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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:. y& q# R5 X1 s
to do-business 2 Z8 @* A" w; l. O
rt random 3602 F0 ^2 m1 |2 T$ S( n% q7 j
fd 1
% D3 @! ]; B4 w" O: r6 y ifelse(other turtles-here != nobody)[' O  L* ?5 \" a+ O/ p! H- P! Z- e
   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.
6 |4 {9 v! O( c   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
) ]4 a" O0 Q7 n7 Q   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer( V+ k' C  U3 b  K$ X
   set [trade-record-one-len] of self length [trade-record-one] of self
$ T9 W' J, `( n   set trade-record-current( list (timer) (random money-upper-limit))5 }: c3 b7 V. z7 Z* i
; D! J3 s/ x! @5 t4 i; X
问题的提示如下:' K( I% d" k1 `* H% S

; Z/ O: u4 p1 P: ?. r* Berror while turtle 50 running OF in procedure DO-BUSINESS) e, n$ x4 }4 K
  called by procedure GO: t1 F0 X1 K: e% _9 A+ ?
OF expected input to be a turtle agentset or turtle but got NOBODY instead.8 }2 ?3 C; O/ n& S
(halted running of go)9 _0 r( D- l+ a$ S- e) x2 d+ w" w

# g% h" b: w9 C5 ^7 B这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~) _0 B: i4 F/ y3 L! f$ j: E2 N
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教
* x4 c+ m- c: {! nglobals[
( t& y$ h6 g# L" r$ g/ l$ K5 Ixmax5 ?5 g3 Z% s$ ~) R" }
ymax
1 g' i* @* Y% w" l0 c2 sglobal-reputation-list) i7 ]$ g  I5 I8 Q  |$ u; G/ w
6 L& i2 r; D5 \  Q; \/ A
;;
每一个turtle的全局声誉都存在此LIST
. I& g1 x5 Z# k. g& t, }! C. Kcredibility-list
; q6 L; G( y, }% K, W;;
每一个turtle的评价可信度
. Y  X) u$ M0 e) |1 n  }' ^honest-service5 ^1 W0 Z  {! Q* x8 ?( t
unhonest-service
0 }+ p/ H6 r8 z; q- I7 f8 w! L$ ^5 \oscillation( L2 s% u8 \( W& g
rand-dynamic6 F$ n! G  u  [: q
]) }9 F4 [9 J3 F6 W* T; `

' t0 y8 G5 [/ L9 H8 ]turtles-own[6 M2 ^: T/ j6 Z& _
trade-record-all
. {* ^2 |4 {# `;;a list of lists,
trade-record-one组成' ~; Q7 J: m# Y- _; p
trade-record-one
9 t0 S, K6 T/ ^$ X8 K# Z( W; b;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录6 u& ?' k; W1 m$ B8 V2 z; m- H

