Plane of rotation: Difference between revisions
Jump to navigation
Jump to search
en>JohnBlackburne fix misspellings of Lounesto |
en>Quondum n-dimensions -> n dimensions |
||
| Line 1: | Line 1: | ||
< | The '''probabilistic relevance model'''<ref>{{cite | author=S. E. Robertson | coauthors=K. S. Jones | title=Relevance weighting of search terms | publisher=Journal of the American Society for Information Science | pages=129–146 | date=May-June 1976 | url=http://portal.acm.org/citation.cfm?id=106783 }}</ref> was devised by Robertson and Jones as a framework for probabilistic models to come. | ||
It makes an estimation of the probability of finding if a document ''d<sub>j</sub>'' is relevant to a query ''q''. This model assumes that this probability of relevance depends on the query and document representations. Furthermore, it assumes that there is a portion of all documents that is preferred by the user as the answer set for query ''q''. Such an ideal answer set is called ''R'' and should maximize the overall probability of relevance to that user. The prediction is that documents in this set ''R'' are relevant to the query, while documents not present in the set are non-relevant. | |||
<math>sim(d_{j,q}) = \frac{P(R|\vec{d}_j)}{P(\bar{R}|\vec{d}_j)}</math> | |||
==Related models== | |||
There are some limitations to this framework that need to be addressed by further development: | |||
* There is no accurate estimate for the first run probabilities | |||
* Index terms are not weighted | |||
* Terms are assumed mutually independent | |||
To address these and other concerns there are some developed models from the probabilistic relevance framework. The [[Binary Independence Model]] for one, as it is from the same author. The most known derivative of this framework is the [[Probabilistic_relevance_model_(BM25) | Okapi(BM25)]] weighting scheme and it's BM25F brother. | |||
==References== | |||
{{reflist}} | |||
[[Category:Information retrieval]] | |||
[[Category:Probabilistic models]] | |||
Revision as of 20:40, 6 July 2013
The probabilistic relevance model[1] was devised by Robertson and Jones as a framework for probabilistic models to come.
It makes an estimation of the probability of finding if a document dj is relevant to a query q. This model assumes that this probability of relevance depends on the query and document representations. Furthermore, it assumes that there is a portion of all documents that is preferred by the user as the answer set for query q. Such an ideal answer set is called R and should maximize the overall probability of relevance to that user. The prediction is that documents in this set R are relevant to the query, while documents not present in the set are non-relevant.
Related models
There are some limitations to this framework that need to be addressed by further development:
- There is no accurate estimate for the first run probabilities
- Index terms are not weighted
- Terms are assumed mutually independent
To address these and other concerns there are some developed models from the probabilistic relevance framework. The Binary Independence Model for one, as it is from the same author. The most known derivative of this framework is the Okapi(BM25) weighting scheme and it's BM25F brother.
References
43 year old Petroleum Engineer Harry from Deep River, usually spends time with hobbies and interests like renting movies, property developers in singapore new condominium and vehicle racing. Constantly enjoys going to destinations like Camino Real de Tierra Adentro.
- ↑ At ANZ, we perceive that owning a property shouldn't be a straightforward determination and that is why your Mortgage Specialists will spend time to understand your every precedence to ensure you make the perfect of your mortgage loan. With ANZ Property Loans, you should have access to flexible financing solutions to your properties in Singapore and Australia.
New challenge isn't the only choice for patrons. There's robust competitors from countless resale items whose homeowners are more versatile to slash costs if they are determined to promote. It appears that majority consumers of suburban properties are center-class Singaporeans, evident from their residential addresses with most displaying these of Housing Improvement Board (HDB) flats. As an alternative, Mr Nicholas Mak, realestate lecturer at Ngee Ann Polytechnic, said that developers would possibly find it more profitable to develop land from the Authorities Land Sales programme into low-rise residences. Investors show more curiosity in cluster houses, as they fetch a relatively high rental yield as compared to different forms of landed properties. District 19, Freehold strata cluster landed
As everyone knows, property in singapore is on the rise and new apartment launch are being release month by month. Investor flock in to grab these opprotunities and residential house owners are in search of for a more exqusitive lifestyle than ever. We have come to an age the place increasingly individuals are keen to spend on luxurious but affordable house for their wants. Buyers do NOT, and will NOT, need to pay any agent any price, when shopping for property in Singapore. The Singapore property market has had a very good run over the previous few years and lots of traders have made a fortune as a result. The majority of owner-occupied properties could have decrease tax rates in Singapore Price range 2013. Property Launches Listings Map (Singapore & Iskandar Malaysia) - All Properties Listed In SGDevelopersale.com
The good news is, whereas the first preview is private and usually reserved for administrators, enterprise associates, and even shareholders of the developer, the primary public preview is open to only about anyone with the means and want to purchase a unit. However you'd normally need to pre-register for it. Additionally, you will be registered for the VIP Preview should you so request. That typically involves submitting a kind listing your particulars & most well-liked items, together with your cheque. The agent will usually take care of a lot of the paperwork. Attending a preview doesn't suggest you might be obliged to purchase a unit. You may choose to not and your cheque will be returned to you. No charge involved. Name the agent to collect the paperwork for precedence reserving. Click Here To Get Rates Development
Singaporeans have historically been averse to wealth redistribution, partly because of the idea that focussing on equalising life opportunities is sufficient. When property taxes were abolished in 2008, Singapore grew to become one of the few nations that doesn't have capital features (together with property) or property taxes. Take into account the idea that Singapore wants many rich billionaires to be able to seed and develop businesses. This misunderstands the character of entrepreneurship. Henry Ford and Invoice Gates came from humble origins to construct giant corporations. Their descendants, billionaires, have not created something comparable. Much better for Singapore to foster a pleasant investment local weather and an open, innovative atmosphere. New Launch 2014 in March / April Lush Acres EC
The Peak @ Cairnhill - is the following upcoming Residential condominium in Singapore District 9. It is a Uncommon Freehold Development that can outshine the Read More b) Singapore Everlasting Residents (SPR) who already own # 1 or more residential properties must pay ABSD of three% on the acquisition or acquisition of one other residential property. SGDeveloper.com showcase unique developer new properties launches in Singapore or abroad. Our group of skilled real property consultants from varied businesses will make it easier to in securing your new dream dwelling or in your property investment wants. N ew Condominium Urban Vista Tanah Merah Launch 2013 Wishing you the very best in your search for that very best new launch property in Singapore! Click right here to learn property market information
For Mark Shen, 36, the brand new MAS regulations have dented his upgrading plans. He lives together with his wife Annie and two daughters in a resale HDB flat. "We'd planned to buy a three-bedroom rental by taking the maximum bank mortgage and stretching it over the longest period we can. However with these new measures, the loan quantum we now qualify for can probably only get us a two-bedroom unit," says Mark. quick time period good points. The impact of the SSD is especially important as it is payable regardless whether or not the property is ultimately offered at a achieve or loss. HOUSE consumers will now must stump up much more cash upfront after the Government moved to cool the property market in an surroundings of "terribly low" rates of interest. Queenstown Condominium by Hong Leong & CDL