Article(id=1322942265471152130, tenantId=1146029695717560320, journalId=1322258508890079423, issueId=1322942002035295141, articleNumber=null, orderNo=null, doi=10.13809/j.cnki.cn32-1825/te.2025291, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1760630400000, receivedDateStr=2025-10-17, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1793343615167, onlineDateStr=2026-10-30, pubDate=1790352000000, pubDateStr=2026-09-26, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793343615167, onlineIssueDateStr=2026-10-30, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793343615167, creator=13701087609, updateTime=1793343615167, updator=13701087609, issue=Issue{id=1322942002035295141, tenantId=1146029695717560320, journalId=1322258508890079423, year='2026', volume='16', issue='5', pageStart='949', pageEnd='1136', issueExtLink='null', onlineDate='null', pubDate='1790352000000', pubDateStr='2026-09-26', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793343552359, creator='13701087609', updateTime=1793344212649, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1322944771945267389, tenantId=1146029695717560320, journalId=1322258508890079423, issueId=1322942002035295141, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1322944771945267390, tenantId=1146029695717560320, journalId=1322258508890079423, issueId=1322942002035295141, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=983, endPage=991, ext={EN=ArticleExt(id=1322942265659895811, articleId=1322942265471152130, tenantId=1146029695717560320, journalId=1322258508890079423, language=EN, title=A coalbed methane content prediction method based on an improved Stacking ensemble model, columnId=1322941494130258079, journalTitle=Petroleum Reservoir Evaluation and Development, columnName=Oil and Gas Exploration, runingTitle=null, highlight=
The traditional desorption method for determining coalbed methane (CBM) gas content suffers from high costs, long cycles, and limited regional coverage, making it unsuitable for rapid economic recoverability assessments, cost reduction, and efficiency improvement. To address this, a CBM gas content prediction method based on an improved Stacking ensemble algorithm was proposed. This method optimizes the hyperparameters of five heterogeneous base models—support vector machine (SVM), random forest (RF), XGBoost, LightGBM, and multi-layer perceptron (MLP)—through grid search. It constructed a new meta-training set by innovatively weighting and averaging the raw training-set features and prediction results from each base model, which was then input into a linear regression meta-model for secondary learning. This achieved dual integration of raw features and base-model prediction information. The model was applied to CBM blocks in the southern Qinshui Basin. The results demonstrated that the improved Stacking ensemble model achieved a coefficient of determination of 0.94 on the test set, representing improvements of 10.64% and 6.38% over the optimal single base model and standard Stacking model, respectively. Compared with the standard Stacking model, the mean absolute error, root mean square error, and mean squared error are reduced by 14.3%, 25.2%, and 43.7%, respectively. SHAP (SHapley Additive exPlanations, a method for interpreting machine learning model predictions) interpretability analysis indicated that coal seam slant depth, spontaneous potential, and natural gamma ray are the primary features influencing gas content prediction. Field application demonstrated good agreement between predicted and measured values for eight wells, with a mean absolute error below 0.84 m³/t and a mean relative error controlled within 6%. This model significantly enhances the accuracy and reliability of CBM gas content prediction, providing a new technical approach for CBM resource area selection and efficient development.