4 b  P$ k4 q7 `  t1 l; E7 e;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]. z+ l0 F( e0 f- V+ n
trade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]
1 z; g# m4 a/ R; o+ f; o0 \credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list
. v9 ~4 O6 C* Y& sneighbor-total( G$ O# h$ Z$ e' u& ?2 ^( {
;;
记录该turtle的邻居节点的数目( N$ M0 h6 c$ @2 V3 P1 \
trade-time
+ `' \3 _4 G* Q3 c& u;;
当前发生交易的turtle的交易时间
$ v; t/ ?! B& R; L, x2 r5 kappraise-give
4 p) |- b/ x) p- ];;
当前发生交易时给出的评价
( ^  ]3 I- z$ J- n1 Q! V0 A' l# @appraise-receive4 C0 D& t1 `' H6 a& r* }/ k. P
;;
当前发生交易时收到的评价) M9 ]+ m4 Y( L: a! c. v5 j( B
appraise-time# O: c: R' I! S. W" P- [  X0 H6 B
;;
当前发生交易时的评价时间7 o5 r/ I+ w5 O' U( k
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
# y+ x0 }" p+ h8 V2 d* p" Z' Etrade-times-total
1 U: E$ @7 {3 B/ i) f- ~* J0 D;;
与当前turtle的交易总次数! k9 u# m" S9 T& F9 M
trade-money-total
: ?  b! l8 B! j4 O) R2 z! C;;
与当前turtle的交易总金额
1 W0 w! V; v7 o  R* @$ _: M  p# olocal-reputation, t6 U& `; m; A% M
global-reputation
7 n( O( t4 _7 p6 e3 ocredibility
* T* r1 `* B+ ]3 U;;
评价可信度,每次交易后都需要更新
7 O1 _- @0 R! s1 M! fcredibility-all
7 R0 N- S) f3 s; n* M# t+ l;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据
1 p$ S9 t* g! k; j6 [) H( v2 D" [9 c8 ^: o/ t+ {* N& _& f- o  G
;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5
5 U* p) ]: _9 P8 [1 E/ Z, ?credibility-one% {0 F/ R% Y0 m- |2 X
;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people
! W0 T1 @' X+ s! H& Eglobal-proportion- t1 t) X% j: v
customer
9 C6 y8 K; j+ X7 z" l" \7 rcustomer-no. F/ F: \+ }) a& ]4 o
trust-ok
( Z( ?3 V3 K7 w" @' u; [trade-record-one-len;;trade-record-one的长度% N: [% C& n  L/ T; u3 O# g* M: Y+ d
]
+ `) ^/ K  q+ s# }- X5 J
/ Q3 ?0 j- I. j7 n0 b$ g( x( I;;setup procedure
/ o4 A3 A) H; }: O& V3 M9 b1 @) S, O1 a3 Z& m
to setup
. ~" y& ?8 W. H# T
* x8 Y$ r5 ]& sca
* z& p) R" T4 o. _

$ j5 M* Y  m& }: E4 Jinitialize-settings
. }, U/ O( b2 r; ]& l
4 j3 k- S  J+ w; K! l
crt people [setup-turtles]

5 L  f) ~& u9 ]* ^0 ^; d& W
2 r6 i. d3 n0 F+ P! l$ Wreset-timer
' l. o0 {0 [0 F0 U& O# n

9 K' M. ^1 `! G. u* Ipoll-class

3 |  u  A' b: k+ Z" l- U$ t9 O8 b+ ^  k2 N$ r. p
setup-plots

% k. w# {+ ~5 _$ B: k
9 O: I# U9 a# Bdo-plots

, D1 B! o) W+ |, {end1 _( t3 v  R& N: J
4 x3 E& Z0 M) M
to initialize-settings
* j. a4 i/ ?- L/ l
1 X8 e; t* M9 w( K/ I) d" r: Lset global-reputation-list []

" t$ J+ r9 ~; N# l* Z! P' D1 b) F3 P% ?4 Y! O+ G
set credibility-list n-values people [0.5]
6 x! y+ V$ ]3 n4 s) U" Z6 l

4 `( t4 X+ |' aset honest-service 0
$ a; C0 G1 k$ T

5 c# U! x+ h+ c2 O' x6 u" Kset unhonest-service 0

  M3 X" a6 v( E; q9 K
- R6 x) j, x, Iset oscillation 0
. \( A8 ^* `) O9 S* v

4 Z. h  l; l$ n" e, A% \' r- ]set rand-dynamic 0

5 W1 m5 k0 b. m" K" q9 @* cend9 d! ^4 e0 x- P4 z

' }' M. d6 c: e: H; F5 x3 Sto setup-turtles : p# ?) N2 U) U5 p
set shape "person"
& m( L! o/ X* O' [setxy random-xcor random-ycor
+ C8 N- p, G7 F: _' Z* ~! _! nset trade-record-one []
* k) d& A( G; k0 ?/ U/ ?

