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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:
* m% t/ n* P" N& R) m  ~  @to do-business " J/ N) H1 F0 x$ k
rt random 360
9 u% q! S6 c* Z1 n fd 1
% a$ D" h  |2 o6 X1 c2 L ifelse(other turtles-here != nobody)[/ e: j& W8 j$ B% w( u7 A+ |* s
   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.' s4 }" E1 l1 f+ y  i# e3 p9 e( |
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
$ w. q1 s1 n3 Q   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer) k" H( G7 Z- h$ P$ c
   set [trade-record-one-len] of self length [trade-record-one] of self
; E1 @/ h" C- i; q, T1 L, q   set trade-record-current( list (timer) (random money-upper-limit))
7 ^3 t9 Z6 o; S7 i  Y- Q  e! g# c% I6 T
问题的提示如下:
/ f+ n0 ?7 P0 x- |% C( h3 _' @: d1 ^3 P7 N8 X
error while turtle 50 running OF in procedure DO-BUSINESS
7 f6 A/ S8 O6 N2 J$ i. p- W/ t  called by procedure GO& j" j- \+ O- z
OF expected input to be a turtle agentset or turtle but got NOBODY instead.: b- n: Y, O3 o7 i7 o$ S1 F* J
(halted running of go)
" m% f1 L: J; v+ Q( e$ t, M" A8 ], u2 E. z- b7 U
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~~# h$ P, t! T- b
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6 `1 }; c  r9 n0 j
globals[3 l* ]* o9 |, w. ]4 y" d3 E# U
xmax- G2 o0 f9 J! G; x% p+ N
ymax; `: ~+ s1 j3 q4 j. |: O
global-reputation-list' H2 [+ L3 W  r

3 c2 d3 d/ @) D( o. Y/ `, \5 V;;
每一个turtle的全局声誉都存在此LIST& Q8 t6 k6 G! O. L3 y
credibility-list  m: X" x, a+ n& S- b$ m8 K
;;
每一个turtle的评价可信度6 V! w, q& e6 u6 z4 y0 p; Y5 {
honest-service
& Z' ?+ |5 n. f/ Nunhonest-service
8 E/ q: S1 Y! B: yoscillation
; u" h1 {- z: B, O* a$ z6 [rand-dynamic
) i6 e' N, u% a/ u3 ~5 F) Y, A]1 g7 Y( Q$ C) E4 v0 L3 |/ \
/ `4 Z% \, w. d; L" _( P* X4 l$ s
turtles-own[
! w$ l( c) P  p0 @1 L5 Etrade-record-all
7 J  k' |- L4 {3 b;;a list of lists,
trade-record-one组成
1 k4 E" p) ^# H+ i% @3 Ztrade-record-one
) P' m; P* ]3 P: ~5 k4 n1 C;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录+ K5 ^; Y# f+ t# Q. V

, K( F  B9 a2 J5 |;;[
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]]
3 T" b4 B: D$ ?; Wtrade-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]
* E6 S& |; {% X' [3 k+ Pcredibility-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  o" a, y0 Q$ E" K5 p7 r
neighbor-total# M! a2 j8 L1 q8 b! `6 W: v$ ]
;;
记录该turtle的邻居节点的数目2 P7 w" {8 l3 _; e
trade-time
" C: U. |: _: R;;
当前发生交易的turtle的交易时间4 `# x( a& W) X$ \6 a  @
appraise-give% a6 t$ b: V" h7 ?+ c
;;
当前发生交易时给出的评价- g( S5 P0 B* u
appraise-receive3 R( S; q- |6 Y9 b* D
;;
当前发生交易时收到的评价
  G; N  Y- h3 `! Y, Nappraise-time
0 P) W; x, Z, [. l# I;;
当前发生交易时的评价时间2 E7 I& p0 K% Z, ~6 ^
local-reputation-now;;此次交易后相对于对方turtle的局部声誉4 a4 S" v  M" O& S
trade-times-total
* \; l, \0 R$ c! M2 J4 ?;;
与当前turtle的交易总次数
: @& `7 }5 p1 vtrade-money-total
  T. T8 Z  q- g- C  e;;
与当前turtle的交易总金额) S. S) k/ _/ e' n& C
local-reputation7 U$ n0 s  p$ P9 s
global-reputation/ u3 {% Q! `# I$ J  L  \
credibility  S8 c" l; z) @6 }
;;
评价可信度,每次交易后都需要更新
2 W' Q, B& K& T) r( O' Ecredibility-all
8 x6 y0 d6 q! K7 Z) h2 i;;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3 Z1 ]5 I9 V3 [3 p

