Monday, December 24, 2007

Categorization Of Multidimensional Scaling

Multidimensional scaling (MDS) is a set of related statistical techniques often used in data visualization for exploring similarities or dissimilarities in data. MDS is a special case of ordination. An MDS algorithm starts with a matrix of item-item similarities, and then assigns a location of each item in a low-dimensional space, suitable for graphing or 3D visualization.
MDS algorithms fall into a taxonomy, depending on the meaning of the input matrix:
Classical multidimensional scaling
Also known as Torgerson Scaling or Torgerson-Gower scaling – takes an input matrix giving dissimilarities between pairs of items and outputs a coordinate matrix whose configuration minimizes a loss function called strain.
Metric multidimensional scaling
A superset of classical MDS that generalizes the optimisation procedure to a variety of loss functions and input matrices of known distances with weights and so on. A useful loss function in this context is called stress which is often minimized using a procedure called Stress Majorization.
Generalized multidimensional scaling (GMDS)
A superset of metric MDS that allows for the target distances to be non-Euclidean.
Non-metric multidimensional scalingIn contrast to metric MDS, non-metric MDS both finds a non-parametric monotonic relationship between the dissimilarities in the item-item matrix and the Euclidean distance between items, and the location of each item in the low-dimensional space. The relationship is typically found using isotonic regression.

Friday, December 21, 2007

Private Equity Investment Types

The Private Equity sector is broadly defined as investing in a company through a negotiated process. Investments typically involve a transformational, value-added, active management strategy.
Private Equity investments can be divided into the following categories:
  • Venture capital: an investment to create a new company, or expand a smaller company that has undeveloped or developing revenues
  • Buy-out: acquisition of a significant portion or a majority control in a more mature company. The acquisition normally entails a change of ownership
  • Special situation: investments in a distressed company, or a company where value can be unlocked as a result of a one-time opportunity
Private equity firms generally receive a return on their investments through one of three ways: an IPO, a sale or merger of the company they control, or a recapitalization. Unlisted securities may be sold directly to investors by the company (called a private offering) or to a private equity fund, which pools contributions from smaller investors to create a capital pool.
Considerations for investing in private equity funds relative to other forms of investment include:
  • Substantial entry costs, with most private equity funds requiring significant initial investment plus further investment for the first few years of the fund.
  • Investments in limited partnership interests are referred to as "illiquid" investments which should earn a premium over traditional securities, such as stocks and bonds. Once invested, it is very difficult to gain access to your money as it is locked-up in long-term investments which can last for as long as twelve years. Distributions are made only as investments are converted to cash; limited partners typically have no right to demand that sales be made.
  • If a private equity firm can't find good investment opportunities, it will not draw on an investor's commitment. Given the risks associated with private equity investments, an investor can lose all of its investment if the fund invests in failing companies. The risk of loss of capital is typically higher in venture capital funds, which invest in companies during the earliest phases of their development, and lower in mezzanine capital funds, which provide interim investments to companies which have already proven their viability but have yet to raise money from public markets.
  • Consistent with the risks outlined above, private equity can provide high returns, with the best private equity managers significantly outperforming the public markets.
For the above mentioned reasons, private equity fund investment is for those who can afford to have their capital locked in for long periods of time and who are able to risk losing significant amounts of money. This is balanced by the potential benefits of annual returns which range up to 30% for successful funds.

Wednesday, December 19, 2007

Different Types Of Income

There are three different types of incomes that one can get. Linear, Residual and Multiplex Incomes of earnings. Let’s see in brief:
  • Linear Income - here you exchange your time for money. The more money you want to earn, the more time you need to give up. Examples include salaried workers. If you stop working, your income also stops.
  • Residual Income - here you do the work once and get paid for e.g. by earning royalties. Examples include writers, singers.
  • Multiplex Income - this is income earned by leveraging. Consider the McDonald franchise concept. Ray Kroc did not become a millionaire by selling hamburgers. He had independent business owners who bought a franchise from him. They sell the hamburgers for him and each pay him a franchise fee and also a percentage of sales. What Ray has is a proven system. A system that can be duplicated. Multiplex income is based on the concept of “the power of duplication”. Examples include franchising & Network Marketing.

Friday, December 14, 2007

Affordable High Risk Medical Insurance

Finding affordable high-risk medical insurance is almost as difficult these days as finding a needle in a proverbial haystack. However, whether you are looking for affordable traditional medical insurance or you're thinking about opening a Health Savings Account, there are steps you can take that will reduce your monthly premium. Paying your premiums automatically from your bank account will save you money.

Monday, December 10, 2007

Things to Ask in Apartment Search

I have noticed some important things that need to be asked to your landlord before renting your apartment. They are crucial because their ignorance may later make you feel repent. This list of points is documented by me when I am searching for one Miami apartment. I hope these points will make your apartment search easy. The list goes as follows:
  • Size of the apartment, Number of rooms, number of bedrooms, number of bathrooms, size of the kitchen, ventilation, parking area size, windows and doors installation.
  • Range of the apartment rent in the nearby location. Check whether it is in the limits of your affordability.
  • See what all the amenities, utilities, features it has up to your requirements. Ask if you can have, if you need them, with in your limited budget.
  • Any brokerage or application fee is minimal in case of hiring any apartment search broker.
  • Make sure if you can have your pets in your apartment. Some apartments will have some restrictions and some will not allow pets.
  • Inquire and agree on the first month and last months rent. Before that make sure you have properly understood about the security deposit terms and conditions.
  • Get to know about the nearest public transportation, recreation centers, parks, malls, etc.