5 d8 P; @. _9 |/ I/ a2 v3 Qset trade-record-all n-values people [(list (? + 1) 0 0)] % C( i9 j3 Q( ^$ u* ]* Q

4 o" `$ I4 o, a, Rset trade-record-current []0 C! I6 g: w3 C' c6 F. y0 t
set credibility-receive []
/ m8 U  K4 }" l1 V  r& L! lset local-reputation 0.5
( q$ w7 n2 f) K, S& C. Y1 b) fset neighbor-total 0
2 O) i1 u, ?$ `2 r, Bset trade-times-total 0
/ M  [4 [6 I3 w+ B  nset trade-money-total 0
' \  Z6 s. l+ B4 W+ T" q4 nset customer nobody8 ^* D6 z9 |* O5 T) ]9 w
set credibility-all n-values people [creat-credibility]8 ?! L0 `2 x& F2 h
set credibility n-values people [-1]
0 p7 m% z6 C: e- R5 m# ]get-color6 U8 K; a& P6 q! T+ ~

8 l7 ]0 [9 ~2 t8 tend
2 M/ u8 r; p3 x. k+ o0 v. Q
3 M! U/ H7 ^* Y, p9 L5 G+ l8 {- Bto-report creat-credibility
* }8 Q, u& y/ n2 u) `8 Xreport n-values people [0.5]& v# o) h7 N. G" p1 C( A
end
, p* \4 J1 z# J* _8 j8 L  I& j. @' }- ]$ i
to setup-plots
+ ]6 Q* h) j: _
- z8 b, r; f( Q6 u) J1 lset xmax 30
" O: g/ k  W" i' e; [8 i
! ]5 Y& k! j7 j: D! j8 a+ w  c: P
set ymax 1.0

% C$ ~3 Q0 T$ J7 ?$ f! q
' x/ U7 u; f* u, _clear-all-plots
! Z% i# M6 F" E# h' k& a5 v
' h9 V2 M5 q2 J$ L1 I$ f
setup-plot1
6 p( q- ]/ v  K2 h
) l: d; e+ ^0 o3 S* H; q( `/ f# m
setup-plot2

" `7 ~+ ]0 ?$ c6 L' l! o6 x. K/ L7 e/ u! i9 s9 R. o+ E
setup-plot3

6 j9 ~+ R9 |! g& B0 l: F+ h. ?end
1 I% L, x) \, v  D! Y
' A. z' j% o/ L;;run time procedures
/ Z/ m) \; [% ^5 L! e+ L
7 y, I$ w' G& k4 [5 z1 P1 B1 Oto go
2 e! m5 E" p9 G0 R
4 u8 E' q4 k8 N  X% |ask turtles [do-business]
  s1 w2 V- ~& g) t- m
end
* f% G: s, ?7 ]4 m0 K) N* O" {8 L. q/ z6 e( |
to do-business 8 D$ F; x- B$ T3 m! w% C

$ Q0 }- `6 h9 x6 O$ h( D2 L- k4 Q! d7 q
rt random 360
; R6 x4 A8 c/ {6 _  k; h- H
) N! _; L( S0 Z
fd 1
( V6 M3 K0 N( R

" I  a4 r/ l# W1 u! tifelse(other turtles-here != nobody)[
3 Y: x8 h$ b8 k2 h* U8 b
# T2 g  O" ~- B1 Z% D& J8 F
set customer one-of other turtles-here

( Y* ^% V. Q# l; z* B2 k& ~3 B  K, x2 D8 Y4 x! j+ v
;; set [customer] of customer myself

  H7 O% I  E* e  F' m% b
* N$ a0 [. R9 ~; o1 s7 kset [trade-record-one] of self item (([who] of customer) - 1)
0 R. X" n! B: b# l[trade-record-all]of self1 f4 |' |) k5 ~
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

. w6 m% n: R( {2 h; M: p( [# O6 p' z/ p7 f8 N' R) ^
set [trade-record-one] of customer item (([who] of self) - 1)
4 ~: H. V" c) ~+ [0 O% V6 \: h[trade-record-all]of customer

