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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:
! B& B* v, n; [! Y: {1 E) b9 M* ]; Jto do-business
( |3 Z/ R' M, H* G+ s rt random 360
4 t9 x, F0 w( X9 W2 a2 p$ J8 ? fd 1- j% D& h$ `* q+ _; L; o3 a& L' ~
ifelse(other turtles-here != nobody)[! d) Y# H) {6 @% 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.! [# b7 N) `" q/ h6 ?
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
2 r' L( v/ J* ~! H4 W9 M   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer& i% Y, Q& t# P  q1 P
   set [trade-record-one-len] of self length [trade-record-one] of self3 \# p6 c# j& _1 o. i9 h7 t. N
   set trade-record-current( list (timer) (random money-upper-limit))+ w* T7 q$ Z0 P6 G9 \
3 Y/ l; j) o, g' s
问题的提示如下:& v) [, B" B' L0 n( l3 t1 o! P
3 Q4 t0 ~8 ?6 b( ^2 d
error while turtle 50 running OF in procedure DO-BUSINESS
. v4 {6 d+ ~1 E  called by procedure GO4 b6 x+ F$ J4 y7 i' F* @
OF expected input to be a turtle agentset or turtle but got NOBODY instead.* y0 |( d$ q! t
(halted running of go)2 a* [7 j, J; Y( I" h, X1 V5 s2 h  N
# I, `8 ?$ f  X# j! j6 N
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- S/ n4 k. S" ~3 o" 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3 Z' X/ v) Q: l/ w+ t* _! X
globals[
8 z* W) {: Q$ C9 `3 x5 N+ k& wxmax8 D1 w/ t7 j3 N* l, F
ymax
* Y+ y- p: S) R) _1 Bglobal-reputation-list
3 r# W" N- N) v  l. M( ^& B: M: C; y; J* J- Y3 X( I
;;
每一个turtle的全局声誉都存在此LIST
7 H! w! P+ g. t8 ^" Qcredibility-list
8 t$ q' y* u; G+ W& Q1 R6 a2 u;;
每一个turtle的评价可信度, f$ l: {: B# D( I3 I. \9 N
honest-service
3 G+ Z0 b/ `' e. Z6 [unhonest-service4 m# {6 q, K- t: Q9 y, M
oscillation
5 ~5 d  T* L# H7 B5 e" Drand-dynamic, Y1 e2 h! w- \: \0 U# x' Z% b
]- s  J$ \4 \; P% p6 t; {7 M
! y& D! K  ]  m9 F. @( M
turtles-own[& |' @. T  y8 Y4 V: M" R. |% r
trade-record-all2 L4 ~. ?3 x6 m9 W3 f( s$ X
;;a list of lists,
trade-record-one组成
" L8 _$ E7 V$ `2 B3 O0 v+ vtrade-record-one* [( t0 W  X1 Q  I. X
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
1 k: r" m  X/ i% o9 `& o
; b+ C* o+ h& G& 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]]
/ M' r7 F  _$ |0 c' N' {. Mtrade-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]
- h6 I; b1 R! Z% d* l7 Icredibility-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
! d6 N- c. L6 t) |* {. S1 n9 x# Fneighbor-total
/ ^0 m; W3 q$ w* d;;
记录该turtle的邻居节点的数目9 J  ?9 @/ w+ ]2 o$ N
trade-time2 Z) D3 q; c* d2 n9 a5 a. m0 P5 v
;;
当前发生交易的turtle的交易时间
4 G( Z, x" y" B* Gappraise-give
0 P* R# f% {3 S% O0 Q: N7 [;;
当前发生交易时给出的评价
& ?& y% S2 c8 T; g- y: iappraise-receive- k$ B8 D5 _9 v# R. X3 a6 u
;;
当前发生交易时收到的评价+ y/ Y0 x- x) E$ W" ]
appraise-time
" @- l4 F5 ~( q0 ^3 r' m/ D;;
当前发生交易时的评价时间
4 p: c9 }4 S' x1 r# O6 d' c8 Dlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉+ c6 L, T5 a" _! J* m
trade-times-total
- L  i. P' U4 `! W9 t4 a" I;;
与当前turtle的交易总次数' p% ?: a  E7 Q: L0 `8 i
trade-money-total& R/ _" K. K  c/ m
;;
与当前turtle的交易总金额7 b6 f0 F$ z- u, \% C9 t* B  t* k& A
local-reputation
/ f7 N7 G; Q: k. r2 Q, t1 z8 Vglobal-reputation
, R; \( A3 ^7 j1 pcredibility, F/ |8 [6 K; e+ j$ P
;;
评价可信度,每次交易后都需要更新' t8 C* x4 v7 B! S8 L
credibility-all
/ g) D% U4 n& {0 };;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
0 X+ h/ q$ @( g5 \7 C! e2 I+ i# y5 C7 @$ N+ B3 {  l6 ?1 T2 _% }
;;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
, s. q* s+ n5 D8 D0 Scredibility-one
7 k% Z* ^* l6 i/ I! M$ |% I;;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
! w- Q1 f+ F7 K4 b! W. ^4 ?global-proportion3 t% X+ x0 Z1 d2 Z& D
customer
) v9 v0 I" ]1 v/ k0 vcustomer-no2 F& j5 \" F# _0 t6 {! ~
trust-ok
$ `" T( V$ S; m5 N8 X% j9 strade-record-one-len;;trade-record-one的长度6 c# x2 T2 k* [2 ]
]
7 x' F5 J. t! Z/ h
( }# O1 ^( P4 ]7 F/ Z; Y& z;;setup procedure2 ?. N( O5 ], \" y