& ^  {: e" k' @3 F6 ^7 ^;;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 P4 A- O' o9 n/ y2 T7 L+ |  n0 Ocredibility-one. F1 p( i# N! z% e  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
0 C+ B# b5 J3 d$ a# aglobal-proportion5 \" }' q  Q3 w7 N
customer. P" N0 b5 @; I- o& K1 Y+ T
customer-no
* q: M9 W2 ]" b0 Q# d- q8 @3 htrust-ok
1 i1 T6 Y; X9 R" [8 ~1 ptrade-record-one-len;;trade-record-one的长度
8 H. N  w/ o( l/ t]
3 i& E( u5 P- A- {* j8 {4 I/ F! R6 x+ r3 T: R0 |/ h
;;setup procedure' Q4 _$ T" [& O/ t, s7 r& U
  V0 l6 w1 e( |, e
to setup
6 S& |7 [7 c6 N5 ?) g0 E; B" R  W: F1 e2 n0 T' n
ca
  q+ C9 p, m( D1 Y, S0 Y

: s) A1 E2 l4 y6 Linitialize-settings

9 N! ]4 Z) ^0 v- K7 U* `% o! [; `
crt people [setup-turtles]

- }" c! K/ @7 I: G* n- e$ s  f
5 l: A) t+ m" y1 x" j: Wreset-timer

' n) k& j" C9 ]) a' m! V/ O
/ e7 S% o: E$ r+ R' u3 t0 C+ H# G$ ypoll-class
  {* f; U/ N# X. f3 g! K

& J- H8 W6 `7 t9 z9 `3 ssetup-plots
- a# w8 F3 |/ r7 S6 k- m
- {0 _9 e  p! @- Y
do-plots

% R$ u* g/ ]! W: x/ ~0 H1 i9 T) Jend
$ ~0 l' m9 e4 l# F
0 m: [: C4 |) U8 p" Dto initialize-settings$ v# u5 r; X: K2 v, @
6 q3 a1 F% W% a* r/ e( m3 ~8 r
set global-reputation-list []

- ^) F: K0 S3 b5 F- J+ V- n
7 A) E6 e% f; n! f6 U( m1 Iset credibility-list n-values people [0.5]

7 [( ]* w) Q7 Q4 t9 x9 |! P
5 K0 D8 i, @( J( F9 S. Z9 yset honest-service 0

7 }- y2 V& g! P# j& ^- I: [+ J: Z. N5 ^2 K! E, w4 ?+ V7 f
set unhonest-service 0
6 t3 T/ ~- P2 P; z. u: k
. d% Q: ]4 M: L$ W3 s
set oscillation 0

" }3 b: u6 @; u' v8 c! R$ g
- x4 n- I" B/ t' S& ?5 y+ [+ T" Gset rand-dynamic 0
* i5 y; f$ g) P1 Q- G
end& n9 h0 Z& \1 j3 h8 @- A) w7 p

; W7 K8 }4 t- ?  `to setup-turtles & b- S; S/ b8 e5 C
set shape "person"
3 P) D( o7 W! I' rsetxy random-xcor random-ycor
- Y4 Q5 u( Y6 h. X* zset trade-record-one []8 d+ X3 S/ w1 s* t