5 {7 }5 d' x% j1 K7 X" q( X. U. E: c1 o
set [trade-record-one-len] of self length [trade-record-one] of self
/ P& W5 C, f+ n+ m
2 P) \2 x# W, t: Y! |9 m, z1 l
set trade-record-current( list (timer) (random money-upper-limit))

! F9 _% U, M0 n3 K# N
& G! o" n. ?) c! r% M- Cask self [do-trust]
5 j% o  r: N% m;;
先求ij的信任度
; u4 R, r0 N( H& T3 f; h/ ]1 C+ T; R
if ([trust-ok] of self)7 ^9 w+ r2 a+ y. |, I
;;
根据ij的信任度来决定是否与j进行交易[0 I8 ^: V: H6 q' n/ X! D. P. H/ b4 X
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself" Z) h. r7 k, t
7 S' ^/ x6 U" O7 Y* T
[
" w$ R9 ~% k$ @' A: S

0 o/ J( c) g6 d/ l# j: F/ Ldo-trade

/ Z; m2 p  C8 K
8 z: s$ h, d0 b2 {; Wupdate-credibility-ijl

* P5 b$ O2 M5 E# u" F' W
5 O, v# S  s5 }/ vupdate-credibility-list, d3 [- a7 d$ m6 A) _) h) `( O  s7 v
, l5 Z/ ?) f  N' K' R) \. U
( V2 K& V( h4 c
update-global-reputation-list

( B& o$ ]1 K8 J# h9 x) @' A. c9 z. `/ X$ c: m( l5 Y) {) j; U) X" Y
poll-class

- g) M4 p5 ~# G- V$ J* C  W0 v4 B( _/ D9 R
get-color
! j' |  }7 y7 c( V

5 z& o, B# r' j! x( e]]
, A( x) R% F: ]' S( j4 K; q5 ?  P) k' c% l/ H# r0 f, ~! i
;;
如果所得的信任度满足条件,则进行交易' u8 ~  [; _4 I( [# J

; Q7 F% \9 @& y! m( j[

- Z3 D5 X8 {5 I9 Q6 Y; z. E5 B# l- d
rt random 360
8 k) U, L0 @6 t& a

% Q, a) @: }7 dfd 1
2 F6 M! j7 B) b9 S' [. g

! y( }+ H% B8 m, H3 h) r/ X/ |& x]
: f9 l2 {& w6 V7 l

' y; Z- a% i; P1 g8 bend

5 L* v- A) q1 N5 H" K& `4 |8 }9 n+ P1 ]. P9 v* F* t1 o
to do-trust ) d. Y$ c1 A9 T  T
set trust-ok False: D' J9 [" t1 X; w, q
+ q9 d7 S" S8 s* ~# n1 P

