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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:
: e, O% [! J& S1 hto do-business 9 j; s. G7 K- S+ I0 a! ^
rt random 3606 N, _, i" y( _. G& c
fd 1
5 y. q: Q# t4 B  Q$ S9 h: u8 f" B ifelse(other turtles-here != nobody)[
# G& d, M( O/ p8 M' E4 @' n2 H   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 X' B6 U# e- S% h: m
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
4 |' p* s% i0 c0 U   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
$ H9 U' f: \7 C, y3 n   set [trade-record-one-len] of self length [trade-record-one] of self
9 O/ L' J) I3 r( v& i8 ?. ~' o# g   set trade-record-current( list (timer) (random money-upper-limit))# _! j9 a( G& O9 \4 `, \) O$ z
4 d2 w; O% M# `! W; L
问题的提示如下:9 g8 a' i* |' z$ v: X" z) v  i

4 h/ W& s9 q: X+ ~& perror while turtle 50 running OF in procedure DO-BUSINESS
2 h% n$ Y! R0 A- E  p. L3 P  called by procedure GO
5 g% Z* }7 N; x  l) m' u. cOF expected input to be a turtle agentset or turtle but got NOBODY instead.0 F0 C; P+ T9 p+ R! e
(halted running of go)
. N) G) k3 G3 |$ O$ ]6 F% ?) e" z; Y( Z* J3 U# u9 h
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~~* |" _) P1 q5 F6 o% |9 o
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
% c4 N7 E1 Z' Y" D3 q0 a4 `globals[# s# a8 J: q* n7 j* w, l
xmax
- H+ s1 d% W' }% G! Iymax
+ ^8 I* I2 }2 c: Z, x% Y/ G. _9 Lglobal-reputation-list4 `" \# S+ U; @  C! u

3 e7 J! f8 o) d+ Y; p;;
每一个turtle的全局声誉都存在此LIST8 z- g: }; a( G, h7 Q' {2 \; k& K
credibility-list
# e# L4 K9 c: N$ j) @; P$ S;;
每一个turtle的评价可信度4 D9 {' G7 z0 e2 V6 Q0 B
honest-service
! K# L* E) R. B1 O) b7 dunhonest-service
; N% x: W$ ]& Z# E) Noscillation
& A, X7 _2 j, K/ D; Z$ q9 `rand-dynamic5 H( ]0 p0 K$ I# Y: J% M* H
]0 N+ b$ Q2 p) ]
) }9 m) N0 Q9 k
turtles-own[
: n9 {+ j0 R9 H2 d: V! R, r8 strade-record-all. J3 D8 Y! y4 J" D8 ^1 N
;;a list of lists,
trade-record-one组成
3 R8 v4 J8 A+ I% qtrade-record-one. D" C; [/ |$ Z/ n
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录- Y% S, ?" U% I0 {0 }: k1 a/ w