3 O4 m3 ~3 R9 ~  _% U* v6 yset trade-record-all n-values people [(list (? + 1) 0 0)]
- d9 L. T7 `1 ?; k
3 a4 F) {! y/ ?, o" W
set trade-record-current []
8 d% l3 S/ h8 r6 ]( T+ }& _, Bset credibility-receive []
1 Y: i1 U) {( z- [set local-reputation 0.5
( F; ?  h2 a3 {5 d$ K" j  a* Mset neighbor-total 07 I7 w5 O3 [6 p0 p  n4 [
set trade-times-total 0
2 {! q  f7 [& e$ Z( J/ g3 vset trade-money-total 04 C; X& D9 y1 r; K3 S
set customer nobody
# f. m2 u3 Q3 l% |set credibility-all n-values people [creat-credibility]5 Y! D, e3 ]# [( f$ o$ I9 C
set credibility n-values people [-1]
$ \1 b5 g* ~. T2 M2 Z( B/ sget-color
" N1 n% C% m( b/ u

4 ?. F" i- S! o" {4 jend% d7 R9 w# n& H
0 V" p4 Q; }% G3 U" D
to-report creat-credibility# F) l, Q" a$ ^0 v6 f6 p2 I& s
report n-values people [0.5]% i  G; c8 f5 H4 h) B6 U0 c
end
! r$ G. m0 t# u1 Y" Y9 @( x
  g7 E' n# W& z, X- lto setup-plots
0 L- m; b/ I* W" {2 y# t
6 e. t& p3 N5 y, ~set xmax 30
5 r1 R- G1 I: x; z
. x* u% R: I; B( E
set ymax 1.0

; b$ L0 d# x- D% t: _4 q5 n, N/ ]3 j3 t' R8 w# J
clear-all-plots

" e: _/ D' l7 E) ?; ^! h
! S$ w; V9 W  V5 P3 X  dsetup-plot1
- B- D3 D7 Z# @
7 V% C# c; Z3 T# J  p& p
setup-plot2

; _9 W/ ?7 E5 f0 p8 R, [4 h: ~" U/ U# _
setup-plot3
6 G% d( q: J& s' t
end
3 D# R2 l5 l. z, g" x
* j! P7 `6 ?2 [- K9 E  ~$ w;;run time procedures
, T) C  N4 V; R- j$ V) v7 V
7 }. h9 G: j4 M5 s$ X- y3 xto go
% {$ n+ q7 X) J
( s* L/ Q; F% q$ T9 K) b8 ?ask turtles [do-business]

. t& B( W, R: Z% a- Bend9 K* p0 H9 o* p4 W( s9 z% m1 x" I

4 a0 z4 Y8 W- T! Oto do-business
; _, j7 L6 [4 R0 A
" U6 a8 x% R: ~  y

( G. }0 n7 p4 F' f$ J1 Jrt random 360

% y' }. q% K6 F" h
+ G* A5 h2 I5 x$ cfd 1
+ {, V5 |  [2 m5 u
! b! R6 B  d; w+ S
ifelse(other turtles-here != nobody)[
9 G1 M- K3 F0 }" m
% h: O) `' C0 P6 u6 W) E1 J6 v: k
set customer one-of other turtles-here
5 l9 K$ b6 \% R& L

/ ^5 d! a# x5 U+ V7 s% P. I- B;; set [customer] of customer myself

: S% k+ h6 V  D& ?0 g$ c# h+ O" m! Q* p: Y) M
set [trade-record-one] of self item (([who] of customer) - 1)1 J  r, J+ Y! n% H7 Y
[trade-record-all]of self7 J3 W# a- s8 P# ~
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

" O2 u) h* |; {( S) }5 w, B5 U0 T' x3 N
set [trade-record-one] of customer item (([who] of self) - 1)
7 v2 q8 F2 \( _+ v) h+ V3 z[trade-record-all]of customer
* d, c7 {/ K' d. N: e

% [3 s9 }7 B* O+ iset [trade-record-one-len] of self length [trade-record-one] of self

9 f6 D( t; Q! \. H8 {8 j! E" C3 o% L: w5 Z$ m3 b
set trade-record-current( list (timer) (random money-upper-limit))