+ x$ u2 Y. X& n7 ?( Plet max-trade-times 0
' h" N$ k  \& N5 _% x! T! Mforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
1 [/ H; g1 o) [let max-trade-money 0  y& a# K) [0 Y: W2 V
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
* Q& m: |  U# J* K# s: }+ slet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
  s4 L% Q3 P1 K( ^; q& V  C6 o+ j9 a' p5 d- z- W% {. X. E) t
7 {7 V, S) S3 r  g8 D% D
get-global-proportion" Q# t; I) ^+ v
let trust-value
( w" C, D8 c  Q0 c* ]1 G9 ^& Klocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
9 g* T* _! ^7 |
if(trust-value > trade-trust-value)
: q! s: ^  I  j$ Z/ K[set trust-ok true]2 I. L7 ]) q' F8 O& ^  C! E6 ?5 A
end# R+ Q3 `2 h$ [/ [
/ E5 T$ M+ [9 {  e
to get-global-proportion) k' m: N- _2 S$ v8 f3 ]6 M
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)  X3 U6 s% D3 M( x. d
[set global-proportion 0]
* g% ^. ^0 X) a/ L[let i 0
! ]( F& R" _( e5 o6 F4 H- jlet sum-money 0
% H1 E$ \6 r# bwhile[ i < people]) S& e9 w! t9 {" U( l
[
4 M- t% q& M* g) |' r5 hif( length (item i! p/ o* H6 A0 W/ s
[trade-record-all] of customer) > 3 )
: v( {4 f0 |+ H; [' N
[3 A* s  F) M" k
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
+ [& n; d1 J! o$ U]% }- H; w5 B! i/ M1 v
]
( Q! c) c! E$ I* nlet j 0! N4 }8 t0 @  Q7 g
let note 0
" [" R, B3 u: ~% t% Z( Vwhile[ j < people]! I; ?& u4 \6 ~( k8 y
[' j+ Z" Y! |6 k5 b& h. ?. R! ?
if( length (item i
1 I  b; A' {' V" O+ z3 s[trade-record-all] of customer) > 3 )
. ~. h. P4 E6 |; P! @
[
1 t* C- m( E2 A2 n! Iifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
% E/ E7 n: L0 |8 _[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
# |$ P6 f. h9 [( V[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
; W* M% a2 {: l& z! y) q]
2 |: y- N) m+ M/ B" c% z]' \8 M) U( |1 o& R# @% A0 x8 U2 h
set global-proportion note- a" ?. |+ A) t( `& a# X
]# V) r& j, V# a, D6 E) J4 p
end
8 O3 Z8 Q1 `* A$ D2 ^# P5 \" a8 m; @; f. i' `
to do-trade6 `9 k+ j0 h8 S7 s( b
;;
这个过程实际上是给双方作出评价的过程* o! ~/ F; Z' x
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
( x5 e1 z# |& ^" Z: P. [set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
) \4 X$ t( [$ Gset trade-record-current lput(timer) trade-record-current
9 c/ P, m; c0 [;;
评价时间1 j  X( c9 b$ k5 h" t
ask myself [
' @$ S* O9 M( ?5 zupdate-local-reputation
; j( I- h8 C# ~) T3 g4 W! Cset trade-record-current lput([local-reputation] of myself) trade-record-current; R, k, b8 I' ]! e
]
& f% f3 N+ F) A2 [& a3 h5 H  |& Vset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
0 P! N- T  f; j! O( y7 ]& |6 w;;
将此次交易的记录加入到trade-record-one8 l3 Q5 e' X6 I% c6 N  _9 [
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
! ~, @0 D4 u8 N  B2 Tlet note (item 2 trade-record-current ). Q5 _1 F; y3 O- w& a* ]4 e2 \6 ]. M0 L
set trade-record-current- ?: u+ f! x" d1 u
(replace-item 2 trade-record-current (item 3 trade-record-current))

+ V2 R5 M$ I+ c; N5 rset trade-record-current
. w' w& ^" u7 u2 `(replace-item 3 trade-record-current note)
. T: _* E& E) C& ~
, g3 |. N  _  i# K+ j: S
0 e" d, S( a% n. h7 j
ask customer [% m4 `8 ~! Z2 ~/ X# K; A
update-local-reputation
7 ^1 d- y3 c0 W* k  wset trade-record-current4 p) D: S8 \& f# Q" r' x& [! S8 C
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

1 \4 P+ W, S* L: |* F]
& l4 W3 g& ^$ t( ~+ ?2 C
4 T) U8 m! p( W4 w4 b! x8 `
# _, z; F& J) q% W+ g3 s- Q
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
0 W2 U3 p" v( o% ^* L/ M

