Sequential search

Bellon, B., Capron, M., Druet, E., Verroust, P., Wial, M.C., Sapin, C., Girard, J.F., Foidart, J.M., Mahieu, P. and Druet, R (1982). Mercuric chloride induced autoimmune disease in Brown-Norway rats Sequential search for anti-hasement membrane antibodies and circulating immune complexes. Eur. J. Clin. Invest. 12 127-133. 

The Simplex method (and related sequential search techniques) suffers mainly from the fact that a local optimum will be found. This will especially be the case if complex samples are considered. Simplex methods require a large number of experiments (say 25). If the global optimum needs to be found, then the procedure needs to be repeated a number of times, and the total number of experiments increases proportionally. A local optimum resulting from a Simplex optimization procedure may be entirely unacceptable, because only a poor impression of the response surface is obtained. 

Simplex optimization of the primary (program) parameters in programmed temperature GC analysis has been demonstrated [612]. A systematic sequential search [613] may be used as an alternative. The Simplex method may be used to optimize a limited number of program parameters, whereas the latter approach was developed for the optimization of multisegment gradients. The use of interpretive methods has so far only been suggested [614,615]. 

For each model, the sequential search is based on the following procedure ... 

The electron affinities of the alkyl and cycloalkyl halides reported in the NIST tables are tabulated and evaluated in Appendix II. The NIST value is returned by a sequential search, using CX, CC1F, or CHX. In some cases two values that differ by more than the uncertainty have been reported so excited-state values can be assigned. Many of the Ea have only been measured by one technique thus, the experimental values could refer to an excited state. 

Kinetics and thermodynamics are always complementary for process study. While kinetics describes the rate of the process, thermodynamics analyzes its feasibility. As kinetic mechanisms describe the sequential search with the end state being a single protein having a particular function, a thermodynamic study involves... 

MatWeb. URL http //www.matweb.com. Free searchable database of material data sheets. Advanced features available to registered and premium users include sequential searching, saved searches, side-by-side comparisons, export data in different formats, hardness converter, and searchable glossary. 

The statistical parameter to optimize (e.g., maximizing by a leave-one-out validation procedure) must be selected and the maximum number E of allowed variables in a model (e.g., E = 5). The minimum number of allowed variables is usually taken equal to 1. For each size, a small group of models is selected by a preliminary evaluation of the statistical parameter to optimize. For each model, the sequential search is based on the follovhng procedure ... 

Bellon B, Capron M, Druet E, Verroust M-CV, Sapin C, Girard JF, Foidart JM, Mathieu P, Druet P. Mercuric chloride induced autoimmune disease in Brown-Norway rats sequential search for anti-basement membrane antibodies and circulating immune complexes. Bur J Clin Invest 1982 12 127-33. 

A normalized scalar product of two spectral vectors was used during matching as the similarity measure, and sequential searches through the entire library were always performed. Thus, each spectrum in turn was treated as a query. To simulate small variances in data acquisition, and/or spectral differences for very similar compounds, 1% and 5% of random white noise, has been added. Appropriate decomposition (wavelet or PCA) was then performed, and the resulting vector was compared to each of the spectral vectors in the compressed library. 

Spectra and chemical structure searches are based on distance and similarity measures as introduced in Section 5.2. Different strategies are known sequential search, search based on inverted lists, and hierarchical search trees. The strategies are explained for search of spectra. 

This kind of search is based on comparing the measured spectrum with candidate spectra of the library, bit by bit. Sequential search is only useful if a small data set is to be treated or if it is obUgatory to retrieve every individual data set. A more efficient way is to sort the entities in a database by deriving appropriate keys. 

Kiefer, J. (1957), Optimal Sequential Search and Approximation Methods under Minimum Regularity Conditions, SIAM Journal of Applied Mathematics, Vol. 5, pp. 105—136. 

Over the past several years work has been underway on the second generation parallel structure search architecture. This architecture is a completely new hardware and software implementation which builds on the already proven architectural principles of the first generation system as well as taking advantage of inverted file searching rather than sequential searching to implement the screen search algorithm. 

Define the path for sequential searches for the various topical areas ... 

This is a process that can be planned and completed in a reasonable time of 18 months. During this period the complete architecture of the software and hardware shall be completed. The sequential searching keyword structure shall be established. The server architecture, including establishment of links to member countries can be considered. Also minimum amount of data shall be posted in the servers and tested for its functioning. 

Searching can be thought of as relatively simple in contrast with the many kinds of sorting algorithms. The simple sequential search proceeds stepwise through the data structure. If the item sought is present, it will be found. If it is present, the worst case is when it is last otherwise (that is, when it is not in the list) the search is both unsuccessful and costly in terms of the number of items examined. 

Another method based on function comparison is the golden section method. The golden section method was proposed before the Fibonacci method. The golden section also exploits the position of the point still inside the new interval of uncertainty, in a sequential search. 

Parabolic interpolation usually converges faster than comparison methods in a ( ) sequential search. 

This method starts with an initial configuration of r dampers, denoted by /, and the corresponding objective function is denoted by /. Generally, Ig corresponds to the configuration obtained by either the sequential search method (SS) or any given pre-design method. In the WOBI search algorithms the objective function /is calculated... 

Figure 1. Flow chart of the sequential search method...

The structural response in term of drift and absolute accelerations are shown in Figure 8 when El Centro earthquake is considered using the sequential search algorithm (SS) with the maximum absolute acceleration (J3) and the interstory drift (J4) as objective functions. Both distributions obtained with the two indices have similar performances even if J3 will perform slightly better in accelerations and J4 slightly better in interstory drifts as expected. 

Figure 8. Structural response using sequential search algorithm (SS) with J3 and J4performance index respectively...

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