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python如何实现三维荧光平行因子分析(PARAFAC分析)以及openfluor数据库对比流程

  • 2026-07-02 16:26:17
python如何实现三维荧光平行因子分析(PARAFAC分析)以及openfluor数据库对比流程
示例代码及数据文末获取
示例数据太多了,文末获取
示例代码
#代码在微信公众号,不懂绘图中,请自己翻历史图文消息。#也接代做的,代做私信即可#交流q群:954990908import osimport pickleimport matplotlib.pyplot as pltfrom EEMs_toolkit import EEMs_Dataset, read_sample_log, read_eems, read_abs, read_blankSAMPLE_LOG_PATH = r'E:\Desktop\DOM\SampleLog_PortSurveyDemo.xlsx'EEM_FOLDER = r'E:\Desktop\DOM\eem'ABS_FOLDER = r'E:\Desktop\DOM\abs'BLANK_FOLDER = r'E:\Desktop\DOM\blank'OUTPUT_DIR = r'E:\Desktop\DOM\Results'os.makedirs(OUTPUT_DIR, exist_ok=True)#读取数据sample_log = read_sample_log(SAMPLE_LOG_PATH)blank = read_blank(sample_log, BLANK_FOLDER)Abs, Abs_wave = read_abs(sample_log, ABS_FOLDER)(x, ex, em), fl = read_eems(sample_log, EEM_FOLDER)#初始化数据集data = EEMs_Dataset(x, ex, em, file_list=fl)#预处理#内滤效应校正data.inner_effect_correct(Abs_wave, Abs)#扣除空白样品data.minus_the_blank(blank)#转换为拉曼单位(RU)data.raman_areal(blank, ex=350)#切除一阶和二阶瑞利散射data.cut_ray_scatter([1515], [2015])#切除一阶和二阶拉曼散射data.cut_ram_scatter([1515], [1010])#填补NaNdata.miss_value_interpolation()#先进行初步PARAFAC(2~6组分)以检测异常data.multi_non_parafac_cal(f=[26])#画出所有因子数的异常检测图,找出在多个因子数下都位于右上角的顽固样本for f in range(27):    data.plot_outlier_test(f)    plt.savefig(os.path.join(OUTPUT_DIR, f'outlier_initial_{f}comp.png'), dpi=300)#杠杆值(Leverage)的阈值> 0.3#剔除异常样本编号放入列表# 执行剔除data.sub_dataset([201319,7131416])#重新进行 2-6 因子建模data.multi_non_parafac_cal(f=[26])#再次绘制异常检测图,检查剩余样本中是否还有异常for f in range(27):    data.plot_outlier_test(f)    plt.savefig(os.path.join(OUTPUT_DIR, f'outlier_iter1_{f}comp.png'), dpi=300)      #确定最佳因子数#折半验证data.split_analysis([26])#The 3-component Model Validated!说明三组分可以#Not Validated!就说明不行data.plot_factor_similarity()#核一致性和解释率data.plot_core_consistency_and_explanation()#> 60% 表明模型结构合理(数据支持该数量的成分);< 60% 说明模型过拟合或因子数太多;接近 0 或负数 说明模型完全无效。#2 组分:86.35%#3 组分:18.45%(远低于 60%,崩塌)因此适合2组分#残差分析(观察残差是否随机分布)for f in range(23):    data.plot_residual_error(f)    plt.savefig(os.path.join(OUTPUT_DIR, f'residual_error_{f}comp.png'), dpi=300)    #根据以上结果选择最佳因子数best_f = 3#最终模型输出#绘制分半验证图data.plot_split_result(best_f)#绘制各成分的 EEM 轮廓data.plot_fingers(best_f)#绘制载荷图data.plot_loadings(best_f)#最大荧光强度变化data.plot_fmax(best_f)#3D 曲面图data.plot_3deem_by1(best_f)#单个样本的 EEM 等高线图data.plot_eem_by1(f=best_f, sample_id=[135])#绘制带有区域分界的 FRI 图for idx in range(16):    data.plot_fri() #导出PARAFAC结果(FMax、载荷、组分EEM)data.parafac_result_output(best_f, output_path=OUTPUT_DIR)#计算并输出荧光指数(FI, HIX, BIX)data.fluorescence_indices_output(output_path=OUTPUT_DIR)#计算并输出荧光区域积分(FRI)#data.fri_result_output(output_path=OUTPUT_DIR)#生成OpenFluor兼容文件data.open_fluor(best_f, output_path=OUTPUT_DIR,                name="My DOM PARAFAC model",                creator="Your Name",                email="your.email@domain.com",                fluorometer="Hitachi F-7000",                sources="River water",                ecozones="Temperate",                method="PARAFAC",                preprocess="Blank subtraction, IFE correction, Raman normalization, scatter removal, interpolation")#保存整个对象with open(os.path.join(OUTPUT_DIR, 'final_parafac_model.pickle'), 'wb'as f:    pickle.dump(data, f)

讲解视频:

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微生物数据分析优质合集:

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DOM进行FTMS分析推荐:

傅里叶变换离子回旋共振质谱仪(FTMS)数据处理培训

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示例数据及代码:

通过网盘分享的文件:DOM平行因子.zip

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  1. CONNECT:[ UseTime:0.000680s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000882s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000320s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000274s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000581s ]
  6. SELECT * FROM `set` [ RunTime:0.000199s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000595s ]
  8. SELECT * FROM `article` WHERE `id` = 503014 LIMIT 1 [ RunTime:0.000532s ]
  9. UPDATE `article` SET `lasttime` = 1782990571 WHERE `id` = 503014 [ RunTime:0.010374s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000257s ]
  11. SELECT * FROM `article` WHERE `id` < 503014 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000496s ]
  12. SELECT * FROM `article` WHERE `id` > 503014 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000375s ]
  13. SELECT * FROM `article` WHERE `id` < 503014 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000737s ]
  14. SELECT * FROM `article` WHERE `id` < 503014 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.007875s ]
  15. SELECT * FROM `article` WHERE `id` < 503014 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.005243s ]
0.108683s