% M3 ~8 M- W- g! Ato setup) b/ s8 h2 s4 t1 p4 ^
8 K! h- N% Z. s! s! m0 k0 W& a5 z
ca

1 o3 z: D8 S8 J9 _# Q- r3 c* x: d8 r/ a+ H7 w- H
initialize-settings

+ H8 P2 h8 [/ ?( S* o, L8 c3 r& ]- t8 J9 Z9 i  D' f
crt people [setup-turtles]

6 L4 k# M$ U% v% a  }% ?" k- i
% a, A! @7 h5 N, hreset-timer

# f  b" M9 _& D/ O* x; t/ m# c1 G, C4 N5 o+ \6 }5 T
poll-class
8 T( O' P6 Q9 q5 L2 J
6 l' E3 M$ r: f
setup-plots

8 x" h) q8 `7 F+ q4 }
, v: g( T( \3 [$ U+ Z& z1 edo-plots

/ g# n+ k5 O1 S. D9 @end
. j- l' x% o. a5 W6 o! u6 N
& X/ f1 n+ ]1 I; Hto initialize-settings
8 e/ e" J- K8 I: v$ X
2 E) B9 I3 E0 [; `set global-reputation-list []

- I; N. ^6 S5 D+ K+ M; b( }7 |8 j& J
! Y& P+ }; q' ]set credibility-list n-values people [0.5]
) ^3 y+ J% c2 b* V2 O
; p" q* [& _! Z3 f' E3 Q
set honest-service 0
; b. F2 V+ f7 A: E+ {) `/ o- x
$ E9 r! n$ h& h; b
set unhonest-service 0

6 \8 G+ e: Z5 g* J+ b; ~/ F( D7 E& S' a
set oscillation 0
+ U0 T) U& ^' i( \" x( l

% y6 B6 v1 K* Yset rand-dynamic 0

9 _! i( C* `1 L& W9 vend
) W4 s  n; z/ j+ p1 N3 F5 C( W6 h- ]% |
to setup-turtles % E# n9 C% b& ?- u7 l
set shape "person"
) d) l5 t0 L( i; ]0 zsetxy random-xcor random-ycor$ X- n+ y1 w: u0 O3 E
set trade-record-one []
# I" f, ]3 ^! ?/ X! b3 k
" H( x- @& ], j' l
set trade-record-all n-values people [(list (? + 1) 0 0)] ' {$ G" X! T7 @7 b( y
- O+ ]" W  D+ l. D; _
set trade-record-current []8 N, g( @  C/ f, d( a
set credibility-receive []; _6 w  p0 U6 S# Q* i# `
set local-reputation 0.5
, F' D+ |* T1 b. \; p# s! k  {set neighbor-total 0
4 `% U' ^/ p: V1 z2 Q, Mset trade-times-total 0- I5 Z$ a: ?# y0 G. H0 h
set trade-money-total 0. C. T% l4 d# y2 A+ \/ P
set customer nobody% @+ C2 X) P4 Y
set credibility-all n-values people [creat-credibility]& g. p- `& f( _1 T
set credibility n-values people [-1]
! ^5 U- y- \3 s0 c  ?get-color
3 ~6 }7 w  o1 o8 e3 E
  n* }) A, k% _( H- \8 a: x% A; m/ x
end
7 k* R6 \8 Q% S0 x% D; l) n2 V8 X- S$ P8 S2 O0 ~3 e, l
to-report creat-credibility) I/ E3 [' Z1 L( [8 u; O& x' l' S
report n-values people [0.5]5 r  l# r" \$ L; L
end
6 Z( q. ^# Z# O9 p- s% E5 ^0 I
" i1 M9 T7 k# q1 |8 Q1 Pto setup-plots
6 ^' f% F* M# |. N+ i  S2 }* i+ \& a% _9 G2 Y1 B5 p
set xmax 30