, articleAbstract=null, authors=JIE LIU1, CONG XIAO1, SHICHENG ZHANG1, JIAYUAN HE2, authorsList=JIE LIU, CONG XIAO, SHICHENG ZHANG, JIAYUAN HE, authorCompany=null, correspAuthors=CONG XIAO, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1322942268423942162, articleId=1322942265471152130, tenantId=1146029695717560320, journalId=1322258508890079423, language=CN, title=基于改进Stacking融合模型的煤层气含气量预测方法, columnId=1322941494327390371, journalTitle=油气藏评价与开发, columnName=油气勘探, runingTitle=null, highlight=
传统解吸法测定煤层气含气量存在成本高、周期长、区域覆盖难等问题,难以满足经济可采性快速评价与降本增效的需求。为此,提出一种基于改进Stacking融合模型的煤层气含气量预测方法。该方法通过网格搜索优化支持向量机、随机森林、极端梯度提升、轻量梯度提升机和多层感知机5种异构基模型的超参数,创新地将原始训练集特征与各基模型预测结果进行加权平均,构建新的元训练集,输入线性回归元模型进行二次学习,实现原始特征与基模型预测信息的双重融合。将模型应用于沁水盆地南部煤层气区块,结果表明:改进Stacking融合模型的测试集决定系数达0.94,较最优单一基模型和标准Stacking模型分别提升10.64%和6.38%;平均绝对误差、均方根误差和均方误差较标准Stacking模型分别降低14.3%、25.2%和43.7%。SHAP(是一种用于解释机器学习模型预测的方法)可解释分析表明,煤层斜深、自然电位和自然伽马是影响含气量预测的主要特征。现场应用显示,8口井预测结果与实测值吻合良好,平均绝对误差小于0.84 m³/t,平均相对误差控制在6%以内。该模型显著提升了煤层气含气量预测的精度与可靠性,为煤层气资源选区评价和高效开发提供了一种新的技术手段。
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肖聪(1989—),男,博士,副教授,从事深度学习智能反演优化理论与方法、非常规油气藏智能压裂理论与方法研究。地址:北京市昌平区府学路18号,邮政编码:102249。E-mail:
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刘杰(2000—),男,在读博士研究生,从事人工智能在压裂增产改造领域的研究。地址:北京市昌平区府学路18号,邮政编码:102249。E-mail:18323672600@163.com
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刘杰(2000—),男,在读博士研究生,从事人工智能在压裂增产改造领域的研究。地址:北京市昌平区府学路18号,邮政编码:102249。E-mail:18323672600@163.com
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1 College of Petroleum Engineering, China University of Petroleum (Beijing), Beijing 102249, China), AuthorCompanyExt(id=1322942268679794709, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942265471152130, companyId=1322942268663017491, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1 中国石油大学(北京)石油工程学院,北京 102249)]), AuthorCompany(id=1322942268738514966, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942265471152130, xref=2, ext=[AuthorCompanyExt(id=1322942268746903575, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942265471152130, companyId=1322942268738514966, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 Sinopec Petroleum Exploration and Production Research Institute, Beijing 102206, China), AuthorCompanyExt(id=1322942268755292184, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942265471152130, companyId=1322942268738514966, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 中国石化石油勘探开发研究院,北京 102206)])], figs=[ArticleFig(id=1322942272530165815, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942265471152130, language=EN, label=Fig.1, caption=
Schematic diagram of standard ensemble model structure, figureFileSmall=/MpQMLKxfFKbsTlClkZU6A==, figureFileBig=389zvOpHM310CvXqx/BhXg==, tableContent=null), ArticleFig(id=1322942272614051896, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942265471152130, language=CN, label=图1, caption=
