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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:
8 Y& D7 f* y5 l/ Z) kto do-business 1 L7 U+ h, C3 U# t
rt random 360
5 Q; M, e0 ?$ Q# n fd 12 @5 T4 n0 Y. }! @% k0 A
ifelse(other turtles-here != nobody)[" s9 ^- F( `5 n) ?- g
   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.
1 j$ V) s, @) g4 P' U& b# \   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
1 d" {# U" S6 n  n8 m# p0 Q8 ^   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
. x, R' E: a1 j4 I# G1 _! i   set [trade-record-one-len] of self length [trade-record-one] of self
2 h& Y' U3 I& z8 i   set trade-record-current( list (timer) (random money-upper-limit))
, Y& w* t7 |" U3 P) `5 A" T) Z3 `
. N% R# e4 `  v问题的提示如下:' ]& r& n3 _" Z- s% Q3 d

# `+ A  ~& Y; n  B1 ?error while turtle 50 running OF in procedure DO-BUSINESS
6 u4 B8 R  a' A; ^& `% x4 }  @: O  called by procedure GO% l0 l) r' x& ^! [2 |
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
7 |4 _1 b$ e% G; Z# a% G
(halted running of go)% U! W/ n: \& ^5 g" d& ^/ _

! S$ U4 {* K3 Z, h& t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~~' Z! c% J9 k8 v8 I5 e( g) Z) _% C
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$ I9 c* m; ?8 c3 a0 q
globals[9 v- q+ w7 A7 ^5 z4 f, }$ A
xmax5 R5 [, l, C6 M8 N  e
ymax
3 Y: P* Q: ~* M. N; `% nglobal-reputation-list/ P: K6 b2 R, H

+ P: }+ m; `" ], z9 H' K  i;;
每一个turtle的全局声誉都存在此LIST2 ?& s/ k+ s7 F: s/ ]
credibility-list6 I1 N, k7 O: x
;;
每一个turtle的评价可信度
! t" o1 ^/ p  [honest-service
2 s4 X6 Q; [: A  A1 ounhonest-service+ [% e/ r/ P$ G( K6 }4 u. R' s
oscillation
) Z$ {; Z) q( I) i' ?* Rrand-dynamic% d& M- V( |, f  b
]0 |2 K; P! o0 Y& S) K
  m( M5 A1 A9 p
turtles-own[! X% h* K* ]+ s6 @& H* x
trade-record-all/ T$ r8 I4 T9 h) U% S0 f) l
;;a list of lists,
trade-record-one组成: o0 k# G" Z  ~/ K
trade-record-one& A/ Z/ E% E+ J" v$ B) E5 w
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
" q+ f; l/ y0 H1 p0 T2 t! o; F* H6 {+ r6 R: \; B8 Y$ x% y" f
;;[
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]]6 z% A8 J. a+ l- R7 ?9 O' F
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]
% \8 Y8 d! f$ E, J0 D. A$ Bcredibility-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
- U$ ]6 Y( O- j9 r" r' Cneighbor-total9 _  v& N) Q! t& z- ?1 B7 G/ e! n" d
;;
记录该turtle的邻居节点的数目
  O, T5 R+ M# s, E3 Atrade-time
- E( T5 z+ v( Z" M: I0 ?4 ]9 R; b;;
当前发生交易的turtle的交易时间" D5 V: f( p4 \; N2 x" a9 _1 x: ]/ P
appraise-give9 }$ H. b+ N# c0 `
;;
当前发生交易时给出的评价* T) L1 a4 J, Y% N/ x9 m, E5 f: u3 M
appraise-receive8 L! z) {4 o! n4 e7 k" C' n
;;
当前发生交易时收到的评价
, x4 D" s& Z, s& j- oappraise-time
1 L( P! f) y2 h' s5 }; L;;
当前发生交易时的评价时间
  w" ^! A/ x. E" K2 alocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
% K  u5 H' v6 l4 @6 btrade-times-total, Z6 T3 q% g6 _4 d8 y3 s0 z
;;
与当前turtle的交易总次数) ^% l* C1 J( j
trade-money-total' b8 x1 q  K8 A0 C" m3 c- D
;;
与当前turtle的交易总金额
  u" k9 X- D1 X4 zlocal-reputation; o: A4 k6 _) ~
global-reputation
: U% b& b2 T  ^) pcredibility
  }2 y5 @' Q4 \6 x: b- @;;
评价可信度,每次交易后都需要更新# v, n6 H& Q1 a4 N! `
credibility-all2 M3 G7 ^% }6 Q
;;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
/ G* G9 G2 }# `# M" n5 `2 n, c" m5 j1 d9 `! K( g* I
;;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* J! g  C0 ~! w$ b" J0 }
credibility-one
9 h. F& E2 d0 ?$ _5 k;;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
% o/ v; y; n. `4 ~8 ?% M/ v% sglobal-proportion
, }+ M$ L+ C: I5 X3 ?+ T# b5 ~/ Ocustomer
7 S1 E( G& m5 v4 Z; Jcustomer-no
  s" s3 _4 T- F4 j+ Dtrust-ok0 h$ S/ I0 M% y5 T% K5 ?+ W
trade-record-one-len;;trade-record-one的长度
; A3 l1 {5 Z  r4 S9 q; @]
) _$ j& j1 I- u. X$ e1 s( D) T
& U4 F6 P( \# p" c;;setup procedure! y9 {. B1 _3 \# K/ D" I
4 \' i8 a' U, S& j
to setup9 X) Z3 @) I! w