7 G- u+ l1 v6 S) k+ a( ~' A: v  \: z
set ymax 1.0
& o& t, C' s2 A" T  |8 {+ n6 C
" p% H, I% E/ |4 s+ }
clear-all-plots
8 k! v* `- A3 j" ?9 C
  m  g1 i' `* C; U5 \( u
setup-plot1
4 Y' ]( T5 A- O$ T% h
$ g2 ]) G6 i5 }
setup-plot2
& I; z4 k( F9 ?3 a$ g
9 |& D/ I3 b8 |  }1 X
setup-plot3
0 n" R% c. j. e, L* Z& E+ X+ l
end
8 k* S0 Y$ B' V( s  k
, l# B% \7 c1 k7 M6 f( n;;run time procedures
' k8 T0 E; ~' _& Z, M. |
/ J! p: y! O! Y" @, B& m! y2 Uto go; `  X  {- _4 \

! V6 K' e! z! U$ Y7 r! X7 Kask turtles [do-business]
- q, I  O! l5 Z$ Y9 C/ [! M
end
) H# O& ?& l3 e4 g
8 [2 {: f4 C0 F& P* e9 Y+ q0 |$ I0 [to do-business ! r6 H1 s% V7 S2 n5 S) m
, |  i. x' [6 U0 U5 p
1 |, n! z0 S% e" g& T  O  u1 L
rt random 360

2 Y/ c. g! v" O- r+ q8 X# E( t8 `3 z' D# h, S
fd 1
, {9 P! U8 l6 `* ]; n0 B# V# K* l

$ q' i+ `* Q; t9 g9 E" k( [ifelse(other turtles-here != nobody)[

! z7 _/ ^; t; i# s
8 [+ h# q$ d. d, w/ w# eset customer one-of other turtles-here

$ {8 ?( T* n. i" V2 Q( W7 w! Q; [4 m1 }5 p: _
;; set [customer] of customer myself
, \$ V* C0 L- i: j0 z- z1 X

5 K+ U. C' x$ Cset [trade-record-one] of self item (([who] of customer) - 1)
) |1 \/ M# i/ |) _* U. U" N[trade-record-all]of self3 V+ H/ j2 ?+ ~+ z
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
6 T1 Q4 C3 \, K

; z  m" G, r& l1 u. D/ aset [trade-record-one] of customer item (([who] of self) - 1)
* T# L2 i$ [: z" N2 _) z[trade-record-all]of customer

- A. ?/ u+ e, g: j1 \8 ?' U6 y" M; \8 J" ^; M
set [trade-record-one-len] of self length [trade-record-one] of self
: w1 [3 c/ T, }$ ^
$ n. N( ~* P* e9 J
set trade-record-current( list (timer) (random money-upper-limit))
3 J$ _+ v5 D! Z2 j/ P
( w3 q" ~% s7 ~( i9 F/ x
ask self [do-trust]' {$ P, h, N/ S( K& a' z2 V
;;
先求ij的信任度
4 c9 {7 z1 y- B* [+ y7 K! u; y
' m) {8 d$ ^. Yif ([trust-ok] of self), P6 |# x5 `) B
;;
根据ij的信任度来决定是否与j进行交易[
. n$ a! z2 ]& q$ o3 M, |ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
" h' P( A2 J9 @! \4 }+ H6 ?, n" R+ ~4 G1 y( o) M+ X
[

# q5 F" |  p, g! g
" ?" |4 g  [0 t' f- o$ X% edo-trade

3 I  E) {) c, K+ c3 Q1 T3 n' g7 [3 a( Y
update-credibility-ijl

" q; t& I: O$ L5 H
6 n( |' [1 o+ N; Hupdate-credibility-list: w2 v  G' u& N0 D' }& v

