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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 X$ q* ?: ~/ _
to do-business
$ F5 o2 m. y0 R$ h- |# N rt random 360
$ p3 k2 Z  _2 P  o fd 14 [/ f" w- o% [/ g" N
ifelse(other turtles-here != nobody)[
" U* G0 G1 r0 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.4 D1 F" K1 x" i
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
7 ?# u( o7 C$ E( |* I8 ~   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer9 c( F3 Y9 I( z, }* @
   set [trade-record-one-len] of self length [trade-record-one] of self+ _1 h! V& X, ]) n9 A$ N) g
   set trade-record-current( list (timer) (random money-upper-limit))
2 a# C5 X) y9 k8 M) A4 p0 }: s' p0 e$ ]9 O9 l- n( L
问题的提示如下:: x& S2 d. P/ a
2 _; ^$ q( ^3 P1 d
error while turtle 50 running OF in procedure DO-BUSINESS# ]; s% @9 B- d$ F3 L
  called by procedure GO
; |0 P  L# ~5 ^4 }OF expected input to be a turtle agentset or turtle but got NOBODY instead.
: A% F4 I$ z4 }( h. e2 Z, g
(halted running of go)' m  w7 y3 M2 [. A' x: A/ h+ U
+ I0 b/ n+ p; h" a, U$ O. U0 f, g
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~~
% Q# D0 v1 f( x8 }2 R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
" K% F" O; d3 D7 l7 t( vglobals[
5 [& S/ c! _- ]# E, axmax4 v$ |- X8 l4 J5 @+ ~( X& o
ymax
* I) i( J$ O( ?global-reputation-list: U7 c8 g9 G1 I9 Z+ t/ N& j

4 w( h2 j5 J( };;
每一个turtle的全局声誉都存在此LIST6 U- V6 A" e$ J8 N& ~6 m: Q* P, O
credibility-list, f4 ~0 Z4 B$ `3 ]- o/ x
;;
每一个turtle的评价可信度) l* Z' M! X+ w) {6 Y
honest-service
& {/ F! Q- e+ [& Sunhonest-service& ~1 y' u5 r  ^# J7 |
oscillation
9 ?7 P9 O2 A1 d! f+ M; @; Drand-dynamic
: a3 d$ I/ p+ }8 p' a]1 k" U9 q* a* P5 X; j; M0 p+ o$ i- d- R
/ H) m$ ]$ R/ T: Z; c& i
turtles-own[
4 x4 E, v2 A1 }  T  Q5 f- `+ Z7 W8 Utrade-record-all! I  \6 u- `! X. @- V
;;a list of lists,
trade-record-one组成5 R" J' c5 u( G& z+ D0 v% X" L
trade-record-one
2 _9 _3 m5 ^1 ~, s;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录; _0 g0 b3 w( ~+ t8 @
0 R9 v. g0 N4 k5 `9 O
;;[
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]]- y/ ~  @: e# T' p  T" i
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 V+ \/ y  Z9 K5 p& G/ D+ p! i/ Fcredibility-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
: e: G: B/ _' w4 E' h1 Vneighbor-total
* F+ T0 C  L, G/ d5 A;;
记录该turtle的邻居节点的数目
6 N; c' l8 n* K% itrade-time6 z: ~; d# J5 B* v+ ~1 L: C# j' U
;;
当前发生交易的turtle的交易时间/ B8 h. Z' D  ?3 C4 f! S; G% s
appraise-give2 o: y3 h3 c& v  ~1 m$ e2 ]5 H
;;
当前发生交易时给出的评价4 c" t4 P7 R0 D# [% b# {5 u
appraise-receive- ^* @7 x; }; w- N1 S) ]
;;
当前发生交易时收到的评价$ o6 p& y, T- W' s
appraise-time# u+ j( e- T% A) G1 J$ j2 x5 _* Q
;;
当前发生交易时的评价时间8 B5 A- i: e3 Q
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
0 Y5 E) P" P5 p! f3 otrade-times-total( F8 r- v+ n0 t
;;
与当前turtle的交易总次数
" l$ u1 N# \6 N5 T) Jtrade-money-total! z& o% e/ m$ Q$ @/ X4 u# d
;;
与当前turtle的交易总金额' L, N$ W6 O& |4 d
local-reputation7 w6 L" M6 ]4 Z1 ^. h
global-reputation
3 d9 h, D2 c8 t+ c! E* `) Jcredibility  c( {4 }% T9 ?/ f# u, H
;;
评价可信度,每次交易后都需要更新: m6 \! E7 \; S8 M3 R4 c8 q
credibility-all
: F9 S0 |2 V# b! @* h/ W: r9 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
: f1 H; C+ q, K" @- }, v/ J9 i9 \' A3 }: d, m* q4 N; t1 h
;;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
. Z. Y7 Z# A, s1 k2 q% xcredibility-one
" L6 b. g' s% `- J;;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
1 r! r, A* g* p: Tglobal-proportion% M/ [9 h" b6 Z+ A
customer
8 _' `) Q; ~% t2 C: Q$ }6 O: @9 Bcustomer-no  z; C% I) }( y; D( U$ A
trust-ok1 ?0 W& o+ G2 j  a
trade-record-one-len;;trade-record-one的长度
  d. |' {9 s  \+ S* b: k  y]
7 H% f' b- v' B8 B) C+ S/ {, B4 e7 W/ r. x5 a. k
;;setup procedure
0 J, s3 |3 w. F; E, {3 n$ Q, K3 y+ M, G+ W
to setup
2 Q/ V7 r3 Y: b- v4 C2 p6 d& M0 Z8 V8 i
ca

