linear algebra and learning from data amazon

2.93631291e-11 2.32992690e-11 1.84860002e-111.46657377E-11]rmse=0.10, r2=0.90, r22=0.68, clf.score=0.90As you can see, the coefficient parameters of the 100-time polynomial become very small. Most are close to 0.It is also worth noting that the R2 values of 1 and 2 polynomial regressions may be slightly lower than the basic linear regression after using a penalty model such as Ridge regression.However, such a model, even using 100-time polynomial, in

stack intPop ();//out of the stack voidInputsqstack (intn);//INPUT Element voidOutputsqstack ();//Traverse Output}; voidSqstack::initsqstack () {Elem=New int[Stack_size]; Top=-1; StackSize=Stack_size;} intSqstack::gettop () {if(top==-1) cout"Empty Stack"Endl; intE =Elem[top]; returne;}intsqstack::length () {if(top==-1) cout"Empty Stack"Endl; returntop+1;} voidsqstack::D estroysqstack () {Delete[] elem; Top=-1; StackSize=0; } voidSqstack::clearsqstack () {Top=-1;}voidSqstack::P Ush (in

{ while(front) {Node*p; P=front->Next; DeleteFront; Front=p;} } voidEnQueue (intV);//to queue element x intDeQueue ();//put the team head element out of the team intGetqueue ();//the team head element of the fetch chain queue BOOLIsEmpty ();//determine if the chain queue is empty voidIntput (intN); voidOutput ();Private: Node*front, *rear;//team head and tail pointers, respectively, pointing to the head node and terminal node .}; voidQueue::enqueue (intv) {N

STACK: in computer science, a linear table is only inserted or deleted at the end of the table. Stack is a data structure. It stores data based on the principle of "first-in-first-out". The first data is pushed to the bottom of the stack, and the last data is placed at the t

varTMP = This. Head; the while(true){ About if(pos = =i) { the Break; the } thepos++; +TMP =Tmp.next; - } the returntmp;Bayi }; theDblLinkListAdt.prototype.empty =function(){ the return This. head.next?false:true; - }; -DblLinkListAdt.prototype.clear =function(){ the This. Head.next =NULL; the }; theDblLinkListAdt.prototype.locate =function(data) { the if( This. Empty ()) { - return-

Linear Table Interface Llist: Package com.clarck.datastructure.linear; /** * Linear table Interface Llist, describing the linear table abstract data type, the generic parameter T represents the data type of the data element *

Linked listThe first is the structural bodytypedef int ElementType; To make it easier to modify the type of elements in the list typedef struct NODE{ELEMENTTYPE date;struct node* Next;} List; List L,*ptrl;A function to find the length of a chain tableint Length (List *ptrl) {list* P =ptrl;int j=0;while (p) {p=p->next;j++;} return J;}Find by Locationlist* findkth (int k,list *ptrl) {List *p=ptrl;int i=0;while (p!=null iFind by valuelist* Find (ElementType X, list* Ptrl) {list* P =ptrl;while (p!=

Swaps the two sequential table positions in the array, which will be (b1,b2 bn) put to (A1,a2 AM) front.Solution One:Adds all the elements in the array (a1,a2, am,b1,b2, bn) in-situ inversion (bn,bn-1, B1,am,am-1 A1), the first n elements and the rear m elements are respectively reversed, resulting (b1,b2 BN,A1,A2 AM) to achieve position interchangeability.Code:voidReverse (intA[],intLeftintRightintarraySize) {//reversal (aleft,aleft+1,aleft+2,aright) for (aright,aright-1,,aleft) if(Left>=rig

Linear tables are generally divided into sequential structures and chain-structured structures.The address of the element in the sequential table is continuous, such as an array, the address of the node inside the list is not continuous, it is connected by pointers, such as single linked list;The advantages and disadvantages of the sequential table and the list structure: (from Baidu know)① Sequential structure:Advantages: Easy to query, index fast LI

right, delete the nth number, then start from the new number, so loop until the last number leftAnalysis: This process can be simulated with a cyclic link listvar cl = init (;p rint (CL), var num = 0;var reject = 2;var Head = Cl;var Curr = Cl.next;var tmp = {};while (listlength (CL) > 1) { if (curr! = head) { num++; } if (num = = reject) { tmp = Curr.next; if (tmp! = head) { num = 0; Curr.next = Tmp.next; } } Curr = Curr.next;} Co