9 V  p1 D  [/ D4 d& Ica
+ K8 @% _0 ]$ k9 z- `
" Q/ s, s  G1 S2 N
initialize-settings

; R' s9 T* a, l! Q1 p3 t
8 U; I: t. h5 S+ u7 M  icrt people [setup-turtles]
% h$ U; ~5 Y$ D  {% D' l
0 c6 A1 i2 G: m6 `2 _
reset-timer

$ ~- u- v$ L. ]3 d
: f' E/ N) [6 Y# T; {+ I' r; F/ fpoll-class
: }: i' _$ g; Q" [+ A! u& c
8 Q3 X1 f) Q! I2 l" Y
setup-plots

/ b4 R) O+ W9 [2 t: U$ P5 L9 I0 D
2 k! Q5 q7 g; v/ `do-plots

, v- O* J& u  Wend% [2 Z9 L. O+ Z$ d8 Z  }/ o

, y* o* B# i3 z3 s4 F" W" b9 ito initialize-settings8 y* ^; r9 `2 g1 q/ U1 I2 a

0 w- Z  `& m1 J. Eset global-reputation-list []

7 }. f0 f% J8 ~+ W% N$ ?) O& ?: b6 _- k+ b9 r* B
set credibility-list n-values people [0.5]

3 W' W' B! K; q' e
* I% z# b* c7 Z  p- @; m% Bset honest-service 0
6 P; E2 m! R0 J- n4 @/ Y, ~
' v2 v2 P& [" v' L$ _- i9 w+ C
set unhonest-service 0

4 g4 ?) a# J, p, {2 C# y. B$ g! |+ u7 q' W' t1 D: O
set oscillation 0

: c2 R) t# V7 b6 L
% ^- X4 F0 W5 k9 Eset rand-dynamic 0
2 j0 n5 c2 P# C, a3 C* a
end
. r0 q( B1 q; E/ R  A
2 [, w- z& z; ], Lto setup-turtles
2 R& n$ A; I/ W+ H( j0 d$ b' I/ B7 Jset shape "person"$ X5 T2 X0 l8 J) S& n, R8 w( g" e
setxy random-xcor random-ycor
0 j6 u% V1 u, Yset trade-record-one []/ m& l0 Q( k7 _/ s# S, P. P
9 ^* s# j5 G3 M6 |" H& p3 d
set trade-record-all n-values people [(list (? + 1) 0 0)]
* J, {3 b  c% N/ B4 ~) I
2 i6 A8 a6 ?3 H% P- P
set trade-record-current []; g; j3 `* k$ [! X- j( s
set credibility-receive []5 D4 _) ^, J) }: j; P, i: z
set local-reputation 0.5
+ y2 D& d$ G' E- d7 bset neighbor-total 0
5 t: n8 U+ Z! q, f* g5 Uset trade-times-total 0
$ a+ T& @+ S; bset trade-money-total 0" s% [* V% t- T# o5 L
set customer nobody2 S# {  y  [0 U" e" X: z
set credibility-all n-values people [creat-credibility]2 n" a/ Y; v+ `8 t8 @' H, k, _, K+ p' f
set credibility n-values people [-1]
" ~+ t0 D" H$ L$ J( i! Vget-color/ V' ]7 a/ |/ V