标准融合模型结构示意图, figureFileSmall=/MpQMLKxfFKbsTlClkZU6A==, figureFileBig=389zvOpHM310CvXqx/BhXg==, tableContent=null), ArticleFig(id=1322942273389998137, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942265471152130, language=EN, label=Fig.2, caption=
Improved Stacking ensemble model structure, figureFileSmall=brbqgt/I0pMxZDMto2PXhw==, figureFileBig=B30laW2UQ7Sb+9/s1tK6XA==, tableContent=null), ArticleFig(id=1322942273490661434, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942265471152130, language=CN, label=图2, caption=
改进Stacking融合模型结构, figureFileSmall=brbqgt/I0pMxZDMto2PXhw==, figureFileBig=B30laW2UQ7Sb+9/s1tK6XA==, tableContent=null), ArticleFig(id=1322942273880731707, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942265471152130, language=EN, label=Fig.3, caption=
Characteristic parameter statistics, figureFileSmall=PbrYb83j2k1liimoKJR00g==, figureFileBig=dFFVJtMTj9IHWAQ+7elHDA==, tableContent=null), ArticleFig(id=1322942274203693116, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942265471152130, language=CN, label=图3, caption=
特征参数数据统计, figureFileSmall=PbrYb83j2k1liimoKJR00g==, figureFileBig=dFFVJtMTj9IHWAQ+7elHDA==, tableContent=null), ArticleFig(id=1322942274329522237, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942265471152130, language=EN, label=Fig.4, caption=
Correlation matrix of feature parameters, figureFileSmall=K1XgeM49jzEC3R7VK5MuCA==, figureFileBig=kCqfx9Bn9wF7IbFZSHHC2w==, tableContent=null), ArticleFig(id=1322942276300845119, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942265471152130, language=CN, label=图4, caption=
特征参数相关性矩阵, figureFileSmall=K1XgeM49jzEC3R7VK5MuCA==, figureFileBig=kCqfx9Bn9wF7IbFZSHHC2w==, tableContent=null), ArticleFig(id=1322942276409897024, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942265471152130, language=EN, label=Fig.5, caption=
Relationship between predicted values and actual values of different coalbed methane gas content prediction models, figureFileSmall=YC6FC9Os2sYy0/1qGHrrMQ==, figureFileBig=eFvBxq7tvQD9A6BGmGZimw==, tableContent=null), ArticleFig(id=1322942276514754625, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942265471152130, language=CN, label=图5, caption=
不同煤层气含气量预测模型的预测值与真实值的关系, figureFileSmall=YC6FC9Os2sYy0/1qGHrrMQ==, figureFileBig=eFvBxq7tvQD9A6BGmGZimw==, tableContent=null), ArticleFig(id=1322942276644778050, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942265471152130, language=EN, label=Fig.6, caption=
