Computing depth orders and related problems -- Selection in monotone matrices and computing k th nearest neighbors -- New on-line algorithms for the page replication problem -- Serving requests with on-line routing -- A new algorithm for the construction of optimal B-trees -- New results on binary space partitions in the plane (extended abstract) -- A nearly optimal parallel algorithm for the Voronoi diagram of a convex polygon -- On triangulating planar graphs under the four-connectivity constraint -- Parallel and sequential approximation of shortest superstrings -- Separating translates in the plane: Combinatorial bounds and an algorithm -- Finding all weakly-visible chords of a polygon in linear time -- A tight lower bound for on-line monotonic list labeling -- Trapezoid graphs and generalizations, geometry and algorithms -- Optimal parametric search on graphs of bounded tree-width -- Lower bounds for dynamic algorithms -- Sequential and parallel algorithms for embedding problems on classes of partial k-trees -- On intersection searching problems involving curved objects -- Improved approximations of independent sets in bounded-degree graphs -- Asymptotically optimal election on weighted rings -- Optimal algorithms for broadcast and gossip in the edge-disjoint path modes -- Recent results in hardness of approximation -- The parallel hierarchical memory model -- Randomized geometric algorithms (abstract) -- Connecting the maximum number of grid nodes to the boundary with non-intersecting line segments -- On self-stabilizing wait-free clock synchronization -- Hard graphs for randomized subgraph exclusion algorithms -- Task scheduling in networks -- Parallel dynamic lowest common ancestors -- An O(log log n) algorithm to compute the kernel of a polygon -- Computing the L 1-diameter and center of a simple rectilinear polygon in parallel -- Exploiting locality in LT-RAM computations -- Efficient preprocessing of simple binary pattern forests -- A parallel algorithm for edge-coloring partial k-trees -- Dominating cliques in distance-hereditary graphs.

This volume constitutes the proceedings of SWAT '94, the 4th Scandinavian Workshop on Algorithm Theory, held in Aarhus, Denmark in July 1994. The SWAT events are organized each even year and alternate with the WADS meetings (Workshops on Algorithms and Data Structures) held each odd year in North America. The volume contains 31 papers selected from a total of 100 submissions and 3 invited presentations by Michael Fredman (Rutgers), Johan Hastad (Stockholm), and Ketan Mulmuley (Chicago). The contributions cover algorithms and data structures in all areas of computer science and in discrete mathematics, particularly including graph theory, computational geometry, and databases.