* E- r/ I1 _( {8 r  z. Q' Lend' [* Y1 @5 \5 w! d" |" Q

! b3 w% k6 q1 J2 `2 U4 _2 n" Lto-report creat-credibility/ s  P4 P3 O0 l* H* j) @
report n-values people [0.5]
( N% z+ J" `# R; ^# C. m* `end
' B& |$ h; \7 R2 f6 c$ p% c' K! O9 O  n2 F
to setup-plots
$ `$ u" a' ~, u- ?) @3 `( W% l# [" z- U+ Y% D
set xmax 30

6 M; Q! ]# T# n9 ]9 L2 {; _# e7 U  ^  @& S! g
set ymax 1.0
9 [" `( V+ N; b2 {: d# B) \

9 R$ a$ ~0 k0 Q6 d% Uclear-all-plots

( C' A0 Q  Y# V5 i5 G  c) l1 \0 s' z/ G% o
setup-plot1

! ]) T/ }0 n1 V: |* I3 [
9 o( e8 G* a: i0 s/ Tsetup-plot2
& `; a; ?% Y4 k' b

7 }' u" C3 L+ I" o1 fsetup-plot3

: V% ^6 z7 {1 {5 qend! ~" r: x% |' {- S( P
& Z! ]6 G9 H% Y& X, K
;;run time procedures& z8 z4 Y+ r9 {3 k3 j7 w0 ~
9 R2 x: I( d! B2 s8 [1 t/ H
to go
7 [0 g/ ]( C3 a( C' k8 B
6 l+ u* z* [0 I+ |' Dask turtles [do-business]
% |" u& i8 \0 |0 g) e
end: D  g  T2 u' D) g2 l7 s

9 C! K+ G' q5 `% f$ Q, X" fto do-business
( R" d" q; o- Z7 a0 t

# L  q' G0 O6 f! @4 f! I/ z  e2 ^- S6 }
rt random 360

0 l  y- N0 P5 B) C, I1 S8 i+ q. F
6 o5 R8 C, O6 c3 r- T7 x7 }5 Jfd 1

) v/ x4 |; D$ z+ ^
, ~% I. G8 O( h1 @$ O4 y( gifelse(other turtles-here != nobody)[
4 Y( Y- c& D" v; [- c# r

2 l5 L- i6 ]0 z0 W* iset customer one-of other turtles-here
# V0 c1 g- c! i( s4 B- L, v6 D

; E3 C, r6 {0 C# G;; set [customer] of customer myself

/ N2 X4 s- r/ I/ B6 T& i
0 ~$ @* z; |; S/ vset [trade-record-one] of self item (([who] of customer) - 1)% l% ^# L0 N' w, w' w& w$ u% F( @
[trade-record-all]of self
8 B  N) X% b" b. h$ C: @& O  z;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
: |$ ~5 C9 w* z. W/ z
% e, ?) U; s# s+ m5 t( v
set [trade-record-one] of customer item (([who] of self) - 1)2 h* W. C' L6 J: \( Q7 f
[trade-record-all]of customer

