The file organization for the computerized Flora North America (FNA) data bank is described. A four level character hierarchy allows subdivision of any flora description into as many as four levels in order to specify plant character precisely. Terms at any one level will not necessarily be parallel in status. Both PLANTS and LEAVES serve as…

This description of software development for the 1970 Survey of Compensatory Education analysis contract is presented in three sections: (1) specifications for data and output, (2) descriptions of the programs written, and (3) problems encountered while processing the data. The section on Specifications contains the description of the data to be…

Evaluates the performance of different methods of data compression coding in several situations. Huffman's code, arithmetic coding, fixed codes, fast approximations to arithmetic coding, and splay coding are discussed in terms of their speed, memory requirements, and proximity to optimal performance. Recommendations for the best methods of…

Introduces the multicharacter trie as an index structure that can improve the time needed for retrieving full-text materials stored on CD-ROMs. The advantages of this structure compared to other structures are described, and experimental results comparing it to the widely used B+ tree and other structures used for full-text retrieval are…

This manual describes procedures for collecting, recording, and reporting in a uniform, timely manner critical information necessary to the making of key management decisions for parent child centers as well as for the parent child center program. The first section describes recommended data collection and recordkeeping procedures for such…

The objectives of this volume are to present the National Data Coordinator with an overview of the document input-output relationships, explain data validation and processing procedures required to produce the Quarterly Management Reports from input documents submitted by the Parent Child Centers (PCC's), and to specify system resource…

Intended to be a central source of information on where to acquire statistics on the social and economic characteristics of various racial groups, this report includes references on printed reports, computer tapes, and special calculations. The racial categories of white, negro or black, Indian, Japanese, Chinese, Filipino, Hawaiian, Korean,…