0 P$ z: z2 D: Q' s$ Y$ c8 O+ c: \- o4 a
update-global-reputation-list
: X; G& y- x& r; ]) R6 f( F

( d9 L  H# f3 r4 E; M# c: A7 j, upoll-class

8 j7 t% D$ ?4 j$ F# y0 r+ m; E+ D# S/ p- ^
get-color

! q6 q* Z- n- M1 e% d2 U6 N" f; l' t( l5 q; X% v% Q. b
]]
; w* }+ K! `. U" s3 N3 J7 ^' a- M+ h7 q
;;
如果所得的信任度满足条件,则进行交易* F" Z: ^# ^/ I2 v$ Q3 N  t! x+ Z# b  a
0 f6 ^6 A, x3 R
[
6 ]5 {' \! Y8 _6 V2 b0 Q

7 K. T5 R7 V8 J8 P6 Rrt random 360

. d4 M. w- ^2 S/ L$ A9 X- x2 K! Z; l$ ~- R! f) N. t
fd 1
, G9 d4 a" R) I$ y4 Z% \
4 Q3 U( I; a5 N" T6 U2 F
]

; v6 {6 i+ k, F: b) Q8 r
, `! r+ L( W4 t: Cend

) N" V  M. l7 S& y3 g: S
0 a0 J! T. s( ^to do-trust
4 ]( P; \7 \- X- @& }( Gset trust-ok False+ h5 e. B* {5 x
  Q( H+ \( }) I0 ?
3 I; X6 t3 _3 \4 n) t
let max-trade-times 0
" O" t8 \0 F* m- s3 l5 L* p" Gforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
6 a/ b, L: {6 llet max-trade-money 0$ l* w* N, u  ?" t$ p! K
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]], p& e+ U& z& Y! u
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)); O& C' K. s0 o/ d$ b

/ B+ f( O3 V9 q: Y5 B

+ D5 |$ c0 X1 n6 h3 s+ u9 sget-global-proportion; @; k: C' z. w0 |4 ^6 y
let trust-value, v$ J; z* ]4 H2 W: o) u  Y6 e, h
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)
8 y5 f+ n1 d* O0 E6 W
if(trust-value > trade-trust-value)$ Z( _. i# M4 p+ G% D/ i1 `" v
[set trust-ok true]) n. [( L. {+ O& w1 x
end
) Z, s. Z2 m# f1 r7 _* `8 ^6 ~! O2 L# y! \  \
to get-global-proportion
5 H* y( ^9 e, e+ f5 cifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)  F2 @2 `% C! Y1 I/ R0 v: d1 U
[set global-proportion 0]7 V: Z0 q- I' C
[let i 0
6 k# n, N: J2 n4 A9 P9 N9 klet sum-money 0
) r7 p+ D: D- G% R* Jwhile[ i < people]
" u0 g1 u7 J$ Z  X2 j7 \[0 K; f5 M$ f+ L* c) h
if( length (item i% a! Y" r2 h' V7 H
[trade-record-all] of customer) > 3 )

) b5 U/ T7 J* t- o( R7 n[/ B, C- W3 Y  z) T
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
2 ?/ p* n4 m% C$ T$ a]
% c8 S+ z& a; a% w- s7 u]; i5 u- d- _( S& l
let j 0* j* C" d$ ~* u2 G! U& U
let note 0
7 X: A/ F' Q( i# m- d1 vwhile[ j < people]" d4 Y: b7 E8 c' u2 F
[2 F9 U  J9 W, C( }, |: l8 p
if( length (item i+ |. b' F1 q0 j+ \2 v. S" M- w6 R9 f
[trade-record-all] of customer) > 3 )