/ L9 j6 M; I4 o% n* |( S9 E, T: Y% C- D& R0 o3 ]8 m$ `
set [trade-record-one-len] of self length [trade-record-one] of self
& f' V+ ?( n2 h
4 K, k6 a0 K1 f
set trade-record-current( list (timer) (random money-upper-limit))
( B' Z+ k2 H; [3 j! O2 P
; D- O- W1 `! ?) b* U
ask self [do-trust]" v- V7 n* g2 ?
;;
先求ij的信任度% s( E( K$ _& v9 Z8 y( O/ D6 k
$ H) h2 K( r% T- P( d; q; n
if ([trust-ok] of self); u3 K2 W8 I: |) f
;;
根据ij的信任度来决定是否与j进行交易[4 _( q. O5 w  w" x
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
- @2 F8 q; m" {  E; V1 d1 x/ T7 }/ k. i1 p+ Z; E! [0 @/ j4 N9 B
[

8 J+ a! i7 C, I3 F; B$ a( V' O2 p% ?: W# T& P4 ?3 U) n  }$ I
do-trade

+ }$ k6 w& r/ t/ p3 s3 D7 b2 y8 w) Q" S: j; [  n3 h5 b7 j% }
update-credibility-ijl
# `: V7 p! K0 u

. M; n( V) J; W4 J  dupdate-credibility-list" S. O- g+ x: O% r1 f8 l
) r$ o, N, p+ R: l% l3 j

& A3 E/ r! E; R9 `- X; fupdate-global-reputation-list

4 W. y% k7 }7 E" U5 z, v( z+ r
& ^) X# ^- O2 J  N7 {, b4 I: Cpoll-class

8 f7 s( u& [4 ]
- Z" _) M$ h3 I, a: hget-color

1 r, E4 V8 g3 L9 o, h# V0 ~2 p
5 [  G( U; Y% \/ l) N  }7 E' j]]  O( o7 ~. K9 l
0 ?" K" @+ ~) W8 O
;;
如果所得的信任度满足条件,则进行交易& S: w0 Q% w, O- a% w1 r* A

* x+ o" ~) L# j1 P4 h- C! O[
1 {* I8 N1 T, t3 N( |( o

, u& J8 p+ L- w, K9 t. srt random 360
1 _; i4 ]6 A) N1 t
( a" ?6 {2 o5 M, h" a$ h
fd 1
8 f9 G$ I, c; Q" E1 v
( T3 ?+ Y+ Z+ K: E
]
9 z! @' a% J4 d' }! ?$ q1 G
. |6 y. ^/ d& W0 p! k+ R  {  n
end

3 B7 b5 k  ]; H. @  Q
$ p9 @5 [! n% Xto do-trust , t( c* J* C' e. ?) e# M5 I
set trust-ok False
. Q) T4 P1 n) F# D- H
! S) D0 e( l* l5 b' z; T0 ?- v

5 F6 c5 ~1 y# Z& Q9 h) t' r" Zlet max-trade-times 0
9 T1 u6 A5 q" n6 `/ M& s4 ~  o* G/ uforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
- d" ?$ H. z+ T: i. ]; ilet max-trade-money 0
) v) o* H( m; q4 V9 [foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
* b0 w9 I7 G) p$ ?let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
# {4 L  q0 @2 X9 P' Z4 h4 X6 @2 f' |& B

5 Z9 {& M; c; c$ u; o2 ]% Iget-global-proportion2 L' m; R' r7 H6 o
let trust-value9 g  j: F1 [( ?9 L0 `- G4 k8 Z
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