- u. J" o7 ~: F  ~7 u' @0 ]4 y& @) ?" x& V, L6 \2 z" C' O
initialize-settings
+ C+ }" D8 {0 v5 D8 W6 m5 X

# j" ~6 q" q- ]0 Fcrt people [setup-turtles]
* `+ J; S  f+ s2 [& T9 i

6 f9 `6 c# ?. P' w$ `# D$ c3 Vreset-timer
6 W$ q& n0 }% p9 a

% N% S+ Z" B, e# Gpoll-class
/ _7 ~- B5 K! a% {" N. i1 k# }
+ e. g7 n+ t' Q) i5 ~3 |9 h
setup-plots

! p9 g9 G' A3 {' z* d" f% Q  S
do-plots
9 i9 B' T1 {5 @6 s
end) Y% s9 c% K; B5 i- D2 Y5 |$ ]

6 X( z8 |! X4 w  U) q# o+ ?' dto initialize-settings7 ?* N- J: v. H0 ]7 `
) v0 ?! Z$ X& @& {* H: r
set global-reputation-list []
0 {3 Q# x) |  j: {1 g2 h

, T6 J; `) j$ T, a# Oset credibility-list n-values people [0.5]
# Z% D" W$ A' c. R' C

. C* ]+ x3 W: d! Qset honest-service 0
! O) `( V5 J; I
5 x6 ^5 s: J! Y# i' K
set unhonest-service 0
& P& m, \% P# z1 X: F

8 W/ u- |4 U# z" dset oscillation 0
4 D: o( z: O6 e, k. B
" p) M) N& e9 I- H0 L$ H
set rand-dynamic 0

5 n* j+ b2 z) x) y3 U6 e: oend
) q9 P% L$ G0 i! F* y% S& S# q. W- ~: Y7 T  H/ M: c
to setup-turtles
1 Y3 x1 q# \' ~  }: n7 @' X4 Y; }6 D8 v' eset shape "person"" Z6 i- P* \7 ^! ^2 n
setxy random-xcor random-ycor( h/ R& V$ z, |6 b
set trade-record-one []6 T; j4 X# }6 D6 N' H