, }7 z+ X& [/ H5 w* Jset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))+ k, m" X2 o- N1 A2 M- |
;;
将此次交易的记录加入到customertrade-record-all1 i* Q+ V* a5 A. p" O  x! h
end) c6 d+ f% g8 }+ x
* w- Z) y; e& g7 P6 F2 a$ _& [$ o
to update-local-reputation9 }/ l& ]) M/ e- n; {
set [trade-record-one-len] of myself length [trade-record-one] of myself
% Q) {! V$ U) H- A3 p5 ^  A% D5 S$ ?3 b5 E7 \, i
& f9 \6 s8 v; g! E6 R
;;if [trade-record-one-len] of myself > 3
( p1 z" C9 M: z- F- w
update-neighbor-total
1 G! s* h& T3 C" y( w;;
更新邻居节点的数目,在此进行$ d0 o7 u& |/ {/ V+ H: j* ^
let i 33 }6 k$ e/ j' T! j$ i; _) w
let sum-time 0
9 H* U/ n/ q: n7 Q/ Kwhile[i < [trade-record-one-len] of myself]
' N% w2 U" x" l7 n5 I. \7 O  \[
& V- ~' F  B2 i" d# Uset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )- o* p* B- I' @2 b5 A( x/ w. _
set i
, i$ b5 j( }  x; P8 Q+ Y- v( i + 1)
5 N# E( @. q- ]/ _7 M6 ]  C
]
! r( L9 F6 Z7 g; Llet j 37 |' Y* Z5 h8 g9 x; i( ]/ C- W
let sum-money 0) H6 G0 B, J! C+ ?, l% [
while[j < [trade-record-one-len] of myself]3 `2 d6 |# G# P: K* j  Q- _
[
& T% x+ L" m/ v, i9 z5 Xset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
! o& z* C, h4 l% S2 p. X9 g' Nset j
1 x% v4 X) i7 X( j + 1)

" `  ^: H) b3 g. L]
, N6 q8 p, H, N! glet k 3
. n* m# R% D# }# k, U0 g7 Ilet power 0
: C/ D: J' z4 u2 ?2 clet local 0
) a' l9 k$ S" \( T* S) D3 C3 O2 Xwhile [k <[trade-record-one-len] of myself]
8 l( a6 N& ]% O0 c% u[0 [& z3 w. m8 g; q
set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money) & g+ Q" y: n' \3 N1 J! ?+ c
set k (k + 1)
1 W8 t9 A8 i- y* g* Z. T$ v]
# ~& p$ Z  e4 q4 s( O) m7 K5 V5 dset [local-reputation] of myself (local)
. _6 d6 J7 X5 W" Y$ y# ^end; t, V7 j% D! `5 G  `, F1 j
* l+ ^' C, A4 K" O; l. m
to update-neighbor-total0 c# ^# |( J; U* k
: r% b0 m6 }$ ^% v& i! C' t8 F* b
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
# j3 R1 D" v/ C& [
4 @* `6 w$ [$ j- j/ ~4 U- f) Z

( z" W! ?1 l1 g% B1 Wend
( i% r/ u+ C: }2 a9 G/ g5 A  Y6 J: Y8 X, b3 l
to update-credibility-ijl 5 y+ r; E- S: B- E0 t6 W

6 I; g4 W0 w% X" T- d;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。. |+ X2 z& d$ S3 ?! L. |9 \* ?8 T( I
let l 0% m2 I/ H0 e% [7 M; \
while[ l < people ]0 W+ u  _2 c* L' z. h
;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价7 O8 A4 ]# ?7 |2 y
[
- G* P; Q& N3 U! d. I! J8 jlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
5 A9 R, X4 ^* z0 o% e4 Q( O" Yif (trade-record-one-j-l-len > 3)' {7 S  V" j1 X+ A5 m
[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one
9 r2 J& z0 U- j8 T9 T& Klet i 39 T  ~1 r0 S2 p- l9 e' V7 x
let sum-time 0
' p/ z1 x7 u. ~9 X: z5 R) h' Cwhile[i < trade-record-one-len]5 \7 _6 ]( {, {% C& c2 F7 m1 [
[
" Z; O3 G0 P: ]set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )/ J. j* J2 R9 e; s5 |& q+ ?. J
set i
$ H' k; @0 ]. k0 ]' Q( i + 1)