6 V! Y' ~" ?  t% q/ t3 Vif(trust-value > trade-trust-value)& m0 f" s* s' U+ z/ ]  b$ W0 E
[set trust-ok true]9 c& Y+ L# Y/ F( g8 ]
end
0 r% p2 p. A+ L; e, w2 r8 V: A; Q2 v% N# [
to get-global-proportion
6 L5 R: Q. G- Z) }% A2 Y5 g7 qifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
/ o- k* C% X* s( Z2 i( L9 W( [: W[set global-proportion 0]
# X, |6 W+ S1 k5 F9 k, d' e[let i 0+ S; c- v4 h8 r3 j
let sum-money 0. }8 k: ~4 A. {) `
while[ i < people]1 E- f2 c" ^- y. ~: h9 X
[
! X3 o: V7 H6 R0 Zif( length (item i
4 G, _9 C- p# Q6 T, t! U+ _[trade-record-all] of customer) > 3 )
7 j# f% v/ a& N4 A3 h
[
+ l  H. d" |" J0 g% mset sum-money (sum-money + item 2(item i [trade-record-all] of myself)): F  N' f# c0 d
]
. h1 R; Z$ L7 K7 ^$ ^5 O, E. Y. ]- M]
# @7 g% _9 h# K7 W( J$ Nlet j 01 v7 p  |! g1 s9 @
let note 0
0 Y+ K4 _7 v4 Q. ^( ~- Lwhile[ j < people]2 }' W+ \/ [7 N2 ]* N* q$ g9 l8 r
[
& e: [+ i; w6 Z  ?+ tif( length (item i
2 O: y5 B4 ]. k6 o[trade-record-all] of customer) > 3 )

  R* @# v0 t1 d' M1 s+ I+ {[
) J* F: k: _: j8 qifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
( S2 k* b- a; c1 I3 y$ m$ C0 Y[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
8 O* q* c/ U) W7 c9 K% ~2 h5 j[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]: V0 R( ]5 C& t! w7 R  ]
]: f: d! w7 n5 L6 v
]
$ R" e; x7 V6 ^, zset global-proportion note8 `3 i2 {# a: a# M) |8 q  z& n
]' N: s/ h0 F2 a' U" a
end- X2 @- J4 H" t: I( J8 `

4 P( {$ ~% |. G) ato do-trade
- U! U1 ?+ n& O5 l2 Y2 {;;
这个过程实际上是给双方作出评价的过程- G8 q2 ]! q  w2 Z; A+ e. ^  L% }
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
+ ^8 r4 x# w  |; I; A! P( ]' dset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
0 z1 c( X# v# \; }# {# Xset trade-record-current lput(timer) trade-record-current8 K1 G; i% @. g; |, f" d
;;
评价时间
8 w% I. ~/ e, B% J( Zask myself [
# ?8 q3 \7 {% O2 p- J  g/ Xupdate-local-reputation
0 ^2 |* B8 P7 n1 z  Pset trade-record-current lput([local-reputation] of myself) trade-record-current' M* u' `+ f& s% \! l
]
4 ~# o* f/ w2 f& |- aset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself* k. Q! L9 e/ Q! S+ H+ H
;;
将此次交易的记录加入到trade-record-one
( W; b" R6 E* \* Aset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
0 \0 F. s, w/ ?8 Alet note (item 2 trade-record-current )
/ u0 ^4 W' b$ m% s* y/ e0 e& Iset trade-record-current
; Y) A$ `7 I5 p+ y8 ^) _0 v  F(replace-item 2 trade-record-current (item 3 trade-record-current))

# M$ I5 S  ~, D$ p  {$ fset trade-record-current
4 ?( |8 M* ~5 m# K/ _6 B- U; ?" O0 D(replace-item 3 trade-record-current note)5 W6 M* ^# T; W/ H' t( V

: y: C8 ]1 N$ ]5 G9 [

% u9 s8 }, C' s3 G0 B0 ]  aask customer [( \3 O: Y* g  X2 ^
update-local-reputation2 ?) z- ]1 k3 `' b9 z+ w; ?8 w- V
set trade-record-current. q/ f) Y. X5 ^- y( i' z
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

+ g, K9 _" P$ ~! Q2 U9 b2 l  u]
. k* ?6 i8 X& f$ D! e$ {2 v; K1 c9 T7 O0 [( l* ~" c
% e2 u) O) \% r0 X7 R
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
5 g* A# U% X' z7 D$ z0 g; U
2 o/ r) F* _) U( J
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))* {2 ?- F: Q( \, t3 I3 s  A
;;
将此次交易的记录加入到customertrade-record-all
" S- u$ i# V& i/ Yend
: t5 K7 d8 j# j% K8 ~
9 I; L0 H; j+ T+ Uto update-local-reputation
# V7 T. ~# L1 f9 Tset [trade-record-one-len] of myself length [trade-record-one] of myself# Z+ W0 x9 `  w0 E$ i5 n
$ z! o9 {& C2 Q, G