2 }/ {9 B& @& h4 rset trade-record-all n-values people [(list (? + 1) 0 0)]
* z# F# \1 c, r8 ^# U
" v# s/ n4 ?( v5 i. `* G9 ~
set trade-record-current []
' z: n2 i! ]5 l; |set credibility-receive []; \9 k* v7 M+ L& B1 X$ o
set local-reputation 0.5
( H# t7 o& [9 hset neighbor-total 0
- @% w& j* V  ?& _( N- b8 t' n, pset trade-times-total 09 w3 t3 T- o$ V9 {5 _) O: {8 G& P
set trade-money-total 0
: \% O, W! U- O  A/ \* S& tset customer nobody
0 _1 q4 m0 {9 h1 y+ a) mset credibility-all n-values people [creat-credibility]' x4 b( Y; A3 p- ^0 N  g+ d8 L
set credibility n-values people [-1]5 q) B' M# o8 ^$ Y$ n/ I
get-color; R% Y0 E+ ^  V- U9 {2 ?% J
9 `% B5 }% C* C+ p" q  ^
end$ j$ X  g. q5 n8 Q, v* g

# R2 H5 ?  v' ]7 {; \( E3 ~to-report creat-credibility
3 o* O( \9 C' \; t" Treport n-values people [0.5]! P4 U7 u  V" K! z) o: m) A
end
8 y. n& a3 P" C! s1 y8 S
! t/ A8 J4 x* B7 A5 Yto setup-plots" Q3 h0 p; O# x- S- O

  C  M3 p; S. p# m# Oset xmax 30

* o/ e4 c1 U/ O: U6 ?) ~& l7 m: s6 {
7 J  n3 I, A! `3 A# R- X; Nset ymax 1.0
4 v/ f3 R1 r( C" b* K/ l' @, l
7 s* A  T- C3 w
clear-all-plots

4 Z6 N8 M7 [+ Z" }
- {; K$ k1 m# msetup-plot1

( g" ]9 [- V9 D) ~5 \  {1 c3 q) q* ~$ A, S0 z+ ^) |
setup-plot2

$ {. H$ v% r' S2 d2 B3 b" h, j
+ `* Q& m3 i, p8 Csetup-plot3

, U) A' T* h3 H* Q; {$ Gend
3 ]! Z! @1 _$ G
7 Q& i! f6 j9 q, g/ n& V+ };;run time procedures) j. Z/ y& z- L6 d- s" |

* |  }0 t/ H  x: bto go4 ]. w0 M% }: |
/ S6 B( m, H9 h. j. x/ V
ask turtles [do-business]
+ T2 G6 \* R  `0 ~+ n3 [! D
end
( N% Q! S0 _1 z) A4 T
3 Y+ C$ |; q$ A/ Sto do-business   L0 w8 N- O: A+ L0 o

/ g0 u7 @) L& Q% ]5 h9 s7 D0 @' d5 U7 {8 _2 r1 ]
rt random 360
) B0 a* b! v6 L: v  K6 Q+ g

9 t2 a0 {- }! L, y: t5 y( ~fd 1
- t# ]$ d9 @: }7 N6 z5 ^
. b% }( L& _1 f9 u: E
ifelse(other turtles-here != nobody)[

5 R6 @! Y5 s$ k5 E9 A1 a, V: Y: [0 s" y* B* b2 i. t8 J" p5 K4 ~# D
set customer one-of other turtles-here
6 t( |& n7 B1 j* R, ^- R
3 {: z* G) c7 b# [
;; set [customer] of customer myself
9 S0 A# Y7 o8 B8 o' w/ G

6 b. R9 C* q2 i: Q2 Q8 s1 |set [trade-record-one] of self item (([who] of customer) - 1)4 D  q2 P( R/ w1 }6 g- k/ h
[trade-record-all]of self; L, R4 `; k1 S; L+ R  G
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

* F6 K9 b; D* V3 R8 Z7 @) x( j9 b6 n* K+ W
set [trade-record-one] of customer item (([who] of self) - 1)
2 \! i0 F4 r( J7 I[trade-record-all]of customer