Feature parameter importance and SHAP value distribution of base models in improved Stacking model, figureFileSmall=A4xaqr3OsUHqzWpeI3oZFA==, figureFileBig=WeXNjkc/e73cAuP5enUOUA==, tableContent=null), ArticleFig(id=1322942276745441347, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942265471152130, language=CN, label=图6, caption=
改进Stacking模型的基模型特征参数重要性与SHAP值分布, figureFileSmall=A4xaqr3OsUHqzWpeI3oZFA==, figureFileBig=WeXNjkc/e73cAuP5enUOUA==, tableContent=null), ArticleFig(id=1322942276862881860, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942265471152130, language=EN, label=Fig.7, caption=
Feature parameter importance and SHAP value distribution of meta models in improved Stacking model, figureFileSmall=13Isadh/W3Al4lsYkO7G7Q==, figureFileBig=7/SH+kLtExIXdAD8TQQZzw==, tableContent=null), ArticleFig(id=1322942276942573637, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942265471152130, language=CN, label=图7, caption=
改进Stacking模型的元模型特征参数重要性与SHAP值分布, figureFileSmall=13Isadh/W3Al4lsYkO7G7Q==, figureFileBig=7/SH+kLtExIXdAD8TQQZzw==, tableContent=null), ArticleFig(id=1322942277018071110, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942265471152130, language=EN, label=Table 1, caption=
Comparative analysis of advantages and disadvantages of single machine learning models, figureFileSmall=null, figureFileBig=null, tableContent=
| 算法 | 算法机理 | 优点 | 缺点 |
|---|
| 支持向量机(SVM) | 通过核函数映射高维空间,构建最优超平面,最小化预测误差并保留边界 | 有多种核函数,灵活处理非线性关系;不易过拟合 | 不适用大量样本;可解释度较低;参数调整困难 |
| 随机森林(RF) | 构建多棵独立决策树,随机选择特征,通过投票或平均输出结果 | 可处理高维数据;并行计算,计算速度较快 | 对噪声和异常值敏感;低维数据预测性能较差 |
| 极端梯度提升(XGBoost) | 基于梯度提升树(GBDT)改进,引入正则化项,采用二阶泰勒展开优化损失函数 | 能处理缺失值;引入正则化防止过拟合 | 对超参数选择敏感 |
| 轻量梯度提升机(LightGBM) | 基于GBDT,采用直方图优化与层次学习策略,通过梯度提升优化损失函数 | 良好的预测性能和泛化能力;对噪声和异常值较稳定 | 需要调整多个超参数;训练时间较长 |
| 多层感知机(MLP) | 由输入层、隐藏层、输出层构成的前馈神经网络,通过全连接结构捕捉高维非线性信息 | 适用于处理数据非线性关系及复杂高维度问题 | 对初始占比和特征选择较敏感,容易陷入局部最优解 |
), ArticleFig(id=1322942277106151495, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942265471152130, language=CN, label=表1, caption=
单一机器学习模型优缺点对比分析
, figureFileSmall=null, figureFileBig=null, tableContent=
| 算法 | 算法机理 | 优点 | 缺点 |
|---|
| 支持向量机(SVM) | 通过核函数映射高维空间,构建最优超平面,最小化预测误差并保留边界 | 有多种核函数,灵活处理非线性关系;不易过拟合 | 不适用大量样本;可解释度较低;参数调整困难 |
| 随机森林(RF) | 构建多棵独立决策树,随机选择特征,通过投票或平均输出结果 | 可处理高维数据;并行计算,计算速度较快 | 对噪声和异常值敏感;低维数据预测性能较差 |
| 极端梯度提升(XGBoost) | 基于梯度提升树(GBDT)改进,引入正则化项,采用二阶泰勒展开优化损失函数 | 能处理缺失值;引入正则化防止过拟合 | 对超参数选择敏感 |
| 轻量梯度提升机(LightGBM) | 基于GBDT,采用直方图优化与层次学习策略,通过梯度提升优化损失函数 | 良好的预测性能和泛化能力;对噪声和异常值较稳定 | 需要调整多个超参数;训练时间较长 |
| 多层感知机(MLP) | 由输入层、隐藏层、输出层构成的前馈神经网络,通过全连接结构捕捉高维非线性信息 | 适用于处理数据非线性关系及复杂高维度问题 | 对初始占比和特征选择较敏感,容易陷入局部最优解 |
), ArticleFig(id=1322942277185843272, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942265471152130, language=EN, label=Table 2, caption=
Optimal hyperparameter combinations for base model grid search, figureFileSmall=null, figureFileBig=null, tableContent=
| 算法 | 算法超参数 | 优化组合 | 最优组合 |