& E8 c% r1 w) h( ~  g. e;;if [trade-record-one-len] of myself > 3

9 p, Z4 o9 S7 ^, p7 F! bupdate-neighbor-total
- q- X: N+ m* |- F0 d9 V, M;;
更新邻居节点的数目,在此进行
( V0 J6 m4 R5 f( \1 N, glet i 37 n4 v7 V9 b5 }  P7 r" p. N  u
let sum-time 0! y5 M6 A0 W" @; a6 y% E2 R
while[i < [trade-record-one-len] of myself]7 @( Y0 H% b0 b- L
[
2 }' g  q/ _1 j4 J* b: Yset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )" m, z+ y) x3 I" a
set i
& h! c( O0 S' _, H( v% W( i + 1)

2 X3 y, p& E* Q5 V/ [$ i]6 y* l) ?$ [$ e$ {! |8 ^* d
let j 3
0 m( u: F, H; mlet sum-money 0
8 y4 b6 C' c8 `while[j < [trade-record-one-len] of myself]
$ \) J6 X5 e4 q8 J/ c[
$ K. s0 b$ d* @) O- Nset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)- d+ W* l  _# o) D5 a1 w/ r
set j" A/ @- y+ {& ?1 K
( j + 1)

# R7 S! y. m& P5 |]
& H9 Q' V) s/ d# ]let k 3- K. @7 S- g" d* S( h) c
let power 0! z% G8 l& T: Y2 E0 O* j1 f; D4 }
let local 06 V# d7 k) @& ^9 a* K
while [k <[trade-record-one-len] of myself]
5 E2 V- i+ g: |6 T( ]6 _[
  Z- F; l8 B1 x' y5 ~6 u2 `  H5 @6 m5 nset 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)
- j1 Q) S. j& I8 Z" oset k (k + 1)
' r! P6 o9 Y7 `2 }/ H: y0 P]6 U8 v* w8 P1 G0 [+ @
set [local-reputation] of myself (local)
. p, l  R$ g0 ?% i1 x2 eend
8 ^. i, J/ f$ _; O8 V; m8 \2 H, }' i0 V$ u
to update-neighbor-total
8 h( R" P6 }" V, L- M5 Y; V+ m0 [8 S5 D/ R: O/ q0 u0 y# j# m7 G
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
2 h& u0 q" U3 b2 R% S4 P/ Z
2 Z& o; G8 o' l) X9 s6 a4 r% v" l

3 Q! q5 m; `' w% R5 x9 iend
1 N! p' m9 I; [0 b" _6 D# D6 h2 |
* r4 L; O6 Q+ \1 f, M, F+ Wto update-credibility-ijl * ^% d' O: U  v1 c6 ]& p
/ p+ n- l( S" Y$ @. p: O
;;
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。) h' S. r# N: f, W  g9 H3 I: [
let l 09 |. Z( c% u( l+ k- u" g' m/ H( ?
while[ l < people ]
0 Y+ `+ E) g. j9 f3 s' U) V;;
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/ [8 Y: w5 P# m- k' d* c6 |& ^' l1 w
[
  j! Y/ C+ d2 @0 V0 N+ g9 W+ alet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
+ X3 V: _5 O* t9 {& `" V% V+ Yif (trade-record-one-j-l-len > 3)
9 r# s- M3 j' O) c, l[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
+ w+ S% k& I4 A& I( klet i 3, u6 P$ @* y3 S: ?, @
let sum-time 0
$ p) e" n  Q0 P& u0 d" T) Lwhile[i < trade-record-one-len]
3 A! E( {0 }1 Z0 B- }[
9 k) b9 ~% ?* p4 r  S. I5 y- vset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )$ F" g( n5 C1 K9 T
set i
. R& T3 ~8 _* `) P5 Q( i + 1)