; s+ ~' `" C& ~" Q. k+ s3 l! M* Z: }# X
set [trade-record-one-len] of self length [trade-record-one] of self
, B( A' C, \& B, T# G
. }) j8 A- f% e2 K' {6 Y* N% ^6 l
set trade-record-current( list (timer) (random money-upper-limit))

# Q& V& O$ G6 S# C6 Y1 b+ h9 E1 w
ask self [do-trust]7 ~- j  F' t7 I0 v& F1 c  m! C  X
;;
先求ij的信任度7 B7 u. Z, m4 @4 u" }9 b

( |6 i" `1 V) d4 f3 L* rif ([trust-ok] of self)
) h/ I- X* G# y! ?7 J0 L;;
根据ij的信任度来决定是否与j进行交易[
9 P3 p5 o/ {+ v% }- T3 I3 L' ~. Jask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
, N8 i9 \3 w8 M( l" E  c; N5 e& M* }4 W, S0 l  G4 ^1 L
[
8 W# j1 _6 ^/ [# W

4 h% h- Y: w- |5 ]) m8 U0 V7 y) Wdo-trade
% c; U6 j6 L8 q/ q

1 i  `# B( t2 m% L) d, wupdate-credibility-ijl
  w6 ?! I4 n2 W
: G" _; [6 P' \' H( ?5 X0 J
update-credibility-list
( p& R8 Z' F8 n" h! b

4 |7 I; k8 z8 n6 Z4 a6 Y) U1 ]# P! C+ b6 |, \& O/ n( r
update-global-reputation-list
$ T" }" n5 h7 ?% O! K
0 e& ^9 w" [8 B% W
poll-class
/ |; l7 a/ y# I- F

' x7 Y3 k- Y7 p* F; [! ^( S. mget-color

. P$ r7 e& P% p( j3 k$ @. |- z  j4 o6 F5 B2 t; _
]]
, Z# q$ D1 j( N8 V. Z. J+ D& N7 n. Q  ?; }
;;
如果所得的信任度满足条件,则进行交易
. O' W2 [& x: J2 Q
3 b& g0 f7 F' f[
. y% ]8 W. j$ w! n1 ?
$ i3 }% i/ T: |  b* H. u" @
rt random 360

1 u! v+ S0 E# k, q  o) O  [$ s2 W4 `0 k" F6 G5 S
fd 1

8 n/ W( d/ k: @" M4 ^: S; ^/ X0 w) W$ i
]

1 q) A: N* g5 z. Z* x. V
) b4 a# ~, }5 x& p6 |% ?end

, I! n6 R7 z. J3 z# K3 E" G. F; q  W( O, R4 P
to do-trust
# w5 `0 q  L3 O- }( c6 H$ Oset trust-ok False$ }" ^1 g' t8 K6 p' F% i
+ J0 u6 N- ^- d/ k3 F" R; I+ H7 E
4 w4 y% Y! L; S& [5 L( |
let max-trade-times 09 e- v: O& {* Q# D" C, g1 B
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
9 l2 c# {8 M8 e3 w8 s2 K0 r, Zlet max-trade-money 0
7 e, w/ Y4 O6 Q8 |' oforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
% H+ o/ S. t0 x- N. `) f% H! wlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
2 d( o, V9 x) d& E& F% H
- {* v) W! t% B6 o1 s# m" R& X

- g1 ]0 @! i0 T- a, A! rget-global-proportion" z0 C# u4 L! J& v  K4 Y
let trust-value
$ s% O! v/ R, _# T) O8 tlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
3 O9 e1 U" H5 {& I
if(trust-value > trade-trust-value)0 d1 {, H& `+ Y" p
[set trust-ok true]
# C/ V% n+ N+ H$ O3 oend9 x: s/ s  S# e

