Dual-Sorted Inverted Lists in Practice⋆
... (actually, the tf t,d values) are stored in a sequence W [1, n] aligned to L. They use a theoretically appealing (but practically doomed) representation of W . We make the following practical considerations to implement this data structure. The wavelet tree is represented using a pointerless version ...
... (actually, the tf t,d values) are stored in a sequence W [1, n] aligned to L. They use a theoretically appealing (but practically doomed) representation of W . We make the following practical considerations to implement this data structure. The wavelet tree is represented using a pointerless version ...
Questions Differentiate between attributes and elements in XML
... A UDT can also be used in a new way. It can be associated with a base table, so that each attribute of the UDT maps to a column of the base table. A new data type, REF, can be used to refer to rows in such a table. Inheritance is supported for both base tables and UDT’s. It remains to be seen wheth ...
... A UDT can also be used in a new way. It can be associated with a base table, so that each attribute of the UDT maps to a column of the base table. A new data type, REF, can be used to refer to rows in such a table. Inheritance is supported for both base tables and UDT’s. It remains to be seen wheth ...
Repetition-Based Text Indexes
... The compact DAWG [BBH+ 87, CV97] can survive with a sublinear number of pointers if the text is highly repetitive, but not in the worst case, on average [BEH89] or in practice [CV97]. ...
... The compact DAWG [BBH+ 87, CV97] can survive with a sublinear number of pointers if the text is highly repetitive, but not in the worst case, on average [BEH89] or in practice [CV97]. ...
New data structures and algorithms for the efficient management of
... grids with large clusters of uniform values, with applications to the representation of binary raster data; 2) a new data structure to represent multidimensional binary grids; 3) a new data structure to represent grids of integers with support for top-k range queries. We also propose a new dynamic r ...
... grids with large clusters of uniform values, with applications to the representation of binary raster data; 2) a new data structure to represent multidimensional binary grids; 3) a new data structure to represent grids of integers with support for top-k range queries. We also propose a new dynamic r ...
Compressed Suffix Trees: Design, Construction, and Applications
... Manber and Myers [MM93] introduced another index data structure called suffix array, which only occupies n log n bits which equals four times the text size, when the text uses the ASCII alphabet and the size n of the text is smaller than 232 . The price for the space reduction was often a log n fact ...
... Manber and Myers [MM93] introduced another index data structure called suffix array, which only occupies n log n bits which equals four times the text size, when the text uses the ASCII alphabet and the size n of the text is smaller than 232 . The price for the space reduction was often a log n fact ...
Practical Parallel Data Structures
... proposed transformation to obtain fast wait-free skiplist, and binary search tree. Our study continues with an investigation of the concept of help in wait-free algorithms. The wait-free progress guarantee is often achieved by allowing some threads to help other threads complete their own work. We p ...
... proposed transformation to obtain fast wait-free skiplist, and binary search tree. Our study continues with an investigation of the concept of help in wait-free algorithms. The wait-free progress guarantee is often achieved by allowing some threads to help other threads complete their own work. We p ...
Document
... Linked lists are special lists of some data elements linked to on another. The logical ordering is represented by having each element pointing to the next element. Each element is called node, which has two parts. The INFO part which stores the information and the POINTER part, which points to the n ...
... Linked lists are special lists of some data elements linked to on another. The logical ordering is represented by having each element pointing to the next element. Each element is called node, which has two parts. The INFO part which stores the information and the POINTER part, which points to the n ...
Thesis - AllThesisOnline
... When a C programmer needs an efficient data structure for a particular problem, he or she can often simply look one up in any of a number of good textbooks or handbooks. Unfortunately, programmers in functional languages such as Standard ML or Haskell do not have this luxury. Although some data stru ...
... When a C programmer needs an efficient data structure for a particular problem, he or she can often simply look one up in any of a number of good textbooks or handbooks. Unfortunately, programmers in functional languages such as Standard ML or Haskell do not have this luxury. Although some data stru ...
Theory and Practice of Monotone Minimal Perfect Hashing 1
... Figure 1: A toy example: S D fs0 ; : : : ; s10 g is divided into three buckets of size three (except for the last one that contains just two elements), whose delimiters D D fs2 ; s5 ; s8 g appear in boldface. In the following, we will always assume that a universe u of integers, called keys, is fixe ...
... Figure 1: A toy example: S D fs0 ; : : : ; s10 g is divided into three buckets of size three (except for the last one that contains just two elements), whose delimiters D D fs2 ; s5 ; s8 g appear in boldface. In the following, we will always assume that a universe u of integers, called keys, is fixe ...
Chapter 12. The Virtual Filesystem
... directories build a tree whose root is the / directory. The root directory is contained in the root filesystem, which in Linux, is usually of type Ext2 or Ext3. All other filesystems can be "mounted" on subdirectories of the root filesystem.[*] ...
... directories build a tree whose root is the / directory. The root directory is contained in the root filesystem, which in Linux, is usually of type Ext2 or Ext3. All other filesystems can be "mounted" on subdirectories of the root filesystem.[*] ...
C++ for You++ - Skylight Publishing
... Computer science is an applied discipline, not just a set of academic theories. Therefore, the main thrust of C++ for You++ is to teach students to write effective programs. Combining our experience as a teacher and a professional software engineer, we have sought to include modern, realistic exampl ...
... Computer science is an applied discipline, not just a set of academic theories. Therefore, the main thrust of C++ for You++ is to teach students to write effective programs. Combining our experience as a teacher and a professional software engineer, we have sought to include modern, realistic exampl ...
PDF
... and ESM [11] organize end-hosts into dissemination overlays composed of unicast connections between pairs of nodes, again using TCP or UDP. However, few ALMs shape themselves to match the underlying network topology. As a result, information may traverse bottleneck links or long WAN paths multiple t ...
... and ESM [11] organize end-hosts into dissemination overlays composed of unicast connections between pairs of nodes, again using TCP or UDP. However, few ALMs shape themselves to match the underlying network topology. As a result, information may traverse bottleneck links or long WAN paths multiple t ...
Evaluating Data Structures for RuntimeStorage of Aspect Instances
... instantiation-policies can vary considerably in their semantics, they all have to implement aspect-instance look-up in one way or another. To make the implementation of new instantiation policies easier, we will suggest a baseline approach to implement aspect-instance storage and look-up. This base ...
... instantiation-policies can vary considerably in their semantics, they all have to implement aspect-instance look-up in one way or another. To make the implementation of new instantiation policies easier, we will suggest a baseline approach to implement aspect-instance storage and look-up. This base ...
B-tree
In computer science, a B-tree is a tree data structure that keeps data sorted and allows searches, sequential access, insertions, and deletions in logarithmic time. The B-tree is a generalization of a binary search tree in that a node can have more than two children (Comer 1979, p. 123). Unlike self-balancing binary search trees, the B-tree is optimized for systems that read and write large blocks of data. B-trees are a good example of a data structure for external memory. It is commonly used in databases and filesystems.