniform( prob_disrupt - 0.1, prob_disrupt + 0.1) prob_disrupt = 1 if prob_disrupt > 1 else prob_disrupt prob_disrupt = 0 if prob_disrupt < 0 else prob_disrupt if self.nprandom.choice([True, False], p=[prob_disrupt, 1 - prob_disrupt]): firm.dct_prod_up_prod_stat[ product]['status'].append(('D', self.t)) print(firm.name, 'disrupted product:', product.code) else: firm.dct_prod_up_prod_stat[ product]['status'].append(('N', self.t)) def end(self): print('/' * 20, 'output', '/' * 20) # qry_result = db_session.query(Result).filter_by(s_id=self.sample.id) # if qry_result.count() == 0: # lst_result_info = [] # for t, dct in self.lst_dct_lst_disrupt_firm_prod: # for firm, a_lst_product in dct.items(): # for product in a_lst_product: # db_r = Result(s_id=self.sample.id, # id_firm=firm.code, # id_product=product.code, # ts=t, # is_disrupted=True) # lst_result_info.append(db_r) # db_session.bulk_save_objects(lst_result_info) # db_session.commit() # for t, dct in self.lst_dct_lst_disrupt_firm_prod: # for firm, a_lst_product in dct.items(): # for product in a_lst_product: # # only firm disrupted can be removed theoretically # qry_f_p = db_session.query(Result).filter( # Result.s_id == self.sample.id, # Result.id_firm == firm.code, # Result.id_product == product.code) # if qry_f_p.count() == 1: # qry_f_p.update({"is_removed": True}) # db_session.commit() # self.sample.is_done_flag = 1 # self.sample.computer_name = platform.node() # self.sample.stop_t = self.int_stop_times # db_session.commit() def draw_network(self): import matplotlib.pyplot as plt plt.rcParams['font.sans-serif'] = 'SimHei' pos = nx.nx_agraph.graphviz_layout(self.firm_network.graph, prog="twopi", args="") node_label = nx.get_node_attributes(self.firm_network.graph, 'Name') node_degree = dict(self.firm_network.graph.out_degree()) node_label = { key: f"{key} {node_label[key]} {node_degree[key]}" for key in node_label.keys() } node_size = list( nx.get_node_attributes(self.firm_network.graph, 'Revenue_Log').values()) node_size = list(map(lambda x: x**2, node_size)) edge_label = nx.get_edge_attributes(self.firm_network.graph, "Product") # multi(di)graphs, the keys are 3-tuples edge_label = {(n1, n2): label for (n1, n2, _), label in edge_label.items()} plt.figure(figsize=(12, 12), dpi=300) nx.draw(self.firm_network.graph, pos, node_size=node_size, labels=node_label, font_size=6) nx.draw_networkx_edge_labels(self.firm_network.graph, pos, edge_label, font_size=4) plt.savefig("network.png")