: h$ u" p' A6 D1 T, x1 };;[
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]]
2 v$ w: @: r! ^# j+ Ytrade-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 I# P, a! V0 s" ]
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: K7 `3 X. e* J* n
neighbor-total
% E& v' u2 s& [8 U/ F;;
记录该turtle的邻居节点的数目
6 j, x" ]7 Q, v* o' ?! ctrade-time( u  f# T" u4 @1 B  p
;;
当前发生交易的turtle的交易时间
8 J* ]$ a4 ]+ _appraise-give
7 ?! `/ y) c: z3 L;;
当前发生交易时给出的评价
$ U* |! Y  p' O# \9 ^$ Mappraise-receive% D, x; ~) r; P3 R3 w1 s4 }
;;
当前发生交易时收到的评价) h7 X% \  G4 B0 g* I2 i' R; J: J- R
appraise-time# |" s6 @3 J) ?
;;
当前发生交易时的评价时间7 k8 U$ g8 ]; N' F
local-reputation-now;;此次交易后相对于对方turtle的局部声誉9 s! E* v# ~4 i) ~
trade-times-total8 T" A/ R, X' L$ h
;;
与当前turtle的交易总次数
- L, }8 }" d. F6 \: Dtrade-money-total( [7 C5 }8 d" k3 A
;;
与当前turtle的交易总金额9 \  \$ r2 [' s5 }8 b3 m: @
local-reputation7 p% E; K; p, Q2 `/ N( h3 \: ]
global-reputation" ?! k: G% Y" I9 j+ _% Y( }* h" C) d
credibility' b0 B1 N1 s4 R& G' v1 D$ [
;;
评价可信度,每次交易后都需要更新6 F3 ?' k1 @; ~$ ]5 Z
credibility-all
/ }* T1 n6 |* L: q& m( d- [. X( y;;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
& ]: @: I7 R8 L/ E" o7 r& x4 {* L6 N1 U  [- Y' d
;;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0.58 _3 \0 c& K7 l% }4 o, I- Z
credibility-one3 N: b6 H1 a2 G. G* a
;;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
& K1 D/ {1 d! V* K4 Xglobal-proportion
, {; s" Z6 W: dcustomer1 @: I8 K& s. V2 _/ S6 v. G' }3 |
customer-no
4 k8 L' Y+ @. ]3 r. M+ o- K: Xtrust-ok. c* |( N3 y9 k& [
trade-record-one-len;;trade-record-one的长度; o' H) |. g6 b2 X
]( S$ r, H' W  J0 _
& A3 b4 a1 A4 i8 O
;;setup procedure. s6 m2 x" r+ Z+ [5 g) ^9 r

) e3 B! c( j! N8 D! ^( o4 rto setup8 K) q4 q. O* \& v! w; V9 N. P- ]
  ?6 c/ d% }% H4 v7 J
ca

' f7 W$ ]8 D1 p( h' T& }
8 ~0 O2 Z+ }* F$ Z4 ~7 pinitialize-settings
6 W7 m& i2 ~' L1 F4 k  ?5 a

/ o5 l# x2 v' ]1 R: r3 T! x1 Lcrt people [setup-turtles]

: r% g/ \: E1 o  ^& c
1 I4 K/ E4 J" l# K% P. k9 Mreset-timer

$ u& l# T9 E( |9 H) H9 |. ?3 T* [' x. m, A
poll-class
# a/ k6 w7 Q) K

; z. H# y) |- W; A3 [setup-plots

7 f, l% s1 X8 T+ q
  ~. w" K( [! i0 u- f" i4 [2 Ddo-plots
5 f) G  \: V& d0 r" {1 P
end
5 M7 d% k# Y* I+ {3 P8 f0 w5 p3 k8 u$ Y
to initialize-settings
$ s+ P0 _- z  N  D
7 V3 _0 a+ J+ {: I, D8 L3 zset global-reputation-list []

2 k/ H8 b: A: u0 Q
2 n0 w' I# P( D6 X6 o/ Q# Gset credibility-list n-values people [0.5]

5 n- m, E' w; X( d6 T. L; L4 O
! _+ |3 w4 F7 h# z" E! j" j) X* pset honest-service 0

2 W2 S; B( T3 m  t: C! Z. D- K8 w( S& ~2 z2 U
set unhonest-service 0
1 V' ^8 D  ]* C# n0 z. [6 }
* ?8 c8 V8 |, e
set oscillation 0
+ a" {6 i* |( ~1 w
. g( M5 z( H5 i/ t# @
set rand-dynamic 0
& ^: v1 y- z+ P# f; L% l# S3 o
end
( D; Y6 T. s3 W( E* U  v# |2 c: D0 g6 S: y4 \" t3 Q# u
to setup-turtles + A* e6 z9 t% @, [* `5 S9 @
set shape "person"# P2 L5 A$ n$ S0 ?! r
setxy random-xcor random-ycor
. I; i# l: |! B+ x  T& z) Vset trade-record-one []9 K6 Y/ B( T; J5 ]+ g" t