|---|
| 支持向量机(SVM) | 惩罚系数C值 核函数 gamma(核函数宽度)值 | [100, 200, 300, 400] 高斯核函数,线性函数 [scale, auto] | 200 高斯核函数 auto |
| 随机森林(RF) | 决策树个数 最大深度 最小分离样本数 | [200, 300, 400, 500] [4, 5, 6, 7, 8] [2, 4, 4, 5] | 400 7 4 |
| 极端梯度提升(XGB) | 决策树个数 学习率 最大深度 | [300, 500, 600, 700] [0.01, 0.10] [3, 5, 6, 7] | 600 0.10 5 |
| 轻量梯度提升机(LGBM) | 决策树个数 学习率 最大深度 | [100, 200, 300, 500] [0.01, 0.10] [3, 6, 7, 8] | 200 0.10 7 |
| 多层感知机(MLP) | 层数 神经元数量 激活函数 | [1, 2, 3] [32, 64, 128, 160] [relu, tanh] | 2 128 relu |
), ArticleFig(id=1322942277278117961, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942265471152130, language=CN, label=表2, caption=
基模型网格搜索最优超参数组合
, figureFileSmall=null, figureFileBig=null, tableContent=
| 算法 | 算法超参数 | 优化组合 | 最优组合 |
|---|
| 支持向量机(SVM) | 惩罚系数C值 核函数 gamma(核函数宽度)值 | [100, 200, 300, 400] 高斯核函数,线性函数 [scale, auto] | 200 高斯核函数 auto |
| 随机森林(RF) | 决策树个数 最大深度 最小分离样本数 | [200, 300, 400, 500] [4, 5, 6, 7, 8] [2, 4, 4, 5] | 400 7 4 |
| 极端梯度提升(XGB) | 决策树个数 学习率 最大深度 | [300, 500, 600, 700] [0.01, 0.10] [3, 5, 6, 7] | 600 0.10 5 |
| 轻量梯度提升机(LGBM) | 决策树个数 学习率 最大深度 | [100, 200, 300, 500] [0.01, 0.10] [3, 6, 7, 8] | 200 0.10 7 |
| 多层感知机(MLP) | 层数 神经元数量 激活函数 | [1, 2, 3] [32, 64, 128, 160] [relu, tanh] | 2 128 relu |
), ArticleFig(id=1322942277345226826, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942265471152130, language=EN, label=Table 3, caption=
Test set valuation criteria for different coalbed methane gas content prediction models, figureFileSmall=null, figureFileBig=null, tableContent=
| 预测模型 | σMAE/(m3/t) | σRMSE/(m3/t) | σMSE/(m3/t) | R2 |
|---|
| SVM | 2.86 | 3.61 | 13.05 | 0.60 |
| RF | 2.31 | 2.90 | 8.42 | 0.75 |
| XGB | 1.52 | 2.25 | 5.06 | 0.82 |
| LGBM | 1.33 | 1.84 | 3.39 | 0.84 |
| MLP | 1.84 | 2.35 | 5.52 | 0.76 |
| 标准Stacking | 0.91 | 1.47 | 2.15 | 0.88 |
| 改进Stacking | 0.78 | 1.10 | 1.21 | 0.94 |
), ArticleFig(id=1322942277437501515, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942265471152130, language=CN, label=表3, caption=
不同煤层气含气量预测模型的测试集评价指标
, figureFileSmall=null, figureFileBig=null, tableContent=
| 预测模型 | σMAE/(m3/t) | σRMSE/(m3/t) | σMSE/(m3/t) | R2 |
|---|
| SVM | 2.86 | 3.61 | 13.05 | 0.60 |
| RF | 2.31 | 2.90 | 8.42 | 0.75 |
| XGB | 1.52 | 2.25 | 5.06 | 0.82 |
| LGBM | 1.33 | 1.84 | 3.39 | 0.84 |
| MLP | 1.84 | 2.35 | 5.52 | 0.76 |
| 标准Stacking | 0.91 | 1.47 | 2.15 | 0.88 |
| 改进Stacking | 0.78 | 1.10 | 1.21 | 0.94 |
), ArticleFig(id=1322942277508804684, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942265471152130, language=EN, label=Table 4, caption=
Comparison of coalbed methane gas content prediction results for eight wells at site, figureFileSmall=null, figureFileBig=null, tableContent=
| 井号 | 煤层斜深/m | 自然 伽马/API | 自然 电位/mV | 声波 时差/(μs/m) | 密度/(g/cm3) | 含气量测量值/(m3/t) | 含气量预测值/(m3/t) | 绝对误差/(m3/t) | 相对误差/% |
