en>AManWithNoPlan: avoid unsupported cite isbn

2012-09-24T15:08:40Z

avoid unsupported cite isbn

← Older revision		Revision as of 17:08, 24 September 2012
Line 1:		Line 1:
			'''Rank SIFT''' algorithm is the revised SIFT ([[Scale-invariant feature transform]]) algorithm which uses ranking techniques to improve the performance of the SIFT algorithm. In fact, ranking techniques can be used in key point localization or descriptor generation of the original SIFT algorithm.

			==SIFT With Ranking Techniques==
			===Ranking the Key Point===
			Ranking techniques can be used to keep certain number of key points which are detected by SIFT detector.<ref>Bing Li; Rong Xiao; Zhiwei Li; Rui Cai; Bao-Liang Lu; Lei Zhang; "Rank-SIFT: Learning to rank repeatable local interest points",Computer Vision and Pattern Recognition (CVPR), 2011</ref>

	~~I'd repeat~~ the ~~majority~~ of ~~individuals out there would like to be sitting at home, doing their thing and making some money, rather than being on~~ the ~~job 9-5~~ of ~~a few days! This may definitely pipe dream~~ to ~~some but if you know~~ the ~~way to do it~~, ~~it's very achievable!~~<br><br>~~E-commerce~~. ~~If you liked this short article and you would like to obtain extra details relating to [https:~~//~~www.youtube.com~~/~~watch?v=yZ363L_28io do you need a will] kindly take a look at our own website. selling physical products online generates lots of income but this requires deep knowledge~~, ~~constant relationship with consumers~~ and ~~providers and ingests a lot time to repeat business. I wouldn't start my online business in~~ the ~~actual~~.<br><br>~~Sometimes, successfully selling on amazon means so good used books simply take a long while before they turn which you profit. Employing nature~~ of ~~your business~~.<br><br>~~Win that Buy Box and I guarantee you will increase advertising! If you have a lot of competition using products generally~~ be ~~not easy to win~~ the ~~buy textbox. To win the buy box you must be a featured merchant, is considered the have exceedingly high feedback but a majority~~ of ~~all you must have current price for~~ the ~~product~~. ~~These metrics are typically taken in account to win~~ the ~~buy box but price trumps all~~. ~~About 70% of sales are usually through the buy box so look at how [http://Www~~.~~Completely~~.~~com~~/ ~~completely~~] ~~vital it could be to win~~, ~~win~~, and ~~winning that buy container!~~<br><br>~~Bring them up from time to time~~. ~~Stress on various beneficial associated with the product~~ in ~~your testimonials~~. ~~Getting straight relevant is~~ key ~~when creating your content~~. ~~Right in the beginning encourage~~ the ~~reader are aware~~ of the ~~products amazing selling machine~~ point. ~~Actual is not to know confuse them so don't waste any time~~. ~~Your main objective here is him to order the product or services~~. ~~Elaborate slowly~~ and ~~give~~ the ~~best~~ point ~~constitute~~ the ~~start~~ of ~~the copy~~. ~~Some copywriters inside~~ the ~~mistake for being dramatic and dragging the copy, building up suspense ahead~~ of ~~to the meaty ingredient~~. ~~This will only eliminating the prospect's interest, which~~ is ~~something you do not need~~. ~~By speaking direct and with the~~ the ~~point the prospect will dissatisfied about details on employs a powerful.~~<br><br>~~Another options to sign a contract with a global Calling Seller~~. The ~~services are specialized in giving in order to worldwide calls and they~~'~~ve lower fees that pertaining to of the operators.~~ The ~~fees that they take are lowered because they have specialized services plus much more advanced technologies than one other firms. Choice comes a lot of modern western nations it~~ also ~~is good if reside for years in a certain region~~.<br><br>~~What would you like to get associated with? Clean out~~ that ~~garage~~, ~~your closet, your shed. you~~'~~ll find stuff. Ask friends and family. Offer~~ to ~~take it away completely free~~. ~~If they wanted to sell it~~, ~~strike a along with them to market it their own behalf~~ and ~~obtain a percentage.~~<br><br>~~In Conclusion nobody understands what Amazon rankings really mean~~ is ~~talking. It obviously couldn~~'~~t survive in Amazon~~'s ~~best interest to release the finer details of how their sales ranking computer algorithm actively works to determine~~ a ~~book's sales ranking~~, ~~since~~ if ~~it assisted them in both instances be more competitive or make more can~~, ~~you can rest assured they enjoy done so by of course~~.		Suppose <math>\left \{ I_m, m=0,1,...M \right \}</math> is a training image sequence and <math>p</math> is a key point obtained by SIFT detector. The following equation determines the rank of <math>p</math> in the key point set. Larger value of <math>R(p)</math> corresponds to the higher rank of <math>p</math>.

			<math> R( p \in I_0)=\sum_m I(\min_{ q \in I_m}{\lVert H_m(p)-q \rVert}_2 < \epsilon), </math>

			where <math>I(.)</math> is the indicator function, <math>H_m</math> is the homography transformation from <math>I_0</math> to <math>I_m</math>, and <math>\epsilon</math> is the threshold.