( s$ J# l7 Z0 H$ C  a* B, Z) X; vset trade-record-all n-values people [(list (? + 1) 0 0)] " V, Z* M  @7 X+ @. X

+ V- o8 t$ l  Q$ Q2 o# l  Tset trade-record-current [], b5 E1 Y* a9 @4 V4 u3 i7 z' g
set credibility-receive []
' A3 J4 k' t# \set local-reputation 0.5
2 j8 r9 a  J0 ~* h/ Oset neighbor-total 0
# a0 z0 P& H) v. W% q  ?6 |set trade-times-total 0
# M' o9 d! \0 J' wset trade-money-total 0
% o  X$ U" {) @, m: u. k+ ~set customer nobody
: F4 s9 t( P1 {  lset credibility-all n-values people [creat-credibility]3 Q0 ~0 [. k% [2 X  R; U
set credibility n-values people [-1]
+ x& `  `% U5 \" O* S% Iget-color* p" z; a- Q! \- E' H* x& h5 D
9 @* e& L  H& M' D
end, S! l' ^' x- |

, P5 F$ m1 k. L. Hto-report creat-credibility7 r; u- @1 E, D# h
report n-values people [0.5]
0 `) g; n+ [. ~* w/ }# cend
8 \- t) _; [- o! @4 {8 y/ j  {. j: L* I
to setup-plots
; V' |* W# a5 v$ V
; `$ P# F8 Z3 `set xmax 30

8 l8 d  j- k( X3 d1 B" a5 v8 r& [7 S( L9 a0 C% D
set ymax 1.0
. {" H( r  `# ^- M) w7 D* |6 S
' I4 L: Y) t* B! o, }) ~
clear-all-plots
% M. D: Z  g" F0 i
) U* m, Z. W1 [8 F
setup-plot1
5 z& o$ n2 q2 H$ j4 c
: F# z. A; J3 ^/ d' d
setup-plot2

3 _* c( v4 _: p, @) j
, Q. k$ r0 ?+ y1 n! m+ [/ _) j# t2 f$ Hsetup-plot3
5 R1 a! W  ]: a( J
end
8 ?2 ^- e( [( m& Y9 r
' V! k# T4 B" {9 R* v6 ?+ U;;run time procedures* x& F$ l, q7 o& d6 Q: A

3 P* K6 a& x/ Z( Qto go8 W: A# D3 c& O# B7 \, A  `1 w
" K0 O; Z; ]" g) f9 N- ~
ask turtles [do-business]
9 j( Y, e, V' ]5 X7 d% _
end6 P' \. w8 b) n& N- n

+ b9 I# n- ~. x$ @/ \to do-business + n( P' o' p5 l2 g* j8 K$ H" N
6 H5 y/ z1 V3 [/ E9 Y, X) Z! V
' Q$ N4 H- h4 k/ z
rt random 360

# _& {7 F- g% Z- A
$ C' T0 n& M7 j+ ~* n% ]! E. Z4 ^% B5 rfd 1
7 c  r2 O$ {  s1 N. S6 f* k# p# K

) @4 N3 m* {2 D- ^ifelse(other turtles-here != nobody)[
9 P$ Y0 W. {6 V& r9 @4 F! }2 w) h

/ D9 U* t' }: d3 y  M' Y, V1 Iset customer one-of other turtles-here
- k* ~/ J' D* ]0 \
( W7 ~5 _) k( v
;; set [customer] of customer myself

( R  Q* i8 P4 o( d2 k" y- K; m; r1 f9 N4 w( d1 e3 A
set [trade-record-one] of self item (([who] of customer) - 1), C" O8 y7 @- Y4 m2 S5 _+ u
[trade-record-all]of self
; [/ w9 h6 z- p5 j0 S;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
- o. _5 v5 A- X; o# n! I
& |* R  X+ J' d3 e, h( Q; j
set [trade-record-one] of customer item (([who] of self) - 1)
2 N6 W4 G- f7 b- u- |1 I1 C! |[trade-record-all]of customer