. c3 R6 a& U6 v% t[
7 s  |. [/ V9 l9 ?ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)& J. }3 J3 k" X9 X- E
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]# k4 M/ L0 o( ]' M9 ~
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
+ p  ~+ D& A# n! r. j& v" y]3 Q) {; x% @. c7 X: s
]3 T7 t( z2 ]$ L' B! w- |7 @
set global-proportion note- X8 z# D3 A5 l0 y  g
]  N# n* A1 o  K% v2 a  j
end
/ z6 I3 Y; \( @1 v! }( V5 j. v3 R6 ?2 X$ a
to do-trade
  C4 G; Y3 G- Y; }  Q$ f& W;;
这个过程实际上是给双方作出评价的过程- Q% X1 e- g, a: C: w" c
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价/ R" ]: ~7 I' V. j5 \4 d% w) U/ {
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价# _4 n6 l9 Y' J7 r- t4 p1 P, T( R
set trade-record-current lput(timer) trade-record-current
2 a, l1 c1 W5 `4 L3 _;;
评价时间, |. e0 q  Z1 N& i+ `
ask myself [
  ]. O8 `/ }8 C  T0 n8 k  aupdate-local-reputation
$ b0 I4 o  S- q: G! |4 gset trade-record-current lput([local-reputation] of myself) trade-record-current% p# Y' C8 Z9 P3 m
]
* k8 |8 M, m- t7 }( }+ k2 Nset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
9 M4 C0 j- |: B8 q! ]9 [6 N/ {* {;;
将此次交易的记录加入到trade-record-one
& L9 u% l  R) o& q5 e* g+ U7 Dset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)& [/ r( E& r% z
let note (item 2 trade-record-current )
! h! V; \: s* ?+ }set trade-record-current
6 h8 H/ v; _+ R(replace-item 2 trade-record-current (item 3 trade-record-current))
1 M  ~* i5 i$ C( a* M
set trade-record-current
% g* _; g6 h( k+ h(replace-item 3 trade-record-current note)/ g& V; K+ m5 a

+ [0 g8 i- A& ~! H9 V% ]) e
# ]4 A: _6 z) O& H
ask customer [8 ^+ _* x" `5 @, O  |5 N. p4 v
update-local-reputation
& Q/ Q; M6 @6 e! l( _set trade-record-current
  q& x  Z  e/ {+ N3 \! h: u! f(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

( M; w& d2 L5 C7 v]
7 i7 X9 b. [# i  |: L' [$ X* B4 O( K/ E! O- p2 d: ~
' H1 ]' Y& ?: p; H. @) A
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer- x8 K( M" M8 D% k

- j0 c8 \" D8 jset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))4 N' ]4 P' |# v+ W5 g3 E! X" v
;;
将此次交易的记录加入到customertrade-record-all9 x5 j4 {5 }* u+ c
end4 w, ?; [9 Z$ O  P
4 J/ h/ A$ K) Q- W/ }
to update-local-reputation  x8 N' r5 Z4 }# E& K+ ]
set [trade-record-one-len] of myself length [trade-record-one] of myself; g! E9 g$ m; ~& Q5 w% d
8 ?. E6 |6 @. S$ G6 g3 W3 ^' x
# d  b% l; t: A6 K# n
;;if [trade-record-one-len] of myself > 3
! G, H; F. ]. ~9 E$ z# N& s) v
update-neighbor-total
7 M) b, B) n8 @! X" V! k) b;;
更新邻居节点的数目,在此进行( d! T) R4 ^8 b. Y) ?, Y5 o
let i 3" M; r9 b) J7 u4 b
let sum-time 0; j3 v) m. J: x1 E
while[i < [trade-record-one-len] of myself]4 {' v$ h# p! h' k  ^  Y8 q  H
[
% r0 l! g$ t! ^set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
% d* z$ i+ F1 A& m2 M2 Jset i( k+ W" H# k# C4 @& \9 X: {
( i + 1)
" ?" F( [1 h% O- S
]) {. |+ l4 O& }! y6 }
let j 3
  y: \. U; J! Rlet sum-money 0, T# \' f9 I# p
while[j < [trade-record-one-len] of myself]
% u3 D0 C; C7 {+ s' q" x# `# v[
; r- {% G. |& ~- b3 Aset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)+ v- R) I) w8 Y$ j  E( ~+ ?
set j
; X9 E! G, l: _2 T. H4 `$ r$ k7 }( j + 1)
4 l0 @% Z5 q$ U6 P6 w5 S
]
+ w& V( F# L+ H6 t, {- D7 Mlet k 3, x! v: A: c# Y7 [  r! N
let power 06 R: T6 e3 m2 y2 k9 n% j
let local 0
6 v" X8 q8 W1 Z0 E! qwhile [k <[trade-record-one-len] of myself]
' }4 D+ d, V5 [[. Q" @# b- ?# q+ @& L: u) E
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)
8 }) M5 U5 Y$ vset k (k + 1)% t' {( D1 ^" W0 ~
]+ f% v% F6 A% I
set [local-reputation] of myself (local)
8 g6 [- T2 o2 Z# lend
' h4 y2 Y# P6 ]- B8 j4 u* I5 L( P) p  _* P5 I7 K* o
to update-neighbor-total
0 j- S, ?" l/ B8 x. B7 c3 ^0 P9 \1 y2 ~
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]* Z1 y4 C0 R3 U7 p* L+ g

