Results 141 to 150 of about 1,255,138 (288)
Edge Weight Reduction Problems in Directed, Acyclic Graphs
, 1997 Let G be a weighted, directed, acyclic graph in which each edge weight is not a static quantity, but can be reduced for a certain cost. In this paper we consider the problem of determining which edges to reduce so that the length of the longest paths is ...
Susanne Hambrusch, Hung-yi Tu
core
Why theory matters for causal inference? Rethinking endogeneity in entrepreneurship research
Strategic Entrepreneurship Journal, EarlyView.Abstract Endogeneity in entrepreneurship research is often treated as a statistical complication addressable through advanced econometric tools. This commentary argues that such an approach overlooks a deeper issue: endogeneity is conceptual before it is statistical.
Daniel Tzabbar
wiley +1 more source
Strategic Entrepreneurship Journal, EarlyView.Abstract Research Summary In this manuscript, we argue that the Entrepreneurs‐as‐Scientists (E‐a‐S) research program requires a fundamental shift from predominantly conceptual development toward an empirical agenda to achieve its normative goal: developing a scalable algorithm that improves entrepreneurial learning and value creation.
Arnaldo Camuffo +2 more
wiley +1 more source
Geodetic sets for directed acyclic planar geodetic graphs
A set of vertices $S$ of a directed graph G is {\em geodetic} if every vertex of G lies on a shortest path from a vertex of S to a vertex of S. A directed graph is geodetic if there is at most one shortest path from every vertex of G to every vertex of G.
Egon Wanke, Benedekt Georg Hein
core +1 more source
Predicting Runtime in Spark‐Like Systems With Allocation‐Aware Deterministic Models
Software: Practice and Experience, EarlyView.ABSTRACT Objectives Apache Spark is widely used for distributed data processing, but accurately predicting application execution time remains challenging because performance depends on application structure, resource configuration, and executor‐allocation behavior.
Hina Tariq, Olivia Das
wiley +1 more source
A reply to the letter on 'Directed acyclic graphs for clinical research: a tutorial'. [PDF]
J Minim Invasive Surg, 2023 Lee W.
europepmc +1 more source
The Price Shock Transmission during the 2007-2008 Commodity Bull Cycle: A Structural Vector Auto-Regression Approach to the "Chicken-or-Egg" Problem [PDF]
Commodity and energy prices have exhibited an unprecedented increase between October 2006 and July 2008, only to fall sharply during the last months of 2008.
Power, Gabriel J., Vedenov, Dmitry V.
core
Graph neural network‐based attack prediction for communication‐based train control systems
CAAI Transactions on Intelligence Technology, EarlyView.Abstract The Advanced Persistent Threats (APTs) have emerged as one of the key security challenges to industrial control systems. APTs are complex multi‐step attacks, and they are naturally diverse and complex. Therefore, it is important to comprehend the behaviour of APT attackers and anticipate the upcoming attack actions.
Junyi Zhao +3 more
wiley +1 more source
Replica Placement on Directed Acyclic Graphs.
, 2014 The replica placement problem has been well studied on trees. In this paper, we study this problem on directed acyclic graphs. The replica placement problem on general DAGs generalizes the set cover problem. We present a constant factor approximation algorithm for the special case of DAGs having bounded degree and bounded tree-width (BDBT-DAGs).
Arora, Sonika +4 more
openaire +3 more sources
Journal of Animal Ecology, EarlyView.Using 18 years of data on eastern grey kangaroos, we show that drivers of individual reproductive success often do not scale up to population recruitment. Birth asynchrony could buffer population recruitment against environmental variability, such that variables affecting individual reproduction have little impact at the population level.
Rachel Bergeron +4 more
wiley +1 more source