# ^- D8 a! p  p- ^0 J, Y. y- ~
set [trade-record-one-len] of self length [trade-record-one] of self
( I. `- G& N' r( C: [$ e1 M1 X

. S- r$ g% i3 v1 x/ c2 z' Eset trade-record-current( list (timer) (random money-upper-limit))

% f1 j2 ]1 H' @5 C) R/ P) V7 c( T; U1 A0 Z( ^- v3 \7 [
ask self [do-trust]
* Z: U6 Y5 W8 b, P2 };;
先求ij的信任度
* `0 X/ L' f" u- q. R7 z& @$ W4 d$ |1 s, T' p" S
if ([trust-ok] of self)* t) J7 |7 x8 E( _. S9 T* ?
;;
根据ij的信任度来决定是否与j进行交易[
- a( b7 a1 {4 o+ sask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself; F' ^, W) V% _: S# f
: q: \$ s# m! L" m2 |% I
[

( n& r; x9 Z- h8 N+ m' \; C8 F3 C* L; R
do-trade
: [8 e% c9 H6 C1 U  K! I: [
! `( W2 q2 f7 ~8 m' T6 W, l
update-credibility-ijl
; n* ]3 J( @- S6 j* j

2 X8 F6 S) q- q+ n0 e7 Xupdate-credibility-list
+ }% F. M0 S, T/ E
& ?' w1 s( p8 h

6 W' C9 J0 [3 c( H! |+ U8 ?0 lupdate-global-reputation-list

5 b' i& f) x' k+ o# S1 i2 n+ a3 \0 R+ A' O& ^
poll-class

: t7 x% s3 ?1 i
! X* J) R. W! s, V# a* c0 ^9 W. P; Gget-color
% P. Z" S* R! s* |" Q

4 K) \$ r: P) W; h& b& d]]
  k" [% v7 O6 Y6 v: i  T# ]. N( t+ A
;;
如果所得的信任度满足条件,则进行交易
4 w( c1 R1 |* C( {- A
1 f. u% H+ ~4 l( l- f- }5 x7 n1 {[
- s% h# d! r/ Y  L. a* q7 o
, j8 _) J* n( D
rt random 360
- n. g) g0 g; H9 p

' F6 J" P* i! A5 v. T* Bfd 1
' E  u" \( j0 M
- w; w; p/ }3 ^8 c) X1 S# Y/ s
]

1 @5 X" g% O, G  h1 j. G
4 {( A: \. D. @- d/ S! F+ {; [. Tend
" c$ {4 N% T6 q! [
# X0 A. C* [+ @+ O& @0 H9 ^/ C
to do-trust * g* z& ]0 @+ `
set trust-ok False0 \6 @5 l( t- b
' P- `, ^+ l! e! k
9 \7 `  k3 J; y3 T* P  z
let max-trade-times 0
7 X$ w. y/ K* s3 m4 Zforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
- [2 R8 U, b6 Klet max-trade-money 05 S) n2 j. P8 T: ?6 }! E
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
8 H7 o* T! g' p7 ilet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))2 j4 B* g, e0 v4 G! _  D! t

+ ?, |3 c1 B' ^" F1 m4 ~5 D& M

9 g; D' Y5 ^/ i; ]2 gget-global-proportion
4 Z3 `# \9 u2 ^+ @& }; X- W0 u) Blet trust-value: E) p$ o# g2 l. W
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)

: w/ A8 k: M  [1 R; m$ n( ]/ Fif(trust-value > trade-trust-value)
. Y2 k/ q7 b8 Z; _9 q[set trust-ok true]
- P8 L& k9 O+ xend! E* A3 j0 J1 M# `& h
9 w4 l, G6 a, E3 g) i& S+ F
to get-global-proportion
8 c8 O! }0 }' N8 J( Lifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)8 x. g/ N) @7 [1 l1 t9 F- I
[set global-proportion 0]
- o" I* M1 `$ o: W* w[let i 0
) N& i" `1 a1 f# f: Q# Rlet sum-money 0# l9 w! K& }; r. e. p1 U2 O# b
while[ i < people]' J5 r- J6 U) B$ S) Y6 e, S
[9 a+ s: f' P4 y% V- n2 Z5 c
if( length (item i
2 x7 U5 @  k, g3 A' n[trade-record-all] of customer) > 3 )