/ `) C& O% T% B! {# oto get-global-proportion
: w8 s6 }% @( T! r; Q% E' Wifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)* H* V. C1 Q6 k! j; y) N. ~
[set global-proportion 0], B0 z3 ]3 I+ }' p9 O; h7 ]* n
[let i 0
" G! _1 D4 d( Y1 ~let sum-money 0
* Y' X0 d$ y7 ~while[ i < people]
- u# _/ `% c& d  r[
/ F$ @; G) R. O5 }if( length (item i4 w  ?3 ~: j2 ~% ~" y# ~
[trade-record-all] of customer) > 3 )
4 U& X6 @2 e$ G
[9 V2 ~$ Z/ A' t% r! u; v
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
- G. A% n/ N9 v$ ]5 I]
& {5 Y' U! z9 ~8 w/ v& X]% r/ I. L/ H* h" ?5 v8 y& e: P" S! k; ^
let j 0
4 `) `+ {) _/ m- {2 w# `let note 0( Z- T; E( j& Q' A9 }0 Z/ Q
while[ j < people]
. O% L6 a4 y& b+ h( Q3 s/ o[6 |; O' l3 I& o- J; R5 |9 B
if( length (item i
* X$ q: W: @# }- X! F0 V[trade-record-all] of customer) > 3 )

( U0 R/ R5 P  \1 i* x9 e[2 w. F4 |6 z0 A1 k+ L
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
- B/ z4 [( Z6 U4 ], N0 L' i! P6 k5 j[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
5 ?3 \( N2 m! L5 D1 d: J[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]: m8 R- w( A; f  P; H0 {2 P
]* t& `  r: l* F2 j. d6 L- w( J
]
# y% p4 `+ a7 X8 N- _+ pset global-proportion note0 d. ?. J7 y+ i$ ]
]' X9 G. X; m0 `+ ^  M
end1 r2 c: f1 v* x* Z+ [

* o6 \/ Z# O: y/ Eto do-trade- b! O7 ?' @( x: \) B
;;
这个过程实际上是给双方作出评价的过程
* p+ D! N  c% n3 L9 `  s; p: \# Iset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价9 W+ K$ C5 J1 T+ x
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价8 w8 I1 T8 M$ u1 N1 [
set trade-record-current lput(timer) trade-record-current8 Z: z6 }- K6 K' x8 \, x: J& L4 O) y
;;
评价时间
: I0 u: m1 f9 E1 ?8 x* w+ K0 r, c8 ^2 F$ L. eask myself [5 x& s* w: ?. U3 ]% s
update-local-reputation& U2 N5 ~# C5 c) k! N" Z2 M) A
set trade-record-current lput([local-reputation] of myself) trade-record-current
9 A. ^( E1 g% h2 }]
3 z. i: a2 }- a/ p: o) uset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
# x& v! n; ?' f& @% o/ o! {: i1 |;;
将此次交易的记录加入到trade-record-one
+ [& s8 y/ k6 R4 hset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)$ t+ d% }2 D5 Y# b% W8 u7 k
let note (item 2 trade-record-current )
1 w1 u+ G3 o* X" lset trade-record-current- y# l- k) B. u: }) }0 g& e6 g
(replace-item 2 trade-record-current (item 3 trade-record-current))
5 t4 U* \  g- C
set trade-record-current
2 U* A6 W' |$ C1 p! H" Z(replace-item 3 trade-record-current note), J' ]! p" v8 b, b  R0 l1 b

. G) P7 b( L, {! ~  g4 S: w
+ e0 M, x* W# p; V' y1 |
ask customer [
' Y4 D  F7 }5 F& y) w" @3 o  ?) nupdate-local-reputation5 X5 V4 G' n0 ^# ?+ I) A
set trade-record-current
5 |7 B: c* d1 \8 {7 ~( M$ ~9 G(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

2 i7 |2 c. E- ]9 w. \, p: q: A" B]2 v0 T1 b- S) X; t/ ^

- H/ s2 i4 A" A  P. |' g
$ B* U6 H. ], t3 ?  Y' W. M
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer- _! I4 E( q) K  r0 k- \6 ^
# \, y) ^9 I7 O9 Y* ]; w
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
6 ~+ k1 B$ s* U8 }8 ~;;
将此次交易的记录加入到customertrade-record-all8 x( U7 R8 @; F# r
end
  W2 d' J7 \4 \3 j8 Z+ d* R) S* ]
( R+ @! ^/ p- l* M0 c" Vto update-local-reputation2 e( m! L/ T/ F
set [trade-record-one-len] of myself length [trade-record-one] of myself
* q7 s# H9 `: L0 _- G+ m
$ ]9 K2 c& u( [
$ m- H. S) X5 i& Z& };;if [trade-record-one-len] of myself > 3