) ^) X  s6 t- v; D2 x2 Z; {]& P7 U: @% x) B: ]6 a# w
let credibility-i-j-l 02 R& n. H: f% g8 C6 ^
;;i
评价(jjl的评价)
& z& C' Q" }+ R( [- ]2 Q. x$ T2 i/ |let j 3
( T+ [) O7 `0 _7 V8 `let k 4
8 O& r. d$ O& j6 f( iwhile[j < trade-record-one-len]
) T/ z6 _4 o; t- S[) ^9 c7 b3 M$ o. C9 N
while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉
' B; A! I0 H/ Q8 K$ zset credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)
% u/ d% R  ]- zset j
4 X% O# b; t8 u$ w+ y# `( j + 1)
  v4 Z2 F; P8 i( g+ N- P
]8 Y3 F; C# n0 x* S8 P
set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))
- f) m: r! ?5 c" l3 |4 a& B3 t; z" n( z9 [* q
$ J1 E1 V+ m6 ]% u3 N
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
9 p! I' L/ W! w- z+ C& \;;
及时更新il的评价质量的评价
" K4 @5 ?' E2 g4 Dset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
1 q0 t% @* b+ E: E% `& @/ ~set l (l + 1)
5 E3 E  F% N0 [' G, Y+ I* T  M]
1 e" W% l) O* E9 z+ Gend. ]" z1 |8 ?: Z3 ~3 C8 _' q
+ |9 e! L' g1 o2 B
to update-credibility-list
7 S9 a- c. j8 L& N) Hlet i 0
1 h. ~: D) U; W  Kwhile[i < people]
! O( t  ]: a! X) U& z& {[4 T" T7 T1 y* ?5 V
let j 0
  T7 c0 `6 X* Nlet note 0
7 N, K5 y6 w, K& K7 w0 wlet k 0
9 J5 O3 Z3 |  p& ?- C) \;;
计作出过评价的邻居节点的数目# X1 h) L+ p' T3 v% i& B
while[j < people]
, m9 L# o$ F: u+ X[1 v" v& M5 j. d% v. q* A
if (item j( [credibility] of turtle (i + 1)) != -1)
& D0 ~5 M* W6 O; Z, M) p' k;;
判断是否给本turtle的评价质量做出过评价的节点
5 ^$ U# H- j/ ?, n8 D2 j' w0 z; y[set note (note + item j ([credibility]of turtle (i + 1)))8 s2 Z2 J8 D! H0 {/ U; r7 [' x
;;*(exp (-(people - 2)))/(people - 2))]

4 D) ^/ Z8 C5 M5 f% wset k (k + 1)4 K9 B7 {2 p$ H4 F4 S+ a. f
]
9 L8 b" [( o; {: Q5 f# X2 c9 s( Wset j (j + 1)
/ ]! f4 f  A* N  |) _/ T7 q' O]
$ ?: r" Q( |0 Q- T7 ~6 F5 mset note (note *(exp (- (1 / k)))/ k). t  \+ Z1 z! F1 c* [) ~
set credibility-list (replace-item i credibility-list note)
+ f  [' e: u7 a& sset i (i + 1)* z5 i% P& C! n6 H5 r
]* w, ?& L3 q% e
end
# H. l4 w2 ]( z3 d9 a# ]  H* @- x' @$ x$ [, g( {  r
to update-global-reputation-list- O8 Z2 u  g. L& `" n  C
let j 0+ x9 C1 a4 k6 f. z
while[j < people]/ v7 F! m% f& R2 J! q; V9 {
[5 E- F$ R% @% l8 Y4 p7 W3 O
let new 0
( E% N( {4 Q; j' r: f2 @;;
暂存新的一个全局声誉  ~" C: t+ T. Z  L- _, i
let i 0
  a" C2 t+ e) x3 Q! }+ \let sum-money 04 M# o# Z# G1 K, K
let credibility-money 0
) Y+ E5 @! z& Y7 l) T5 t4 {while [i < people]
, }1 J# k8 Y9 P3 Q& a: q* n# I+ d[% v/ i2 }7 l! G
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
; s5 ]: x- I; n: F9 Oset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
( [) q- g* [; b) v: m4 _set i (i + 1)3 b% o, ]  s5 t+ y) m
]0 H5 V& h! w! u4 z
let k 0
6 _: V, s5 J: s$ o( U; P; jlet new1 0" [/ _- v- x- g7 @5 p/ i. k
while [k < people], v* `& Q0 R. {- n  |+ @
[* N3 P! j; U+ c! g0 `4 ]" `1 N
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)
& H7 h: c( [6 i7 D0 ~! eset k (k + 1)
. W' d( }& H7 R]$ M7 B3 y: M, X" x
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
/ P- V* @6 D) s$ m4 Gset global-reputation-list (replace-item j global-reputation-list new)
0 e$ C; l4 ], o; s9 [set j (j + 1); P% ?& {4 y5 x3 |: g& T  W, q
]
7 d# G5 x' M3 n' g8 b6 Zend
# k, Q7 v% C) A- H# B+ w
) @9 v$ V1 w" V/ y1 ]2 G- A5 L6 O4 y) J6 _
4 N; M  ~( ^) b7 j5 o
to get-color
6 {! f, m% G* Q1 i8 ~% [  t6 E! I% h2 f+ i( t+ i0 D
set color blue