9 N5 a2 Z! x5 v. s. n( V[
) c8 V+ W3 G+ G' {set sum-money (sum-money + item 2(item i [trade-record-all] of myself))0 t  ]+ t( Y5 Z* A0 X" n7 l
]
8 x9 [* e) q" d/ I1 X0 y% ~]  K: p8 R" }; ]# @5 [& Z
let j 0
4 |- z6 d* K* v4 Ilet note 0- K* M4 W3 o5 ^4 C8 n
while[ j < people]
2 ~8 y5 S& u8 h" {- d9 L8 ]8 J[* Z/ Q% }0 p0 l  E4 ]/ c. C8 K9 v
if( length (item i
2 `$ Q' o+ i* e7 c[trade-record-all] of customer) > 3 )

% Y4 w$ D/ e! j- ?1 q[* T: C) q" X- L* h
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
( P+ Z$ z1 l3 u$ M, z) x9 U[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]5 s  A6 w! j2 @
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
" s: L) D0 _( E! M# X$ Q# ^" L]
( h  c8 l" Y2 c% B7 P]4 ]" [2 t/ x5 d* B
set global-proportion note
! ?( ~" R! r% w1 Y5 |; \]
& G" T, U" E9 c/ `end
6 F& `5 J. }' Z4 v; T3 Z9 ?! ^, A3 \# L9 y! d: L8 P9 E& P. \
to do-trade
6 X9 I- n. M: P" B/ f;;
这个过程实际上是给双方作出评价的过程
" v. u% k! L: R3 {0 k+ n, xset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
* v, R; p4 J% K8 t5 \) Vset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价/ e; L+ y0 \& H4 X* L
set trade-record-current lput(timer) trade-record-current5 x4 i# `2 y4 @( o1 k
;;
评价时间
7 s( c0 m% V* m9 kask myself [
6 t0 @# `4 b0 ?$ W2 [update-local-reputation, R% H7 e3 A& b& q
set trade-record-current lput([local-reputation] of myself) trade-record-current( A) j& B; K6 e
]" p$ B# r7 c1 m0 Y7 X5 S$ ~* J
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
1 U3 v$ O9 H  B;;
将此次交易的记录加入到trade-record-one
/ R' x- _  _! v; t# Dset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
* D. ]( K1 [& a2 V0 \let note (item 2 trade-record-current )
& i$ l( r+ ?7 S; Uset trade-record-current3 v/ H3 L1 `3 L& d7 }3 w' p6 v
(replace-item 2 trade-record-current (item 3 trade-record-current))
; m8 V: s) h5 U  g! p3 j
set trade-record-current  Q8 n% q0 [$ D- @/ b: u# j
(replace-item 3 trade-record-current note)
# L. z2 u$ o' h+ `
" V- d7 p7 J8 [) R! j4 \
2 ~2 Y2 N: H. z+ d; E1 G
ask customer [
: m( M9 t- w( c0 l, nupdate-local-reputation
$ r/ E. D5 l; Xset trade-record-current1 t) w+ w: m( ^7 g3 @1 u; v
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

& k4 `9 {* h$ g+ l) y]
% K# T7 m" G1 G7 d* ~( u( m) F' Z# D. Z

" h9 a- g, n/ w6 Iset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer' N- q6 v4 @3 Q6 L
, ~1 ?8 y& R) O* r! e
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
5 Z, h0 _4 V* L# l# u;;
将此次交易的记录加入到customertrade-record-all
: S1 d3 {: Y& ~( oend1 x. Q% H. Z# x) N9 q6 n/ Y" I% j