|---|
| 1 | 3 008.00 | 37.88 | 88.57 | 80.62 | 2.32 | 1.94 | 2.05 | 0.11 | 5.93 |
| 2 | 3 357.50 | 74.17 | 81.27 | 398.39 | 1.82 | 2.06 | 1.94 | 0.12 | 6.24 |
| 3 | 3 967.00 | 71.57 | 33.87 | 97.87 | 1.70 | 2.53 | 2.45 | 0.08 | 3.28 |
| 4 | 3 837.50 | 73.17 | 61.57 | 387.39 | 1.85 | 3.06 | 2.93 | 0.13 | 6.24 |
| 5 | 4 632.25 | 43.38 | 77.46 | 315.10 | 2.15 | 28.06 | 29.85 | 1.79 | 4.71 |
| 6 | 1 713.87 | 47.24 | 73.29 | 82.08 | 2.41 | 15.41 | 15.09 | 0.32 | 2.04 |
| 7 | 4 470.00 | 48.03 | 57.09 | 295.48 | 2.20 | 24.58 | 21.05 | 3.53 | 14.35 |
| 8 | 3 218.50 | 80.45 | 136.07 | 131.96 | 1.64 | 16.99 | 17.59 | 0.60 | 3.51 |
), ArticleFig(id=1322942277613662285, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942265471152130, language=CN, label=表4, caption=
现场8口井煤层气含气量预测结果对比
, figureFileSmall=null, figureFileBig=null, tableContent=
| 井号 | 煤层斜深/m | 自然 伽马/API | 自然 电位/mV | 声波 时差/(μs/m) | 密度/(g/cm3) | 含气量测量值/(m3/t) | 含气量预测值/(m3/t) | 绝对误差/(m3/t) | 相对误差/% |
|---|
| 1 | 3 008.00 | 37.88 | 88.57 | 80.62 | 2.32 | 1.94 | 2.05 | 0.11 | 5.93 |
| 2 | 3 357.50 | 74.17 | 81.27 | 398.39 | 1.82 | 2.06 | 1.94 | 0.12 | 6.24 |
| 3 | 3 967.00 | 71.57 | 33.87 | 97.87 | 1.70 | 2.53 | 2.45 | 0.08 | 3.28 |
| 4 | 3 837.50 | 73.17 | 61.57 | 387.39 | 1.85 | 3.06 | 2.93 | 0.13 | 6.24 |
| 5 | 4 632.25 | 43.38 | 77.46 | 315.10 | 2.15 | 28.06 | 29.85 | 1.79 | 4.71 |
| 6 | 1 713.87 | 47.24 | 73.29 | 82.08 | 2.41 | 15.41 | 15.09 | 0.32 | 2.04 |
| 7 | 4 470.00 | 48.03 | 57.09 | 295.48 | 2.20 | 24.58 | 21.05 | 3.53 | 14.35 |
| 8 | 3 218.50 | 80.45 | 136.07 | 131.96 | 1.64 | 16.99 | 17.59 | 0.60 | 3.51 |
), ArticleFig(id=1322942277693354062, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942265471152130, language=EN, label=Table 5, caption=
Performance comparison of different prediction models in coalbed methane gas content prediction, figureFileSmall=null, figureFileBig=null, tableContent=
| 模型 | 含气量测量均值/(m3/t) | 含气量预测均值/(m3/t) | 平均绝对误差/(m3/t) | 平均相对误差/% |
|---|
| 改进Stacking模型 | 11.703 | 11.495 | 0.835 | 5.875 |
| 细菌觅食优化广义回归神经网络[24] | 11.938 | 11.994 | 0.566 | 5.791 |
| 灰色系统模型[20] | 15.274 | 15.410 | 0.831 | 4.933 |
| 高斯过程回归模型[25] | 9.621 | 9.623 | — | 4.533 |
), ArticleFig(id=1322942277785628751, tenantId=1146029695717560320, journalId=1322258508890079423, articleId=1322942265471152130, language=CN, label=表5, caption=
不同预测模型在煤层气含气量预测中的性能对比
, figureFileSmall=null, figureFileBig=null, tableContent=
| 模型 | 含气量测量均值/(m3/t) | 含气量预测均值/(m3/t) | 平均绝对误差/(m3/t) | 平均相对误差/% |
|---|
| 改进Stacking模型 | 11.703 | 11.495 | 0.835 | 5.875 |
| 细菌觅食优化广义回归神经网络[24] | 11.938 | 11.994 | 0.566 | 5.791 |
| 灰色系统模型[20] | 15.274 | 15.410 | 0.831 | 4.933 |
| 高斯过程回归模型[25] | 9.621 | 9.623 | — | 4.533 |
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