[Gzz-commits] gzz/Documentation/misc/hemppah-progradu mastert...

[Hermanni Hyytiälä]

CVSROOT:        /cvsroot/gzz
Module name:    gzz
Changes by:     Hermanni Hyytiälä <address@hidden>      03/03/17 06:42:01

Modified files:
        Documentation/misc/hemppah-progradu: masterthesis.tex 

Log message:
        Better intro

CVSWeb URLs:
http://savannah.gnu.org/cgi-bin/viewcvs/gzz/gzz/Documentation/misc/hemppah-progradu/masterthesis.tex.diff?tr1=1.151&tr2=1.152&r1=text&r2=text

Patches:
Index: gzz/Documentation/misc/hemppah-progradu/masterthesis.tex
diff -u gzz/Documentation/misc/hemppah-progradu/masterthesis.tex:1.151 
gzz/Documentation/misc/hemppah-progradu/masterthesis.tex:1.152
--- gzz/Documentation/misc/hemppah-progradu/masterthesis.tex:1.151      Mon Mar 
17 05:06:11 2003
+++ gzz/Documentation/misc/hemppah-progradu/masterthesis.tex    Mon Mar 17 
06:42:01 2003
@@ -43,10 +43,10 @@
 In this thesis, we review existing Peer-to-Peer approaches, algorithms and 
their
 key properties. We summarize open problems in Peer-to-Peer systems and divide
 problems into three sub-categories. We observe that there are many
-problems, which have no solutions at all, or problems that have proposed
-solutions but they are practically unrealizable.
+problems which have no solutions at all, or problems that have proposed
+solutions but which are practically unrealizable.
 
-Then, we give an overview of Fenfire system.  We evaluate existing
+Then, we give an overview of the Fenfire system.  We evaluate existing
 Peer-to-Peer approaches-- loosely and tightly structured overlays-- with regard
 to Fenfire's needs. Finally, we propose simple methods to efficiently find 
Fenfire
 data from Peer-to-Peer network.
@@ -81,8 +81,8 @@
 \chapter{Introduction}
 
 Peer-to-Peer systems have recently received considerable attention in both 
-academia \cite{projectirisurl} and industry \cite{p2pworkinggroup}, 
\cite{jxtaurl} for a 
-number of reasons. The lack of centralization 
+academia \cite{projectirisurl} and industry \cite{p2pworkinggroup, jxtaurl} 
for a 
+number of reasons. The lack of centralization in Peer-to-Peer systems
 means that the participants can form a distributed system without any 
investment to 
 centralized hardware which would coordinate it by sharing their services
 and connecting to each other directly. Additionally, the distributed and ad 
hoc nature of 
@@ -91,14 +91,14 @@
 There are many definitions of Peer-to-Peer networks. Schollmeier 
\cite{schollmeier01p2pdefinition} 
 describes Peer-to-Peer system as a system of 
 distributed entities that share their own services. Indeed, Peer-to-Peer 
systems can be characterized as distributed 
-systems in which all communication is symmetric and all participants entities 
have similar 
+systems in which all communication is symmetric and all participant entities 
have similar 
 capabilities and responsibilities. Each entity, i.e., \emph{peer}, may 
contribute services 
 to the overall system.
 
-Fenfire project is an attempt to build hyperstructured, seamlessly 
interoperating desktop 
-environment. In Fenfire, all data is stored in the same format, i.e., data 
blocks.  
-All blocks have globally unique identifiers and they can be referred by other 
blocks, i.e., 
-pointer blocks. Additional features of Fenfire include innovative user 
+The Fenfire project is an attempt to build hyperstructured, seamlessly 
interoperating desktop 
+environment. In Fenfire, all data is stored as data blocks.  
+All data blocks have globally unique identifiers and they can be referred by 
pointer blocks. 
+Other features of Fenfire include innovative user 
 interfaces for viewing data and usage of Peer-to-Peer networking for network 
transparency. 
 
 In this thesis, we\footnote{Use of the plural is customary even if research 
@@ -106,33 +106,33 @@
 choose the best alternative to Fenfire's needs. 
 
 We start by reviewing existing Peer-to-Peer approaches, algorithms and their 
key properties. 
-We observe that despite of great amount of proposed Peer-to-Peer systems, all 
systems fall either to
+We observe that despite the great amount of proposed Peer-to-Peer systems, all 
systems fall either to
 loosely structured approach or tightly structured approach. We also discuss 
open problems in 
 Peer-to-Peer systems and divide problems into three sub-categories: security 
problems, 
 performance problems and miscellaneous problems.  
 
 Then, we give an overview of Fenfire project, and evaluate Peer-to-Peer 
approaches to Fenfire's 
-needs. Finally, we propose yet simple but efficient methods to be used for 
data lookups in Peer-to-Peer 
+needs. Finally, we propose simple but yet efficient methods to be used for 
data lookups in Peer-to-Peer 
 environment. 
 
-We have attempted to comprehensively summarize existing algorithms and open 
problems in 
+We attempt to comprehensively summarize existing algorithms and open problems 
in 
 Peer-to-Peer domain. However, this thesis is not meant to be detailed work. 
More detailed 
-information can be found from references written by original authors.
+information can be found from the references.
 
-There are three research problems related to this thesis. First research 
problem
-is to find the most efficient way to locate and fetch Fenfire data blocks from 
the 
-Peer-to-Peer network, where block's identifier is given. Second, we want
-to find the most efficient way to locate and fetch most recent Fenfire data 
block from the
-Peer-to-Peer network referred by a pointer block. Third problem
-is otherwise same as the second problem, except we want to locate and fetch 
Fenfire
-data block from the Peer-to-Peer network, where given date and/or time range 
is given.
+There are three research problems discussed in this thesis. First research 
problem
+is to find the most efficient way to locate and fetch Fenfire data blocks from 
a 
+Peer-to-Peer network, where the block's identifier is given. Second, we want
+to find the most efficient way to locate and fetch the most recent Fenfire 
data block from a
+Peer-to-Peer network referred by a pointer block. The third problem
+is otherwise the same as the second problem, except we want to locate and 
fetch the Fenfire
+data block, where date and or time range is given.
 
-This thesis is structured as follows. In next chapter, we give an overview of
+This thesis is structured as follows. In the next chapter, we give an overview 
of
 existing Peer-to-Peer approaches, algorithms and key differences between them. 
In chapter 3, we
 address open problems in Peer-to-Peer domain and divide problems into three
 sub-categories. Chapter 4 gives an overview of Fenfire system. In chapter
 5, we evaluate existing Peer-to-Peer approaches with regard to Fenfire system. 
-Finally, in chapter 6 we present conclusions and future work.
+Finally, in chapter 6 we conclusions and future work.
 
 
 \chapter{Peer-to-Peer architectures}