: J3 U7 T8 T0 T0 t6 Wto update-local-reputation$ f* ^) a; E, t) V9 Z
set [trade-record-one-len] of myself length [trade-record-one] of myself% O/ c- n, g7 ?0 f
0 a$ E2 {0 K  z# b* ]  P. R# N
; v+ M% Z9 }+ w/ S" l8 _9 g
;;if [trade-record-one-len] of myself > 3

$ s' f: r6 t; h7 ?0 f# b8 J* b0 Y4 Dupdate-neighbor-total7 B$ z. U+ A) E7 T6 q
;;
更新邻居节点的数目,在此进行
% `/ u  C9 R7 Z, xlet i 3
* P2 m9 @. }0 R( S" o6 ulet sum-time 07 x* g* M( F" B9 g, p9 W5 m
while[i < [trade-record-one-len] of myself]
& i; x5 ~7 {& L& p9 P! ?9 e[0 [1 o* M) g" ?+ S
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
* F; N* T& K+ r4 uset i
' m8 c1 o' O8 U! Q2 s( i + 1)

+ D; i2 [& H) s]
% v9 D! q( [  G- e6 K" u0 \let j 3
! r% D2 ?. E, Y6 G" f  T0 ilet sum-money 0: ?' f1 }. X: ]. S/ I( u* [
while[j < [trade-record-one-len] of myself]
& @& F9 e% B7 j% f4 I% c[
1 g. K* \" R# m+ sset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
3 r" h$ @# @% P8 A( kset j0 g! v* |. m+ ^! Y* {
( j + 1)
4 e- J. u7 Q" L5 q* R
]
) D4 A0 U6 a! f+ i( {/ Klet k 3
/ D9 O$ |, D) m+ h& {let power 0+ l" U; a# {0 S. r+ g# F1 h# O- I
let local 0
3 y0 s+ O- D' i$ I$ ^/ L" s# hwhile [k <[trade-record-one-len] of myself]
( \! ^. k) c& I[
, M7 e7 \8 G* fset 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)
' |, C3 T. z+ p# O! iset k (k + 1)
, d8 x2 |, T$ s. i5 g]
& n+ P6 [- {* a7 ?+ W  R* eset [local-reputation] of myself (local)
0 Q+ T4 l5 C$ d" \- qend
6 N( B" q( [  M. r
6 [$ r6 ?- O5 q4 bto update-neighbor-total# z3 r* z5 |& N+ E/ L4 [) X. \

" v) e. ?0 X  g) X% S- Gif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]/ q0 x7 U1 c0 `' `" T  F6 Z, y
; u. m& K/ R7 r7 F# H
' f+ b$ d6 |& T- b" S2 m" }
end) T8 J( _; }/ v5 [
3 m2 B# Q9 r" B" |# z( X
to update-credibility-ijl
" {- l8 F% G( a  u+ z1 D- v; k% F* y* F
;;
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。* U: I4 h4 t7 E1 g; |6 {7 F
let l 0
* X1 u  ]0 s' v: O; Nwhile[ l < people ]
  m# f! z  T9 n; ~6 b;;
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 p) Y. c/ x0 X% K
[5 G" D* G% u8 t% n! r  `9 [" Z
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)3 x& _' N3 P$ E& K
if (trade-record-one-j-l-len > 3)
( _$ \$ p/ y9 v* }8 S4 X' J4 T5 G[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-one2 t+ }+ I' `/ u3 d2 T4 s
let i 33 k3 L% t/ e# z7 \) j. \) k
let sum-time 0
) n; F: s3 L! X- X( J$ Y' {4 K  pwhile[i < trade-record-one-len]' Y. T# R% p. b6 z4 {9 B
[
! ]6 O) M& t& }5 s9 o4 D/ cset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
1 p7 ]- V) G6 m3 k  v) n' ?$ v( J4 rset i
. G$ K- Q& h% _$ {  y7 N9 X6 b  V2 Q( i + 1)