: l9 n. j, G& F4 B, {]& K5 U0 [$ n* b
let credibility-i-j-l 08 C- c5 w3 C9 G4 o
;;i
评价(jjl的评价)
; @  |# V2 x) x. H! ?let j 30 p# M$ ]7 v# Q+ X$ R/ {: |. ]$ U
let k 4
8 a' n# f, A6 Bwhile[j < trade-record-one-len]
4 \/ e! b: h& {( Q: \( Q[
7 g2 }+ I1 a; @' `$ b7 O2 |: V# ]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% m5 n& P8 m8 v/ C% g5 n
set 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)3 R; \( g5 ]1 \5 B1 W2 I
set j
7 m) n) G& P7 ?! m+ i+ {2 v4 [( j + 1)
, i5 \! W( Q1 R! v, [) u- D
]
0 D( _; D* p4 g* l1 F: l& B6 e$ ?0 ^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 ))
6 }0 T2 _/ \- ~" {# q/ H  I% j" D  {
4 u7 g! K! i- O/ D
( L" t' i8 x0 N  v5 q
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
- i9 i  d9 n8 V9 I) v;;
及时更新il的评价质量的评价
9 ]8 e7 T$ y, Z% J- qset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
/ X6 m1 a4 e: o' X& q) c5 B' ?( ]set l (l + 1)) a+ P& U$ q* c/ f
]
  [) U& ]2 @/ f  kend" A5 H% i! K/ l! M# s) e4 o6 W

' K( z" [3 O2 c. U. uto update-credibility-list
( S! }; l+ [- u. R8 M+ d% hlet i 0
3 t& L: L" E8 J6 }while[i < people]6 r( c: ^9 H0 m1 e5 j
[
" ~- I; }  L& n$ Tlet j 0. M: Z% a; X3 C% G* O5 K4 J
let note 0
6 S4 b6 a' L8 T+ o: B% Alet k 0
9 c- N4 I  c+ N- Z- F;;
计作出过评价的邻居节点的数目9 n+ [, F0 r+ l
while[j < people]
1 p/ {) U+ W% ~$ H! B1 S[
9 Z5 c1 A- [/ C# c  j6 n" Bif (item j( [credibility] of turtle (i + 1)) != -1)
/ g& q! {+ v( N" W8 [;;
判断是否给本turtle的评价质量做出过评价的节点8 o- T- G9 P' d3 ?
[set note (note + item j ([credibility]of turtle (i + 1)))
3 y3 L3 |' ^9 K7 i/ o, |;;*(exp (-(people - 2)))/(people - 2))]