4 o' {6 [: O0 F+ Y2 J$ O& F, f: C* u
ask self [do-trust]6 D! |9 ^3 r6 f0 `( }2 G) D
;;
先求ij的信任度6 \) w5 ]0 \. `6 z2 `9 S' b

! H" e, @$ i# R) @8 y) N$ w  vif ([trust-ok] of self)$ W8 m/ v+ j& c6 b
;;
根据ij的信任度来决定是否与j进行交易[
+ E* s% H$ A5 P9 U4 nask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself% B5 D) u8 B. E6 ]3 G+ V

* ^) a8 w5 M+ j  K[

! X4 ?3 f8 C' r0 O7 N, o' W7 `- ^' P; _
do-trade
! h3 Y: j* {: x8 w' [$ t) i9 \
9 n4 ?+ d2 D1 W3 G
update-credibility-ijl
! b! Z. M+ N0 e' H# {4 N
: V1 C) I  x! O. y; z* O9 \
update-credibility-list, e, a# D4 c3 N/ Y1 T) q9 m; `4 ^

8 D* n" C  T$ z" q1 K0 D" h" p
* L$ K4 R! O. O8 {" rupdate-global-reputation-list

4 V4 b. f$ B$ z& Q; M
$ m2 q' |, U( J+ \, O+ v! O; opoll-class
& {5 A! {2 I; ]

# r4 j  m# y6 x! b/ S9 Nget-color
2 r4 x+ y( H7 g# q

, I+ P  R6 X% u% l]]
3 c2 k& E% {8 y  {, J8 T+ q
" C+ N, z- \2 @$ l;;
如果所得的信任度满足条件,则进行交易1 }8 M& f# E$ ~3 k! j$ o: f
5 E* a3 b* B) t8 \3 s6 b
[
4 d9 E0 S' k+ v* e

* @8 x! U4 D- ~9 srt random 360
* F/ S- t9 ~" Z, {! b% i- x
. p7 X4 c& ^5 n# W
fd 1

- T5 V* i8 p4 _) T/ C+ F2 {# X# Q5 m; ?* g  `2 `1 q
]

/ k4 |( R. M/ ^. C, z$ O. P5 Y
. d/ F( ~# m8 A& }end

  N$ G3 g" r, \% |
6 j. x. [/ ~0 y) V; L; kto do-trust 2 y0 r( j+ ^+ p- w7 m* c7 y' [  `
set trust-ok False3 s4 q6 a. n3 x7 Q7 |# }8 P
7 d  B% E# T$ }5 E: {8 G( ~! Z+ T
) k2 Z  k9 ~, p! f$ X, ^6 {
let max-trade-times 07 ]  b- n/ h7 R, X6 V6 \
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]% L- @: Y! c, t
let max-trade-money 0( T& X% N9 [$ c9 S  n2 I
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
2 v- m+ h8 _) h; ~3 ~3 u. I' slet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))/ b7 w9 r' U9 s1 r5 N. ~. N
( \4 ^' `& t7 u" \4 ?+ S

, l/ \: M# f5 s$ C, Wget-global-proportion2 H% `: F, I6 _! M( K
let trust-value
1 ^) @- m7 J: F  Plocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

$ R' Z# n$ m+ x' f$ U! r! Hif(trust-value > trade-trust-value)
7 {  [! Q/ ?* s" _0 i5 B' T. N+ R[set trust-ok true]
+ @& A3 U4 _- G( _+ j3 ?( o4 k/ d7 Tend3 i. B* v9 c8 [9 k