4 q4 t" K3 ~3 a8 ?" V0 h; S" Z$ M], ~, n: _) M& I" r5 F
let credibility-i-j-l 0
% {  h& m, v) Q% x7 c' t3 E;;i
评价(jjl的评价)
4 J4 a4 k! |; U: M8 o2 W; @- Wlet j 39 b; l0 {6 @% T0 |; B2 l
let k 4' Q2 H" X6 Y6 N. T
while[j < trade-record-one-len]  W+ `9 u$ D7 A" u6 ~& X" l/ Y
[
' f* L5 `, c4 I7 r  c" A8 W  rwhile [((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
4 b2 A; F, a# q6 M' h: U& F8 \+ _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)
, t/ R% ]5 F8 P; Wset j. M' M0 Q. Q+ N! R2 g, s  k
( j + 1)
  t+ l" a4 N  {, K* P8 p
]
  C, E; Y5 x% r$ c* P. Uset [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 ))& o6 B$ F: ^: C  Z# O# v

# Q' T; ^2 T/ M" n3 b8 N

7 D% x$ w  i- f' ~& ^let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))6 e! S" R& Q8 B* K' R+ U7 W. V
;;
及时更新il的评价质量的评价' H9 }, G7 J+ N3 s* I: K3 L
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]5 @  J, Q* E$ b9 x2 J
set l (l + 1)
! L# |2 B0 ]% N! w4 h" j  ]' k]
9 w7 B9 U! Z, z! k9 [end
' d% W' b* M6 ^8 r9 r% N' o& j) i" u
to update-credibility-list/ S2 R, `6 `1 ^/ j- h6 g* E
let i 0
# ?/ q* [" e4 C! V6 m1 Y* |$ L# }, vwhile[i < people]3 X. Z+ D- D- J6 C
[0 b" G; W2 H2 m( x
let j 0
+ @1 ~+ X: r  R+ u8 x, {, Clet note 0) ~: `3 F' Y- s0 m
let k 0
" o( v0 E6 }( v;;
计作出过评价的邻居节点的数目
2 V8 A# U1 v9 P8 }. o" K5 ?1 Nwhile[j < people]
  ^( e6 a" N' y# I3 U' A[3 t$ ?. f* g% T9 o3 x
if (item j( [credibility] of turtle (i + 1)) != -1)5 j7 t' q0 d4 z% X
;;
判断是否给本turtle的评价质量做出过评价的节点, Z+ Q! _# M, q6 L
[set note (note + item j ([credibility]of turtle (i + 1))): G+ P! J& T" m- h( |
;;*(exp (-(people - 2)))/(people - 2))]
5 u. X6 C0 d7 f. I
set k (k + 1)
) u7 C  @; k' s8 D3 a) b9 W]; F# n5 P- Q6 H4 D; a( o4 G* L/ K" t4 z
set j (j + 1); |- o4 f! Y8 [! Q7 U/ E
]- W3 M& N0 A7 V* f6 o8 g5 n4 `
set note (note *(exp (- (1 / k)))/ k)' M4 f' w: [( z% J" k% H# e
set credibility-list (replace-item i credibility-list note)
6 ?5 q7 }% j, w( h! rset i (i + 1), t! F* y8 o$ E" W
]2 Q) F( j' n# I) V' F3 m9 A
end1 ^4 W( T: \5 m5 Y) \: W  K

