Horatio Clare's A Single Swallow: Following An Epic Journey From South PDF

By Horatio Clare

ISBN-10: 1409076245

ISBN-13: 9781409076247

From the slums of Cape city to the palaces of Algiers, via Pygmy villages the place pineapples develop wild, to the Gulf of Guinea the place the ocean blazes with oil flares, throughout continents and fourteen international locations - this epic trip is not anything to swallows, they do it two times a 12 months. yet for Horatio Clare, author and birdwatcher, it's the day trip of a life-time.

Along the way in which he discovers outdated empires and glossy tribes, a witch-doctor's recipe for stewed swallow, explains tips to commute with out funds or a passport, and describes a terrifying incident concerning 3 Spanish infantrymen and a tiny orange puppy. via trains, motorbikes, canoes, one camel and 3 ships, Clare follows the swallows from reed beds in South Africa, the place thousands roost in February, to a barn in Wales, the place a couple nest in may well.

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Additional resources for A Single Swallow: Following An Epic Journey From South Africa To South Wales

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It is based on MAX–MIN Ant System and on the traveling salesman problem. The computations reported allow to observe some relations between the the values of the parameters of the algorithm and the exploration performed. Such an understanding will allow to better analyze the behavior of the procedure. More practically, it will allow to properly set the parameters, once the exploration needed in a run is decided. In these first experiments, only one parameter at a time is varied, and no local search is applied.

Sensitive agents (or ants) allow many types of reactions to a changing environment facilitating an efficient balance between exploration and exploitation. 1 Introduction The paper develops a metaheuristic technique called Sensitive Ant Model (SAM) [1] intended to address combinatorial optimization problems. SAM combines stigmergic communication and heterogeneous agent behavior. Agents are endowed with the capability of indirect communication triggered by changes that occur in the environment. Similar with the Ant Colony System (ACS) model, each SAM agent (or ant) deposits a substance called pheromone on a specific path.

Variable sensitivity can potentially induce various types of reactions to a changing environment useful in solving NP-hard problems by facilitating a better balance between search diversification and exploitation. The proposed SAM metaheuristic proved to be useful for solving TSP. Experimental results indicate that SAM obtains better results compared to the standard ACS model for most of the problem instances considered. -M. Pintea, C. Chira, and D. Dumitrescu Future work focuses on testing the proposed SAM metaheuristic for complex optimization problems with a dynamic character.

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A Single Swallow: Following An Epic Journey From South Africa To South Wales by Horatio Clare

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