% V5 f& f5 }2 L9 [to get-global-proportion* _% x7 y4 e+ B9 H4 A. ?+ m
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
9 x4 o" z8 p& H. F9 C- N- O5 O* }/ N[set global-proportion 0]
" L( f1 c2 c$ q5 M+ i0 x: w[let i 01 Z( Y1 q  h. D" M% F
let sum-money 0
$ e# ?6 v9 L6 |( \: x9 Ewhile[ i < people]
- D2 T* e$ H* ?6 ^' c) U$ {[
# X' i' K# A3 hif( length (item i9 y9 W& p% R0 W. R; ~, ?& [
[trade-record-all] of customer) > 3 )
& @2 y. \* w" F" W! _$ G  K" Q/ y
[
8 G9 i8 x. K; iset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
) H0 h7 Q0 W+ c+ ]. T9 K8 d& ^]6 S5 h  p1 w1 O
]
2 u7 ]7 F3 p# xlet j 0% e3 M3 w3 c0 C& `, _9 R  U/ p" h
let note 0
$ p- g, U4 P1 E8 t# Wwhile[ j < people]
- D2 v* e. b, C4 T. J[2 }- ~! l( f; i* s! G
if( length (item i! u$ x2 s  G* I
[trade-record-all] of customer) > 3 )

5 H; b( t2 @5 ]( V( ]4 E' Q[3 Q6 a8 T3 R; h$ s  ~
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)5 \- e" F9 |& w% |' F& F9 U% c
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
  i4 X" C' h9 N8 S+ n! Q[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]. |3 p! l7 G2 h+ X3 Y
]; x- X6 o* ]" o$ a8 G: C
]
5 Y1 y" f& d& @0 h. S6 A; C% W. mset global-proportion note/ o7 _  O8 m( S) l
]
  U2 [+ H  ]0 [1 z& r* Kend- F( A* ]. p7 a$ z' z( e. L

' I% |. S! _. `- |0 p7 S7 pto do-trade( @) B2 C1 ]3 H. S" q5 i! E
;;
这个过程实际上是给双方作出评价的过程
* Y) e" @, r( J' zset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价; ~; I& q) S7 U6 R# ?' j
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
* c# f( K3 \! \) Bset trade-record-current lput(timer) trade-record-current
. N( f3 O- [- b: J;;
评价时间
; h" V  F  d3 {9 A' S) ?ask myself [6 P/ N' Z' }; n! s0 m7 X! a; G4 o
update-local-reputation; ^# t0 i6 x, u
set trade-record-current lput([local-reputation] of myself) trade-record-current
3 A0 W& E  C1 v* f]0 d) c; ]( |8 i
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself) h4 F6 l; K7 ]8 l
;;
将此次交易的记录加入到trade-record-one$ l3 n. E, \. r; {2 K. F+ u$ O
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)( m7 \! m7 T6 `
let note (item 2 trade-record-current )
7 ~( d- P/ f7 Q4 C- yset trade-record-current
+ Z6 X7 F* K0 {6 B! {6 |* V(replace-item 2 trade-record-current (item 3 trade-record-current))

' q- G9 u% J7 P% Z# G5 Mset trade-record-current
$ f# x- d7 c9 |" P- f6 X# o7 `' s(replace-item 3 trade-record-current note)
0 Y" e: \7 s6 m2 x, }  E" H* L
5 O/ A% w0 t% i* i- d

! N! t- u, _# v% v! c* `' |ask customer [
# K+ w( P2 [2 k/ u0 A5 Z7 `+ pupdate-local-reputation  Q, V0 {) j! j5 |/ M6 Q; _5 ]  W2 H
set trade-record-current
1 s/ H; q6 b! q# w% ?9 y% J8 U(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

$ w# A/ B5 I6 U! A]  ~+ F& O3 e4 b. e2 f( `/ T- D
4 b3 S$ @' c3 b; j
8 Q' F; s8 _  V
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
# U8 F& M% l% f* c  j# s" m

