转:python数学建模之用optimize.linear_sum_assignment解决模型优化之指派问题_嗨,紫玉灵神熊的博客-CSDN博客
row_ind,col_ind=linear_sum_assignment(cost_matrix) 1. 2. 3. 在这里,linear_sum_assignment方法接受一个成本矩阵作为参数,并返回两个数组row_ind和col_ind。row_ind包含了分配的任务的索引,而col_ind包含了分配给工人的索引。 步骤3:解析返回结果 最后,你需要解析linear_sum_assignment方法返回的结果,并据此...
>>>importnumpyasnp>>>cost = np.array([[4,1,3], [2,0,5], [3,2,2]])>>>fromscipy.optimizeimportlinear_sum_assignment>>>row_ind, col_ind =linear_sum_assignment(cost)>>>col_ind [2,0,5], [3,2,2]])>>>fromscipy.optimizeimportlinear_sum_assignment>>>row_ind, col_ind =lin...
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linear_assignment 函数在0.21中被弃用,将从0.23中删除,但是 sklearn.utils.linear_assignment_ 可以被替换为 scipy.optimize.linear_sum_assignment 您可以使用: from scipy.optimize import linear_sum_assignment as linear_assignment 然后您可以运行该文件并且不需要更改代码。 原文由 enthusiastdev 发布,翻译遵循 CC...
py-lapsolverimplements a Linear sum Assignment Problem (LAP) solver for dense matrices based on shortest path augmentation in Python. In practice, it solves 5000x5000 problems in around 3 seconds. Install pip install [--pre] lapsolver Windows binary wheels are provided for Python 3.5/3.6. Source...
taken from: http://www.ee.oulu.fi/~mpa/matreng/eem1_2-1.htm with kCost[0][1] modified so the optimum solution is unique. """ from absl import app from ortools.graph.python import linear_sum_assignment def RunAssignmentOn4x4Matrix(): """Test linear sum assignment on a 4x4 matrix...
(X_train,y_train,lr,reg,num_iter,True)y_pred=svm.predict(X_test)val_accuracy=float(np.sum(y_pred==y_test))/y_test.shape[0]y_pred=svm.predict(X_train)train_accuracy=float(np.sum(y_pred==y_train))/y_train.shape[0]results[(lr,reg)]=[train_accuracy,val_accuracy]if(best_val<...
X (input) = Assignment Results Y (output) = Final Exam Mark f = function which describes the relationship between X and Y e (epsilon) = Random error term (positive or negative) with a mean zero (there are move assumptions for our residuals, however we won't be covering them) From ...
不降sklearn版本解决包引入问题: from sklearn.utils.linear_assignment_ import linear_assignment from scipy.optimize import linear_sum_assignment as linear_assignment 降低版本:pip install -ihttps://pypi.douban.com/simplescikit-learn==0.19.2