Video: Puas yog cosine zoo sib xws symmetrical?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Ib qho yooj yim txaus zoo sib xws ntsuas yog qhov cosine zoo sib xws ntsuas. Kom meej meej, nws yog reflexive (cos(v, v) = 1) thiab symmetrical (cos(v, w) = cos(w, v)). Tab sis nws kuj tseem hloov tau: yog tias cos(v, w) nyob ze 1, thiab cos(w, z) nyob ze 1, ces cos(v, z) ze 1.
Dhau li ntawm no, cosine zoo sib xws txhais li cas?
Cosine zoo sib xws yog ib tug metric siv los ntsuas li cas zoo sib xws cov ntaub ntawv tsis hais txog ntawm lawv qhov loj me. Ua lej, nws ntsuas qhov cosine ntawm lub kaum sab xis ntawm ob vectors projected nyob rau hauv ib tug multi-dimensional qhov chaw.
Tsis tas li ntawd, koj yuav nrhiav tau qhov sib xws ntawm cosine li cas? Cosine zoo sib xws yog cov cosine ntawm lub kaum sab xis ntawm ob n-dimensional vectors nyob rau hauv ib qho chaw n-dimensional. Nws yog cov khoom dot ntawm ob vectors faib los ntawm cov khoom ntawm ob vectors ' lengths (los yog magnitudes).
Kuj paub, yog cosine zoo sib xws txawv?
Muab ob lub vectors, peb txiav txim siab qhov chaw ntawm qhov chaw ua haujlwm ntawm cov vectors. Lub kaum sab xis ntawm ob lub ntsej muag normals yog qhov zoo sib xws ntsuas. Lub convex nqi function yuav tsum tsis sib txawv nyob txhua qhov chaw.
Qhov zoo sib xws ntawm soft cosine yog dab tsi?
A soft cosine los yog (" mos " zoo sib xws ) ntawm ob vectors xam zoo sib xws nruab nrab ntawm khub ntawm nta. Piv txwv li, nyob rau hauv lub teb ntawm natural language processing (NLP) lub zoo sib xws ntawm nta yog heev intuitive.
Pom zoo:
Dab tsi yog qhov zoo sib xws thiab qhov sib txawv ntawm qhov nrawm thiab nrawm?
Kev sib piv daim duab piv rau Kev Sib Piv Ceev Ceev Tus Nqi Hloov ntawm qhov kev ncua deb Hloov pauv hloov thaum lub cev rov qab mus rau nws qhov chaw pib Yuav tsis xoom Yuav yog xoom Tsiv khoom Ceev ntawm cov khoom txav tsis tuaj yeem tsis zoo. Kev nrawm ntawm cov khoom txav tuaj yeem yog qhov zoo, tsis zoo lossis xoom
Dab tsi yog qhov zoo sib xws thiab qhov sib txawv ntawm kinetic thiab lub zog muaj peev xwm?
Lub Zog Muaj Peev Xwm yog lub zog khaws cia hauv ib qho khoom lossis qhov system vim nws txoj haujlwm lossis kev teeb tsa. Kinetic zog ntawm ib yam khoom yog txheeb ze rau lwm yam khoom txav thiab nyob ruaj ruaj hauv nws qhov chaw tam sim ntawd
Puas yog ob txoj kab sib luag zoo sib xws lossis tsis sib xws?
Yog tias ob qhov sib npaug piav txog kab sib luag, thiab yog li cov kab uas tsis sib tshuam, qhov system yog ywj siab thiab tsis sib haum. Yog hais tias ob qhov sib npaug piav txog tib kab, thiab yog li cov kab uas hla tus lej tsis kawg, lub kaw lus yog nyob ntawm thiab sib xws
Koj tuaj yeem ua pov thawj li cas 2 daim duab peb sab zoo sib xws siv lub kaum sab xis sab SAS zoo sib xws postulate?
SAS Similarity Theorem hais tias yog ob sab hauv ib daim duab peb sab yog proportional rau ob sab hauv lwm daim duab peb sab thiab lub kaum sab xis nyob rau hauv ob qho tib si congruent, ces ob daim duab peb sab zoo ib yam. Ib qho kev hloov pauv zoo sib xws yog ib lossis ntau qhov kev hloov pauv tsis tu ncua ua raws li kev dilation
Koj tuaj yeem qhia tau li cas yog tias kev sib raug zoo yog symmetrical?
Ib qho kev sib raug zoo yog qhov sib luag yog tias, peb pom tias rau txhua qhov txiaj ntsig ntawm a thiab b: a R b implies b R a. Kev sib raug zoo ntawm kev sib npaug dua yog symmetrical. Yog tias x = y, peb tuaj yeem sau tias y = x thiab