of, or relating to a hierarchical system that progresses from a single, large basic unit to multiple, smaller subunits
(Finans) An investment strategy which first finds the best sectors or industries to invest in, and then searches for the best companies within those sectors or industries. This investing strategy begins with a look at the overall economic picture and then narrows it down to sectors, industries and companies that are expected to perform well. Analysis of the fundamentals of a given security is the final step
Top-down is a strategy of information processing and knowledge ordering, mostly involving software, but also other humanistic and scientific theories. In practice, it can be seen as a style of thinking and teaching. In many cases top-down is used as a synonym of analysis or decomposition.In a top-down approach an overview of the system is first formulated, specifying but not detailing any first-level subsystems. Each subsystem is then refined in yet greater detail, sometimes in many additional subsystem levels, until the entire specification is reduced to base elements
The opposite to bottom-up, where emphasis is placed primarily upon sector or country selection, with stock selection taking place subsequently
A unified structural approach which relates lower-level components in a larger framework The higher-level components and their interrelationships are identified before delving into the more detailed requirements Does not imply centralized management or direction This type of planning works best with wide-based ground-roots participation of the user and management community
A management style that begins with an assessment of the overall economic environment and makes a general asset allocation decision regarding the financial markets and various industry sectors The top- down manager selects a portfolio of individual securities within the favored sector (See bottom-up)
An approach which starts from a high (generalised) level and works towards lower (more specific) levels
of an approach to a problem that begins at the highest conceptual level and works down to the details; "a top-down analysis might begin by looking at macro-economic trends"; "top-down programming
In contrast to bottom-up, top-down means startings with abstract, high-level abilities and trying to move down to an explanation of the rest on the basis of that (schema-driven)
the building of materials and devices by carving, molding, or machining bulk materials with tools and lasers
analysis assumes that the input will be a <statement> The grammar shows how a <statement> phrase can be built up of sub-phrases, and to find a statement the analyser merely searches for each of the sub-phrases in turn To find a sub-phrase the analyser searches for each of its sub-sub-phrases, and so on until the search is reduced to a matter of searching for a single item, which it looks for in the input
An approach for analysing whole markets by using economic data, for predicting market direction, and estimating profit growth
an integration strategy for integration testing in the small, where the component at the top of the component hierarchy is tested first, with lower level components being simulated by stubs Tested components are then used to test lower level components The process is repeated until the lowest level components have been included