Related links:
Barbados luxury villas

Friday, November 23, 2007

A 10-Step Program for Search Engine Fitness

There's no silver bullet for search engine optimization. You need to do the right things a lot, over extended periods of time. Key among these are generating relevant content, gaining inbound links, and designing and coding for search friendliness.

Do these 10 exercises to start your program of search engine fitness:
automotive seo
  • Search your site on the top search engines: Google, Yahoo, MSN see how many links your site has. Search key terms and see who ranks high. Check how many links they have using a simple search.
  • List your site in a directory. This is where the search engines start.
  • Pick relevant terms. The terms you use to describe your business may not be the terms people are searching on. Use a keyword selection tool to get some directional data on search term frequency and actual search phrases.
  • Use search-friendly terms in the file names of your pages. These are the names that show up in the universal resource locator address bar at the top of your browser. Search engines place heavy emphasis on file names.
  • Insert invisible Meta tags at the top of your HTML using relative syntaxes. Search engines see them, browsers do not. Be sure to include relevant popular terms in the tags.
  • Use heading text to highlight key terms - Search engines place more emphasis on heading text.
  • Use alternate text to describe images: Search engines look for text, not images.
  • Make sure that all the important pages in your site can be reached through internal text links, not just menu navigation. Search engines cannot see graphical buttons or the text in them.
  • Include a site map. Search spiders use site maps to index your site. These and other useful tools can be found in the Google webmaster section.
  • Ask for links from high-ranking sites. Use email to contact the webmaster and tell them why they should link to you. Analyze their sites to see where/how they link to others and ask for similar links. Industry directories and reference lists are a good start. Don't mass email. Customize each request and use a spreadsheet to keep track of what requests you issued and when, and to schedule follow-up emails.
And, very importantly, don't fall prey to quick fixes or guaranteed placement schemes. Using tricks to exploit search engine algorithms will eventually backfire, resulting in penalties in the form of ranking downgrades. Stick to the basics, be patient, and move on. Organic optimization should not be a full-time job (unless you are doing it for a lot of companies). Taking these first 10 steps puts you on the path to search engine fitness. Remember, links, content, design, and persistence win the race.

Wednesday, October 24, 2007

Selecting a Right Roommate for your apartment

What will you do if you receive a message from your boss stating that you will be traveling to Fort Worth, which is miles away from your place, for some months? One of the first things you need to think about is your Fort Worth apartment, and then your rent probably would be your significant concern. No one wants to continue to empty their bank account for landlord if they have to. So you can find someone who can share apartment with you. Is the person a right one for your living style? Here are some tips finding a right roommate for your apartment.
  • If you prefer to select a friend or even someone you know as your roommate the process is fairly straightforward, send them message and ask them to forward it to people who might be interested.
  • Next thing after you choose apartment is to make sure that your landlords allow some roommates for you.
  • Choose someone who shares the same timeframe as you do.
  • See if you are comfortable with someone who is unemployed, spending hours a day among your belongings in the apartment.
  • Finding a roommate is hard work, but it is worth the extra effort to save on rent. To ensure the best chances for success, start early and set aside time to screen your potential roommate.

Wednesday, October 17, 2007

General Tips for Your Apartment Search

Apartment hunting is not easy, especially when you are searching in metros like New York, Los Angeles, Texas, and San Diego Apartments. It is an expensive housing market in these metros and you will likely be forced to make compromises in your choice. So stay focused on your budget. You may end up paying more if you are not aware of that locality. You can make your apartment search easier by being an apartment finder with real world expectations with realistic budget and dedication to serious apartment search. Plans are bit different if you want to share your apartment with a roommate.

Once you have started searching for apartment it is best to stay organized. Make sure to that you have established your priorities and you are surely known what you are looking for. Track each Apartment’s number of bedrooms, number of bathrooms, closet space, kitchen size, terms and lease options. Consider each apartment’s features, such as flooring type, separate dining rooms, gas and electric appliances, air conditioning, fireplace, washer and dryer dishwater and garbage disposal, balcony security system, storage, etc. Review each apartment’s neighborhood and community. You will probably also want to note the apartment’s closeness to public transportation schools, shopping centers your workplace, parks and recreation facilities, etc.

Monday, October 8, 2007

Buying Beds and Bedding Online

Are you looking for buying beds online??? With the help if the internet, access to a lot of bed information can give you guidance on a good number of fine items, should you then want a specialized product, such as a double bed mattress, you may be better off searching in a home improvement or bed portal, such portals will contain sections so finding a king iron bed, metal loft bed or possibly a full over full metal bunk bed will not be a problem.