" k* C' i! f6 L, f  m+ a; o7 oset k (k + 1)& S0 l/ k2 Z0 Y7 a$ Q1 ?
]/ p) |2 ?( K- `* T4 E* |
set j (j + 1)6 r. i- ?5 |+ @& _" F2 }' k
]* Y! f5 u- z6 T/ N9 k
set note (note *(exp (- (1 / k)))/ k)/ a& X0 X( f# g$ F% E3 n0 C
set credibility-list (replace-item i credibility-list note)
, Z& x9 T: e$ C1 W6 S% B8 \set i (i + 1): _# _( A; E! a- W, E# [
], o1 a0 x  s* E7 E5 [+ O
end
8 T/ p) b0 t3 c! m
; k! \  S% T9 m# \to update-global-reputation-list
; }! d$ K+ N" O3 a( M8 Z* r# flet j 0. X% v) P: o' E% _) H3 c/ I
while[j < people]
: T8 Q4 a. F% c9 _[
6 o0 q- g6 k7 I" b! B6 n! Clet new 0
( P: Y) ?6 b9 W8 X: I;;
暂存新的一个全局声誉( v. a% f6 l% K( \* t. C" l1 U6 n+ O
let i 0- C* h1 S* F' z1 O; I& v
let sum-money 0
7 Y6 f1 f% r  olet credibility-money 0
0 E7 q$ u" R: Q0 lwhile [i < people]
2 j5 a5 T8 o$ B' T- r[
* _3 u' M/ `% uset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))0 g! v( \  o+ a
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))& O( p! u2 z0 O/ n3 J  p" ~' H; D
set i (i + 1)7 ~" h* e( Z  ]4 \, m, i* L% R
]  v/ b1 e5 f7 H& D6 }
let k 0+ r9 X8 t  m3 v* y: K
let new1 0
7 z( `6 h$ I: @/ e8 }7 h1 t& Kwhile [k < people]
- O8 h' b7 w3 s7 @; G[
$ ^8 k: u% a* _& O5 F! W& Eset 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)" X6 a! _/ l+ m1 Y4 q2 O9 \
set k (k + 1)" z8 [" X8 z$ h) z% n5 t
]* Y* p' z( K( G7 `& {* g- f
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 4 X: i) E9 C, |
set global-reputation-list (replace-item j global-reputation-list new)9 J; h/ ~0 m( E+ B( R  F
set j (j + 1)6 I: d( c% ~8 ^% g/ h- [
]
+ O2 v$ j: K6 v% T' x5 E9 jend
8 f) u1 b3 G# C/ ?+ t# w$ `
4 q% l. b. y, ^6 e
+ G% D2 k- R- q! z- m7 t' d# U7 \, u9 ]
to get-color
- a- O2 k1 J; s1 u* ?9 |3 K) @; b3 [& n0 r( g1 e- s1 @
set color blue
( b, U0 L4 Z' u6 M+ H& n0 M8 I
end3 A; |9 [2 B) A! O4 A* R% ]
7 R; g# b3 @9 j0 [! z* `$ N' C  h
to poll-class
6 f0 D2 D9 ?$ c, R# Tend8 b8 h- P% q- Q

% I! Y% Q% m4 T3 g; v3 kto setup-plot1' J& y8 B- j5 e1 c9 Z" P. m
* G- g% ]9 Z- u8 P
set-current-plot "Trends-of-Local-reputation"

8 }# z8 ^. s/ o5 G
) J+ t7 ^2 |! Z. p* ]set-plot-x-range 0 xmax
7 ]3 t) N  N" Z$ x# j
7 N6 N' ?$ T4 w1 n
set-plot-y-range 0.0 ymax
$ f- _- u3 e: ^4 o2 M8 O
end
+ y; \8 k/ P4 H. C! h3 H+ @$ u+ c$ k; ]
to setup-plot29 E1 b# y, B/ K3 S
" F1 b+ }" r) G2 U' g
set-current-plot "Trends-of-global-reputation"
1 G6 @6 s4 X; X. F
' ^; Z5 c: C2 P5 n8 l7 T
set-plot-x-range 0 xmax
# Q: O" I2 [- U% I8 N! ]* r( `  @
  o% `8 h& o  f# S% a/ Y
set-plot-y-range 0.0 ymax
% ]! A& m0 b% y8 m6 q4 i% t
end
+ j& t, ?- E5 P! Z1 J! x' x. u
# X$ \# l4 \3 Eto setup-plot3
% v! s/ B4 W, F% F) Z% `
) Z3 g3 k8 T$ g  Dset-current-plot "Trends-of-credibility"
  e% M  D! m2 B3 r

* m  P. u+ S  j) dset-plot-x-range 0 xmax

7 N) k. W$ B5 E# F
/ x: B) _" t1 Z: H( S. Pset-plot-y-range 0.0 ymax

; @5 v/ h$ {; X6 p! i2 D: a; S3 G1 Zend  H1 h/ J9 E  \' E5 `0 E: d
3 j* j$ F$ m$ w8 j' B% x- n! a
to do-plots9 {' h2 N/ A8 |) d( p+ P
set-current-plot "Trends-of-Local-reputation"9 M0 j0 E+ M$ }7 D# U. h
set-current-plot-pen "Honest service"
$ ^/ f+ E$ f) m& V! p7 _" pend
8 L1 f1 g8 h/ ~& a! A) Z
5 C4 N: t# l6 S: |8 M" Q[ 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.* ^8 v9 M1 N: [* s8 J+ M
7 G% [7 h- n) J: u& W7 |
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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