8 [: C* _5 m$ Q9 r; a/ Pend3 u' [+ n; g' p. o  k. Q

! b+ n. E5 r! L/ [; H& a8 _6 vto poll-class
4 Z! }9 m7 E1 V! W' H* H1 bend& N) b$ E/ p4 w( s
  |, H/ H! }; S/ y% n' x1 G
to setup-plot1
  G9 r4 j# R' X8 B9 N# X* ?$ t" [4 q. N8 p' n
set-current-plot "Trends-of-Local-reputation"
, r7 \1 E: V) w% O9 ~

! B% k4 p! ]: C) Kset-plot-x-range 0 xmax

- W+ y' d/ {" `9 b/ l3 Z) \' v- ~- q8 M0 |/ ^
set-plot-y-range 0.0 ymax
+ n6 |2 n, J7 J% A7 @
end
6 G0 f- @, G( _+ c2 u# Z4 a; L8 ]# N: W  b! @. n
to setup-plot2
6 F$ V2 Y8 u4 J- r5 R! S+ p6 D
. R4 F* w$ Q( |  J: {( Pset-current-plot "Trends-of-global-reputation"

4 F9 M( q; O% ]6 P! w% v+ Y' J% V
, a+ C) F) v3 D8 k2 m0 j0 l7 D! t8 ^set-plot-x-range 0 xmax

# O' B, |' {/ g( r) E5 {- C9 t' U- r1 y) N# A  D& A: J
set-plot-y-range 0.0 ymax
$ \" n% T) U; y0 a  E, f
end
/ I7 J, O  }) B! V/ \: p/ y; @& K: ?% O5 v2 c" ]9 t
to setup-plot34 q  x0 D0 q  c

8 O: J' _7 N: f" a, Lset-current-plot "Trends-of-credibility"

) ?* d! t! L5 [5 a+ _. A* Z# F+ d+ f$ ~) i
set-plot-x-range 0 xmax
' ^$ C1 H# _7 r( [5 u/ c
' b7 `9 ~; d* g. j
set-plot-y-range 0.0 ymax

& E8 C" W" j- J% }% gend
# B% `% _, _- _' ]3 n0 J0 x% j. x
5 m/ b" H8 h$ W0 Lto do-plots1 @8 w) w. ~5 o9 C5 q5 U% i
set-current-plot "Trends-of-Local-reputation"7 W. V4 E  b% N1 T
set-current-plot-pen "Honest service", z4 u# Q' N% Z+ K1 d* Z( s
end
: d! Z' b# j: r% J
* u3 a4 N7 [9 X- S0 @+ N[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.
+ b/ c7 ^7 g* y4 i* e1 N5 {0 Y* W2 {7 `
这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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