- N3 J! D" H8 M% Q3 F0 `( i7 zset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))" b' c: {, y, {( \8 h# r. g
;;
将此次交易的记录加入到customertrade-record-all/ f8 `/ i. c4 M" M# u
end
- N5 Q' e) A6 `! t1 W" w( q
5 I1 R. |0 }) q" \to update-local-reputation; o- T! A9 {5 [; V
set [trade-record-one-len] of myself length [trade-record-one] of myself& Y+ A5 E/ ?5 l' `- L0 f# x7 i
. y5 w8 @5 d9 d4 ~
6 k% T+ u1 N6 h9 `
;;if [trade-record-one-len] of myself > 3
& S$ O  _, }+ n* i7 p1 D
update-neighbor-total% J  t0 _, N$ l, Y
;;
更新邻居节点的数目,在此进行3 V5 g' w# A( N: g1 D0 F+ _$ I
let i 3* e6 y+ s$ S6 z- D( w- `& o
let sum-time 04 ^4 B2 g* E. {0 I3 \& Z+ n
while[i < [trade-record-one-len] of myself]4 S" l5 h9 C( Y& ]7 z6 ^& Z3 O
[" ~& g3 g/ Z/ r' ~: G
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
2 G$ S' U+ O) A, e. d0 l7 yset i/ F5 m4 j! p6 E: X" S" ?: I
( i + 1)
/ f1 c' x" Z1 r( v
]/ F  B& u. n6 \7 F: {. L
let j 38 {7 L3 I0 s- G7 J, Z
let sum-money 0
! _2 h, [- o# F4 C* Z/ N3 xwhile[j < [trade-record-one-len] of myself]$ w& @( I7 y& N& u0 ~4 e
[
; ^' R! E2 p7 ]! F6 i- D& H; p4 vset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
# \2 b# I. Y: B7 N% ^9 Lset j/ j: A9 f, g' s9 n& p$ q' g1 d- _
( j + 1)

$ |5 |* M3 `  t7 b6 {]
( c% r# e0 [" l* ]5 |% }let k 3
/ Z/ b2 r5 y+ R6 w1 ilet power 0! g* [3 A# Y1 \' \* n
let local 09 L. _" {6 e. @) [( H
while [k <[trade-record-one-len] of myself]
" j. @6 x) ?. y& X[
' a/ d2 w; v. v; P1 o5 g4 Vset 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) . S( _' h6 A9 o
set k (k + 1)+ M5 \9 n3 H0 ?& z
]
1 L; t2 G0 h8 U. ~set [local-reputation] of myself (local)
7 S4 H3 |4 {1 Fend
5 i/ C1 `- ?9 P3 y$ @: ^6 a7 {( k5 N; e' ?! S% p, C" D
to update-neighbor-total- |$ m0 G) L$ y2 A0 m
( Q" x: y  P  l& U" w
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]8 Z- h. l0 @6 H2 c% {* g8 v

* w, X- K) ^* Q' U# ]
$ L; L8 w2 A# K8 t& b9 G! S! t  L7 X
end3 T: ~" @, z/ }4 W5 G& @' ?( ?

