题目内容

以下不属于分类器评价指标的是（）。

A. 准确率
B. 召回率
C. 轮廓系数
D. 精确率

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下面不属于支持向量回归优点的是( )

A. 能抓住数据和特征之间的非线性关系
B. 不容易出现过拟合
C. 异常值影响较小
D. 计算复杂度低

常用的滚动计算函数包括

A. rolling_mean()
B. rolling_sum()
C. rolling_min()
D. rolling_max()

1Tellingyourfriendsomethingpersonalmakesherfeelyou_____hermorethanothers,saysaresearcheratHarvardUniversity.2Peopleoftenfeelfightsarenormalinmarriageandfamilyrelationshipsbutdifficulttoacceptinfriendship.Thiscancausefriendsto_toofastontheirrelationshipwhentrouble_.3Studiesshowthathavingafriend_canreduceworryduringadifficultexperience.“Ourbodies_______thattheydon’thavetorespondsomuchtodangerifsomeoneistheretohelp,”saysaresearcherinpsychology.

Research1Numberofsubjects:1)_____offriendsoftheoppositesexMethod:Eachpairoffriendswereseparatedandeachmemberwasaskedquestionsabouthisorher2)_towardtheotherone.Findings:1Menweremorelikelyto3)_theirfemalefriends,andtheytendedtobelievethattheirfemalefriendsfeltthesameway.Findings:2Womenweregenerally4)tothemenandtheybelievedtheirmalefriendsalsofeltthesameway.3Whenafemalefriendwasinlovewithsomeoneelse,menwerestilllikelyto5)_romanticdateswithher.4Womenweresensitivetotheirmalefriends’relationshipandshowed6)_inthosealreadyinlove.Research2Numberofsubjects:7)_adultsMethod:Listthepositiveandnegative8)_offriendshipswiththeoppositesex.Findings:1Malesweremuchmorelikelythanfemalestolistromanceasa9)_.2Thisdifferencebetweenmenandwomenseemedtobeeven10)_______amongolderpeople.