- K7 G1 Q- q( A) I% m( Z; ^update-neighbor-total
% l( C8 V3 J' f# G;;
更新邻居节点的数目,在此进行* G+ @! i0 y! H- M
let i 33 \% Q/ E- l3 G
let sum-time 0
4 q% g2 s, W0 v: O( pwhile[i < [trade-record-one-len] of myself]. @+ C9 m- G' G
[
( U& h6 x9 F) f) k. ]set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )$ u+ [# {) x4 j* j- @  t( H
set i+ U! S  \$ T5 K! O7 w$ ]
( i + 1)
2 }3 i* y% O/ W' u! C% e( ^+ n
]$ J) L, o+ r" |5 ?3 y  ~
let j 3- _3 Z' S0 P8 b, ^8 _" \$ y2 o
let sum-money 0; x! B( [! {7 K1 @( W' Q( a6 Q# G
while[j < [trade-record-one-len] of myself]% Z6 Z. K% F( F" Q0 G: w
[
! Y) M7 t" E- {: U$ J# rset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)( H# j* C, \; H2 ^  R5 X4 l
set j- P* Q1 [" m9 [2 O) r3 C
( j + 1)
+ d- S3 q/ k) M/ Z1 ^$ {
]9 _& z' W" t  t# ]/ X- [
let k 3( z' E% E! H( i- G$ b: c3 W$ i
let power 0
" J  Q! Q+ O3 w7 x9 M. M& Vlet local 0
5 ?& H7 V# L; P; z% h! k8 Bwhile [k <[trade-record-one-len] of myself]4 d: x4 _% |  v" I- S
[7 P& y( P0 t, v; ?2 w' ^8 d
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) ; B( H- i6 V8 l
set k (k + 1), K) G4 T9 a, G( y
]
4 U+ G" T. u0 W3 ~: ~set [local-reputation] of myself (local)
/ P' y! n6 |: B: Mend; e  G! u  ^' p* Z7 a5 c

0 f2 j+ a7 H2 w& A. fto update-neighbor-total
: o8 d! j1 }# P1 l# t/ B8 g8 c  s9 c0 V
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]' ?2 S( @* `8 U) v' l
1 u% J6 u, }7 _" R1 J- n

4 ~( A8 K, l- N$ wend. b+ Q( o7 {8 @
! b9 e' r5 n# h, s2 Q. @3 J9 q
to update-credibility-ijl
1 R- W. |, @$ `* _# c: e/ I$ v: u2 @$ {
;;
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。2 ?, X- r& y: s  I) a4 `
let l 0
0 }" O+ u4 Y7 xwhile[ l < people ]
7 S$ [/ }1 ]. j( ], Z; H) Z;;
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* B: J. K6 a5 c* X! y( z
[
% p4 L3 G( H7 v7 g. I9 h3 o7 p0 ^let trade-record-one-j-l-len length item l ([trade-record-all] of customer)4 Y9 d5 g1 _/ X0 z
if (trade-record-one-j-l-len > 3)5 \/ M& _' I+ W: q% ?# Z0 t
[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
' O" y9 \0 A/ tlet i 3
0 v+ b! t) m6 A; E, j$ Tlet sum-time 0
* n7 z! @; c' a3 @" o8 x* g. Uwhile[i < trade-record-one-len]
( c+ Q) q0 k" R/ [9 I[
" t! H  E; I$ }3 @6 }! W% t3 Qset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
3 w/ F, v0 u# V* R6 M5 f- Qset i+ F% c" l2 a- q9 |4 |( ~
( i + 1)
' s' q  f9 L  m
]
" {8 E% A6 K; y0 }5 Xlet credibility-i-j-l 0
& v3 n$ `& X, m;;i
评价(jjl的评价)
* d: r5 n( X: k: y' rlet j 3
3 z! v9 b# \" xlet k 49 F* b$ m! q$ O7 }
while[j < trade-record-one-len]
5 h. x! F) ^7 G* e3 S5 ~& c" Z[
4 \/ R9 a, u5 U- D2 r6 Vwhile [((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: d, \/ d7 N4 K# r
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)
  X/ S$ p# Q" {( {; Rset j3 B- w" U- t' ]% u2 F' l4 N9 m
( j + 1)