4 {4 n9 U6 m  ~to update-credibility-ijl : v5 V( t" B; ^# b: }1 T
1 @) O) J/ y- ]3 ~
;;
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。( [4 k8 L' \# o! ~
let l 0( |( D( l0 L1 j' w
while[ l < people ]5 k- z3 Q& M0 c1 v5 E5 p' 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, D& ~, k  d  q' o" N! V* p
[
% L% F; C0 m& p0 p; d9 F2 qlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
. F* J: r& O& Y* C: X# @: Xif (trade-record-one-j-l-len > 3); v# {4 K+ w* c) a
[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- T, z& @( B- @- L$ }
let i 3
9 B! ^0 u  c. x' _+ Jlet sum-time 0# O& }( n. V* z( i
while[i < trade-record-one-len]7 J5 _& h4 K' |9 |
[7 {# V) v- Q5 b% m
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
% P( k0 W; C0 oset i7 p6 h' r4 z' G) X9 {9 n/ Y1 g
( i + 1)
% ]6 J- e& r2 K; f* {' W) B5 r
]3 K! B1 d4 _0 _6 h5 r
let credibility-i-j-l 0# |9 n$ s% `. h& j# Y, a" M
;;i
评价(jjl的评价)
$ Z( ^. [1 B! j* S) k5 F7 mlet j 3
; l9 g) H' B. g2 M8 _* E' T! t3 W7 xlet k 4
( \5 p) H# t$ X, ?) g( f) E- Wwhile[j < trade-record-one-len]4 r2 ?; o) e7 z+ d
[
/ C0 g: E9 V$ X# Y( A3 g) Ewhile [((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7 Y* d: p6 o3 n5 w3 w
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); ?5 |* S  ?! a& a9 R, ?( e3 L. q  ^; B
set j& f! l7 z! N9 P9 r7 j8 `" \1 K4 @
( j + 1)
2 Q5 ?, E/ @2 g. k) E7 ?  v9 g+ U
]
5 {, \6 w5 ]& l7 A- Gset [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 ))) H; d2 w; p/ d7 H
' S+ Z. K; z  E4 _/ I
3 v9 r: p$ h% s7 p6 g
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))" q+ P. O1 A& g2 ~% _' P: i" V
;;
及时更新il的评价质量的评价4 m0 b- d3 p6 \, o9 v( B5 {" v, ~
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
, b4 ^% N: C# x2 Q; M% j2 gset l (l + 1)! g# J% d: z8 }$ e/ I$ G
]! ?! o, t/ C$ H8 x1 p2 e
end$ L; C& E2 b6 }) j+ C9 ?
. z9 j, m4 X7 J0 n  e! H- q
to update-credibility-list7 e# q9 A4 T. p+ X
let i 0
& T/ `. E0 C, v! ^& {3 Awhile[i < people]; L2 c- Y1 u! Z. T5 Q! w. `5 c
[9 X" q8 R7 d: r2 v" Y$ Q3 N! _- J
let j 0
! }% s( N4 A: J: z# glet note 0# Z* @/ M1 x. J& D& n
let k 0# I$ X) L0 k+ G/ n1 h9 d
;;
计作出过评价的邻居节点的数目9 a: t2 h& J/ ^$ G! o1 m, `9 y; T/ [
while[j < people]
" z% A+ b" p$ s; K' e. V6 |[, V. k8 K% Z, y# @
if (item j( [credibility] of turtle (i + 1)) != -1)+ s( F( T* w/ j, ], q" `3 q
;;
判断是否给本turtle的评价质量做出过评价的节点
; O8 K; h+ }, G/ N) i' T' d6 {[set note (note + item j ([credibility]of turtle (i + 1)))
  o+ @& Y: `' H9 J. ^4 g% \;;*(exp (-(people - 2)))/(people - 2))]
9 R1 R. E+ |( N
set k (k + 1)
2 l/ X9 O' N6 J# ~]
& b! l" [# U% R8 b* G6 z5 ]set j (j + 1)- b0 q3 V& Y0 u8 a+ m. a9 o
]6 f4 ~6 h7 ?# ]7 Q
set note (note *(exp (- (1 / k)))/ k)
: E" t# H# w; W- s3 `' Bset credibility-list (replace-item i credibility-list note)  n; U  T# l2 }- K# _
set i (i + 1)+ L* G  p1 S4 ^; _- g0 ]
]% U7 A, D' a" ^3 C% r) Y" |& C
end, S$ C7 g5 O- o' n
1 u& u, a" \+ D  }# l# Z( H
to update-global-reputation-list
0 k8 s: R; E1 N& \* y7 O& ]let j 0
% _5 ~+ h5 m* Ewhile[j < people]
6 f7 j6 z# _6 W2 R/ d, |! ]7 g* Y1 |[
5 u4 R* j# U4 C* j! j4 dlet new 0+ n/ X8 Y5 C$ Y; W4 w+ P8 d
;;
暂存新的一个全局声誉
8 r$ y2 u; e+ i5 y7 R0 @* X: W* Glet i 00 \5 l" \' N2 k. G/ |
let sum-money 00 P  ^5 i1 M! ^' q
let credibility-money 0# Q: E, C3 d$ l4 E
while [i < people]- v. W; ?1 ?" H$ N' i
[
% R. U: Y" y: h! q. C/ e* l, }: \set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))). i: I! ^! l1 o( R9 }, Y8 y2 O, {
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)), ?  J, A0 {6 y  t- x- X( Y) [
set i (i + 1)
1 f6 M$ b) f5 R6 T5 ?' R: c]2 Y' L- f7 P4 c& p& m1 _4 I; p
let k 0
3 Q+ H- Z0 {  Y: c- m$ Olet new1 01 w+ }, a5 J" v3 l# t
while [k < people]- a. c' I# w! `1 }! J. M
[
4 [" G4 b7 R5 I# E. Bset 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)4 Y0 o- X: \) C
set k (k + 1)
) d5 z# f0 W1 ^) Q9 ], R9 m% n7 v2 Y]. }8 Z+ y  p# G) ~
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) : N" r! H3 ~+ O% T7 ^8 R% Q
set global-reputation-list (replace-item j global-reputation-list new)5 K; m1 N; p  q- D0 {/ t
set j (j + 1)
/ W6 r4 k/ e3 R. i$ N3 n. g]5 r. S: @3 m. v9 o
end
: Z' R5 f: A7 {( W3 c) R: {, h' z- m
2 x! y4 _- B. h9 L
& T4 h. s/ [4 t! q0 k# X9 s; [& p3 X! F
: o/ t* l9 q* U) ito get-color/ [. v# I/ Q+ V' g% l! G