			Suppose <math>x_i</math> is the feature descriptor of key point <math>p_i</math> defined above. So <math>x_i</math> can be labeled with the rank of <math>p_i</math> in the feature vector space. Then the vector set <math>X_{feature space}=\left \{ \vec x_1, \vec x_2,...\right \}</math> containing labeled elements can be used as a training set for the [[Ranking SVM]]<ref>Joachims, T. (2003), "Optimizing Search Engines using Clickthrough Data", Proceedings of the ACM Conference on Knowledge Discovery and Data Mining</ref> problem.<br />
			<br />
			The learning process can be represented as follows:

			<math>
			\begin{array}{lcl}
			minimize: V(\vec w) = {1 \over 2} \vec w \cdot \vec w \\
			s.t.\\ \begin{array}{lcl}
			\forall\ \vec x_i\ and\ \vec x_j \in X_{feature space},\\
			\vec w^T(\vec x_i -\vec x_j)\geqq 1\quad if\ R(p_i \in I_0 )>R(p_j \in I_0).
			\end{array}
			\end{array}
			</math>

			The obtained optimal <math>\vec w^*</math> can be used to order the future key points.

			===Ranking the Elements of Descriptor===

			Ranking techniques also can be used to generate the key point descriptor.<ref>Toews, M.; Wells, W."SIFT-Rank: Ordinal Description for Invariant Feature Correspondence",Computer Vision and Pattern Recognition, 2009.</ref>

			Suppose <math> {\vec X} = \left \{ x_1,...,x_N \right \} </math> is the feature vector of a key point and the elements of <math> {R} = \left \{r_1,...r_N \right \} </math> is the corresponding rank of <math>x_i</math> in <math>X</math>. <math>r_i</math> is defined as follows:

			<math> r_i = \left\vert \left \{x_k:x_k \geqq x_i \right \} \right \vert .</math>

			After transforming original feature vector <math>\vec X</math> to the ordinal descriptor <math>\vec R</math>, the difference between two ordinal descriptors can be evaluated in the following two measurements.

			* '''''The Spearman corelation coefficient'''''
			The spearman correlation coefficient also refers to [[Spearman's rank correlation coefficient]].
			For two ordinal descriptors <math>\vec R</math> and <math>\vec R^'</math>, it can be proved that

			<math> \rho(\vec R, \vec R^') = 1- {6\sum_{i=1}^N(r_i-r_i^')^2 \over N(N^2-1)}</math>

			* '''''The Kendall's Tau'''''
			The Kedall's Tau also refers to [[Kendall tau rank correlation coefficient]].
			In the above case, the Kedall's Tau between <math>R</math> and <math>R^'</math> is

			<math>\tau(\vec R, \vec R^')= {2\sum_{i=1}^N\sum_{j=i+1}^Ns(r_i-r_j, r_i^'-r_j^')\over N(N-1)},</math>

			<math> where \quad s(a,b) =
			\begin{cases}
			1, & \text{if } sign(a) = sign(b) \\
			-1, & o.w.
			\end{cases}
			</math>

			==References==
			{{Reflist}}

			<!--- Categories --->





			[[Category:Articles created via the Article Wizard]]
			[[Category:Object recognition and categorization]]

en>MSGJ: ambox

2012-06-21T19:29:30Z

ambox

New page

I'd repeat the majority of individuals out there would like to be sitting at home, doing their thing and making some money, rather than being on the job 9-5 of a few days! This may definitely pipe dream to some but if you know the way to do it, it's very achievable! E-commerce. If you liked this short article and you would like to obtain extra details relating to [https://www.youtube.com/watch?v=yZ363L_28io do you need a will] kindly take a look at our own website. selling physical products online generates lots of income but this requires deep knowledge, constant relationship with consumers and providers and ingests a lot time to repeat business. I wouldn't start my online business in the actual. Sometimes, successfully selling on amazon means so good used books simply take a long while before they turn which you profit. Employing nature of your business. Win that Buy Box and I guarantee you will increase advertising! If you have a lot of competition using products generally be not easy to win the buy textbox. To win the buy box you must be a featured merchant, is considered the have exceedingly high feedback but a majority of all you must have current price for the product. These metrics are typically taken in account to win the buy box but price trumps all. About 70% of sales are usually through the buy box so look at how [http://Www.Completely.com/ completely] vital it could be to win, win, and winning that buy container! Bring them up from time to time. Stress on various beneficial associated with the product in your testimonials. Getting straight relevant is key when creating your content. Right in the beginning encourage the reader are aware of the products amazing selling machine point. Actual is not to know confuse them so don't waste any time. Your main objective here is him to order the product or services. Elaborate slowly and give the best point constitute the start of the copy. Some copywriters inside the mistake for being dramatic and dragging the copy, building up suspense ahead of to the meaty ingredient. This will only eliminating the prospect's interest, which is something you do not need. By speaking direct and with the the point the prospect will dissatisfied about details on employs a powerful. Another options to sign a contract with a global Calling Seller. The services are specialized in giving in order to worldwide calls and they've lower fees that pertaining to of the operators. The fees that they take are lowered because they have specialized services plus much more advanced technologies than one other firms. Choice comes a lot of modern western nations it also is good if reside for years in a certain region. What would you like to get associated with? Clean out that garage, your closet, your shed. you'll find stuff. Ask friends and family. Offer to take it away completely free. If they wanted to sell it, strike a along with them to market it their own behalf and obtain a percentage. In Conclusion nobody understands what Amazon rankings really mean is talking. It obviously couldn't survive in Amazon's best interest to release the finer details of how their sales ranking computer algorithm actively works to determine a book's sales ranking, since if it assisted them in both instances be more competitive or make more can, you can rest assured they enjoy done so by of course.

Acceleration voltage - Revision history

en>AManWithNoPlan: avoid unsupported cite isbn

en>MSGJ: ambox