' G, g$ S) D& ?5 r. e$ @- T]( i4 g6 z$ D1 \: K, Q2 D) j% e
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 ))1 V% r3 q, F6 ]

. v. N. }( |9 [; d5 R

- P" ^3 i& c  s: l5 K7 _let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))! |5 G, [( k( N
;;
及时更新il的评价质量的评价
4 g* L' o9 W- h. l8 b) sset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]/ g- j9 u3 I) _+ Z' f+ ?
set l (l + 1)
1 g8 g$ {0 z# f6 |+ t; x3 N]7 w5 Y2 d8 I( C# t. |5 W
end
7 H; j( a$ x: T# C" x1 \# n% q; f& Q: }( Q2 _4 K
to update-credibility-list" w1 ^/ @1 s. g8 S  m4 B/ u0 N
let i 0
7 g3 W. Y# X+ k% e  mwhile[i < people]
; |7 h! {9 n7 K& f% `[
  X* t5 x5 W1 q$ \let j 05 C9 i5 ^" y$ a
let note 0
9 [8 y2 P( a" R" Wlet k 0. E$ ~  m; f" u0 `
;;
计作出过评价的邻居节点的数目5 t! E" c& b  D3 L& }% x
while[j < people]
6 u# V9 j0 d% ~0 Q: p[
7 V0 {1 `5 o1 E/ ^if (item j( [credibility] of turtle (i + 1)) != -1)
1 g4 Y& _, h( t* C$ {% U. W, ?* y* N& G;;
判断是否给本turtle的评价质量做出过评价的节点) Q2 R. o! T, }
[set note (note + item j ([credibility]of turtle (i + 1)))& A8 M* v- W) b
;;*(exp (-(people - 2)))/(people - 2))]

1 C. w$ V0 |% j/ Xset k (k + 1)
* X) Q( g+ {& P/ _2 @4 ]8 c$ r]
' U5 g5 |7 ~. h, [# yset j (j + 1)5 B4 J0 I! b8 d  d1 [, @% @$ v1 X
]
) p2 e. ?' M7 |% |set note (note *(exp (- (1 / k)))/ k)5 p" ?+ c/ d5 h- j' |2 L( w4 ]+ {
set credibility-list (replace-item i credibility-list note)
) k* _# N$ I; fset i (i + 1): y: l9 X/ j" D: ^  A6 d) M
]
6 {9 ]- C" c6 J3 i2 X( N8 I- ~$ vend
5 ~3 U5 u& |. x8 c; |" H: C8 j/ A8 [$ `7 e$ F- m
to update-global-reputation-list
0 R1 K% B. t3 n7 e3 clet j 0
7 I0 w( T" p3 a! X$ Vwhile[j < people]' g+ @" y# e8 [! A2 D
[
* a" y+ j9 H2 v/ ^* D, ?( Ylet new 0% q* i+ |' }' Y, i( p# Q: W
;;
暂存新的一个全局声誉
! P9 B. R( T+ c* o* g5 ]let i 0
, b$ E% {! f- Q6 P, I) I+ Klet sum-money 0+ N8 J* x# f1 A' @' L7 ~* m
let credibility-money 0) s! O4 M* }" z4 I/ L# [$ m
while [i < people]
; l4 Y: e9 h7 F' D7 G2 K; w[1 \% ]2 K5 G; b  Q( A" M# \
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
/ a) l/ z* \- F  A% t% \. F9 F  R) Wset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))/ x* X# }% C4 g- `
set i (i + 1)+ {$ ?% Z/ Z# m; S
]8 J: ]% M! [+ R
let k 0+ w+ K- \8 j8 p% z+ d
let new1 06 h5 S: j8 v+ Q' X, d8 [+ {0 J( A
while [k < people]3 r1 Z/ A8 [( O4 r
[- }$ P5 n* M. E' d) }
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)
* J6 w3 L. t* k/ g- uset k (k + 1); X* _/ u* O9 }) V0 P( F' d6 \8 u! q
]
$ P7 f% G1 O1 W4 gset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ; h" _  _' a. w
set global-reputation-list (replace-item j global-reputation-list new)
0 A& b- T, f( U2 P6 M% bset j (j + 1)
+ g: w' M  e1 y8 D8 m8 n2 L], N6 k* k) @: J% y
end9 I# _$ P2 y8 e* S- t
4 T- a" V7 K0 s$ J5 _* w