; `$ l3 q0 |/ G+ L( S1 @! xset color blue

7 S, O7 l( R. |5 y8 X4 y: hend
5 X7 y( V( G6 p: J* k& `$ K, L2 z% T. d9 L
to poll-class
' B1 t+ l$ R8 L( j" D, e) Nend
& b; Y6 W( x: _* ]# u
, f) C0 M; w1 j9 g) ?* Kto setup-plot1* I) i+ J. A" r7 ~8 g1 C7 k. g

& o2 a, v3 E# O% o9 x) `set-current-plot "Trends-of-Local-reputation"

" r# S3 k* d$ M' E* p  P( ~% }. ~+ V
set-plot-x-range 0 xmax

8 K* d% o$ A4 q. @
  h8 n" @& `! `- J; ]8 v6 jset-plot-y-range 0.0 ymax
  p( w( ~! b0 t1 |0 U; m9 R2 `  x/ f
end: a; G1 k8 W+ n! B1 T. X) I' v$ c
; K$ x1 D% g. o  u, l! U$ P9 \. h
to setup-plot2: I9 X9 j( R+ b2 Z
- c! H4 I( _0 Q. l$ \
set-current-plot "Trends-of-global-reputation"

  |" j, u3 ^$ A3 f. F; u% S. R1 z+ y6 ^& D6 A; b$ ]
set-plot-x-range 0 xmax
5 V0 t* k' Y+ N4 n% F/ ^

9 J4 i+ q1 K4 dset-plot-y-range 0.0 ymax
2 A* n+ g- l' y; I: m9 u
end
* n- l5 }/ I; [+ i3 h/ l
6 \% x7 o3 ?4 }" R; `  G; T4 jto setup-plot3
3 y- P7 m( C4 c0 n
. d: h+ |; \) P4 x% P+ _- Pset-current-plot "Trends-of-credibility"
* n8 ]9 o* ?# R  `+ B
" Z8 k5 G, D- o' X" }9 M% O
set-plot-x-range 0 xmax

3 l- P# E1 J. [& p- v% B& a2 D1 H( F: R- X4 J
set-plot-y-range 0.0 ymax
$ X1 Y5 F( j, D5 h1 i* T
end5 B- K0 s, R) u3 ?, T  z2 h
& f/ f: U1 w( G' m- @# Y! H$ N" s
to do-plots
1 R2 l2 v: ^* T- ]# i) m% O/ U6 Y; uset-current-plot "Trends-of-Local-reputation"0 _+ r  k# E  |1 Y7 ^3 }9 }$ U
set-current-plot-pen "Honest service"( ^! V5 m; v; l3 y
end# ~# J$ x  |% l7 w2 g2 k% a0 w

4 t( U) F# {( C6 o) ?( D( W, C4 O[ 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.
& y! L6 K8 W% h% Q% E
3 i* _' F) P! }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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