6 G$ E" c/ ]( wto update-global-reputation-list% a( C2 N, v3 D: w; P0 \
let j 0- K! Z/ \/ o3 l  F
while[j < people]/ J3 u4 A) m5 F6 u  s5 U
[2 `& J# U, `* Y$ U
let new 0
) e; H2 B+ d" [6 {) l& z* b( q  u;;
暂存新的一个全局声誉& ~. f3 y6 E* C; E# n# c
let i 0
/ ]/ }9 o) h7 m, Q' |let sum-money 0
. A& }/ r" q5 v- ~let credibility-money 0% b/ Z0 m5 i; M& z2 n8 r
while [i < people]
6 T! z, Y; Z/ Y! Q4 D2 k* f[; H, [2 V2 U+ Q$ I- ^
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
4 _3 [, i8 j; U" K* yset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
9 u( x0 f# O2 ]5 A: |8 bset i (i + 1)/ V. S  A8 [2 L) {; G9 k/ u6 u% k
]( j& V# [2 |) }
let k 0/ W9 E; \; ?& D' H3 y
let new1 0
$ \1 {& b5 l1 G% O( ^while [k < people]: V( x- G. O# J; k
[
6 ~1 A! u( s3 Wset 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)
) |: o' I  a7 W7 n8 |0 Sset k (k + 1)
7 R: X8 |0 Q0 N. F" G3 U7 b]
& q- _+ G4 ]( n1 |' pset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) & z, b* g0 X* w2 @! l4 y
set global-reputation-list (replace-item j global-reputation-list new)
! v: C1 p3 G6 T7 x+ u3 hset j (j + 1)) M( d1 u5 @+ z
], T* `1 F' k$ Y2 [% a( z% l
end" g1 j4 Q) j9 P1 |( q5 b: e  p

# m$ b( ]  E2 O! L' g7 H) U* U! i. s* u1 V. R5 Y
: t$ o* H, e/ _! U+ s2 n
to get-color. P& E, l5 `$ N3 q" R
. S9 Z/ k8 f7 T* [3 o- Z
set color blue

* N8 `- v; A" w- D, x* kend1 V( H0 J+ h% l4 o" k/ I

) N9 k" @1 N1 V/ O8 u8 Kto poll-class
/ w# f* @- n4 p# Q7 \end
; R8 f; Q& R& \1 m0 {) m  w6 }1 X" ^7 {! f
to setup-plot1
1 w& ?5 i1 h5 w) A" P* ~& m# w  d! d/ L" `4 O
set-current-plot "Trends-of-Local-reputation"

4 m& q& k4 ]" ?% e! V- G4 j) ^8 _: D$ _8 G; o
set-plot-x-range 0 xmax
: w8 q6 T  S3 }" n& N

1 g9 D( n/ N% @$ F5 s  Aset-plot-y-range 0.0 ymax
, v7 B, f& J2 k9 @' z) {& ^
end" Z; r1 U  e4 s+ Y

' W9 y1 D$ L& z* p1 {to setup-plot2
1 n7 ^+ E% H1 q, |# ~
/ R9 g0 A( {% B# {set-current-plot "Trends-of-global-reputation"

  V- x# y; ~9 F) e; i
6 I3 d* ^: |8 yset-plot-x-range 0 xmax
/ ?' L" S0 }; [# S" z! m# ?- ]

. \9 m4 c/ n5 D3 v6 g5 Kset-plot-y-range 0.0 ymax
2 K+ ]) ]$ {9 I0 k4 {: J% l
end+ j4 _5 W7 P( Z/ _

4 i- P( E# U5 v% p$ wto setup-plot3) E6 g, B" M0 G3 T
! f' H4 q0 Q. [; Y' F5 w
set-current-plot "Trends-of-credibility"
! e  _) H" @, Z/ v# N/ O4 }- ?
) g0 F( [+ P6 L: C- j! N9 i
set-plot-x-range 0 xmax
& P6 H' S- g* i6 z

9 h5 \' y8 o" S0 h3 vset-plot-y-range 0.0 ymax

6 E- A' T6 w& h" Pend
! ~, H9 A4 X' Z5 B/ G( W. A. p. `9 H" ~1 w" p  q! w- _% ~
to do-plots6 m7 q4 z8 {2 u4 \3 w+ ^- A
set-current-plot "Trends-of-Local-reputation"+ X1 n8 ]$ I3 u: X5 A; L% c# Y
set-current-plot-pen "Honest service"
9 W+ _" {3 h: P- `# xend4 N/ A8 X& R6 z* z/ x

: v4 i5 D. t& P, H; D2 p( X- V) r[ 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.
2 b5 G( v4 I# m, o5 h% V2 J% p# C5 l9 D% N9 g
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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