3 U) L6 H5 s6 O7 Y1 ^2 i8 S
' |4 K  F' v: F3 v) V6 b, Lto get-color' Z" U/ ~  }- Y' L

+ U/ E2 d. q3 C6 {5 [set color blue
. }7 G& q5 g& ]% v5 G: E0 ^" }( L$ `! {
end
4 K1 E6 f9 ^) r" F4 Z( |! t. E1 q3 e9 R; v. l
to poll-class
/ G: X. ~  t3 fend
, d( h' u9 d+ h1 m! R* m0 u1 e8 U% a$ ^. j
to setup-plot1- V% i% e7 F/ ]2 @5 f" h
$ l8 o/ Z5 j3 V
set-current-plot "Trends-of-Local-reputation"

8 v9 `( {2 t, ^) g* J7 u5 f+ _. V3 b6 n9 z
set-plot-x-range 0 xmax
2 p2 S' k. Z/ D+ R* ~

" _4 ]6 J% N5 _! u* i# i9 dset-plot-y-range 0.0 ymax
. g" D( N  x4 v( {; Q% }0 D& F
end
1 {8 F, A$ W7 g+ U5 a# }- q6 w
7 R/ h3 y: G2 J. ]* F; b# F8 {to setup-plot2  u4 l3 N) l% V  V
0 d& ]1 {5 H4 U
set-current-plot "Trends-of-global-reputation"
5 F6 Q1 l+ r; X! z0 ?8 K& k
/ J* I  `6 t( {5 U9 ~
set-plot-x-range 0 xmax

: a5 g# C% T1 [) }4 P+ r, e; _9 S9 E9 e
set-plot-y-range 0.0 ymax

# t/ V; y8 P( ]- ^3 rend
6 J  s* v- V$ A7 X2 J+ p7 h
9 B! y2 l1 z# q5 d( ?" B8 Kto setup-plot3: s! N. n" P: `9 W. V

2 W5 Q6 H  E' Z2 H$ `# \set-current-plot "Trends-of-credibility"
5 ?; ^; j* ]& U0 A# O

" z4 a' c! z+ I" u( lset-plot-x-range 0 xmax

9 C" [$ s: l! O% ~% B! k& Z: U" o0 M+ v& q( S' |+ ]
set-plot-y-range 0.0 ymax
/ d5 T: n6 X% R8 ~* L  o& ^: |
end
- E& Y% w, t2 c( g% O0 Y* B* @
2 O- l; R* {, q( m8 {, _to do-plots1 x, I$ w6 }6 I6 E6 w- V" @' J: y
set-current-plot "Trends-of-Local-reputation", a6 Y# s# E0 G, E8 N
set-current-plot-pen "Honest service"
" W6 z) Y# y, _end' m/ Y. M  D% N( b1 S+ _

5 H- M5 {! l* S# C- o6 _. g. \% Y- A[ 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.: g4 U1 ~! `1 H0 q5 K) t/ k7 t
8 e7 v) {' L0 M
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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