: {, N- s; K# K0 O4 U% ?" N

! o! G( d2 L# A2 c. W' N# wend
# Z. \) p+ D6 H% K( s9 x$ Y( o% A
/ ?& q) E' w+ f; Gto update-credibility-ijl
& o( K# ~, b2 S7 ^: y) \- V2 g% N8 h2 a! l/ X
;;
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。9 s& T1 A" U9 w! S/ m
let l 0
2 L$ ?" a. h* |: Y* Xwhile[ l < people ]2 I* w6 n& f1 Q7 R8 a
;;
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9 D' i" p1 I( R! ?9 O# @
[
1 ?) x3 L: k8 J/ [9 \( |, ]& N& Olet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
3 u* g$ w$ k9 W/ Bif (trade-record-one-j-l-len > 3)! J% f  P# j1 o: \7 V3 W4 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
% D6 V9 k1 Y2 ~! Y6 Slet i 3- B4 _' {& u! f5 B" i* S
let sum-time 0+ X# E, M# s6 N" u. L. ^, W4 H; V
while[i < trade-record-one-len]( y2 J# {; b* [6 M1 m, d
[
  M- V' C5 E8 @8 s+ K3 u9 Bset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
! Y( |. f2 @7 E8 b' ~set i
6 q4 H1 g3 X; s0 ^! |( i + 1)

# _7 S/ x! d2 t9 j]
: g9 X& F3 Y3 Jlet credibility-i-j-l 0. a; _( s; ~. R+ V& s2 b
;;i
评价(jjl的评价)2 O: d8 p! Q1 k  v, R' {
let j 30 N$ j5 S- P9 Z. p6 G
let k 4) @- v8 ?5 P4 R8 L* C& P5 `
while[j < trade-record-one-len]; r7 f5 a8 j& K# K6 m! n( k
[
& r2 K( z3 I- ^  N( N) awhile [((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$ t4 L2 @) p( a/ v9 b4 C
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)
% W2 [8 C5 i4 a/ r9 z! B- fset j( N1 D9 N; a5 p
( j + 1)
# z+ _, `/ Q$ G/ h! B, J* e6 _  z$ f
]
! \1 @) O7 l8 ~) U+ Vset [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 ))7 N' ]; F! F6 k, ?
5 k% W  Y2 T( M9 m

5 ~2 k, j: V, r/ V% W% v' B% Jlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
. S" |9 w, c& J( J: N4 a' L;;
及时更新il的评价质量的评价" \7 S. g6 k) Z. z
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]0 X+ i0 Q# U7 t& b# m
set l (l + 1)
" _) T0 A; G) V7 G]0 n6 k& \9 \% a4 H4 R) Z' y0 G
end/ X6 j2 C2 m. H8 D& b& C3 w: V7 i
" n. N2 x! `( C
to update-credibility-list  o3 h! i7 @- e( d" Z0 Z
let i 0) t1 ?2 H% U4 ^
while[i < people]. O- @  `, b4 L  K' j
[
; y+ B% M7 E& _8 z. t. B. R" b0 Alet j 04 e0 h) ]; `$ v
let note 0
1 S6 j8 o4 R0 z- b* Jlet k 0' e5 T) H" y/ [9 Y5 t- R
;;
计作出过评价的邻居节点的数目# [4 |2 z1 e2 o) Z
while[j < people]% s5 T4 `8 q- W( c: H* O
[
3 p6 U0 x' l+ r  q/ e5 C( @if (item j( [credibility] of turtle (i + 1)) != -1)
* e# _5 M8 i6 V# O' l' q+ U* p;;
判断是否给本turtle的评价质量做出过评价的节点
& n' g# }& N& T2 N) y2 p[set note (note + item j ([credibility]of turtle (i + 1)))
) m1 `  _7 I9 ?4 A0 v4 _;;*(exp (-(people - 2)))/(people - 2))]
' c/ c4 R4 w, Y
set k (k + 1)
- `1 t9 S* p2 C+ ~' M]1 O/ {: ?4 O8 c) U
set j (j + 1)
2 [( D; c% Z  T  J! n; x]
4 P; n) A* [" v2 qset note (note *(exp (- (1 / k)))/ k)
: |5 w: n4 e: A3 _set credibility-list (replace-item i credibility-list note)0 S: n2 K0 E* p0 G& ?$ L
set i (i + 1)* ^1 \0 g# ?3 j) `& P) w$ ^. Z
]
3 [5 x- I  Q) N9 I9 y8 C" Tend
7 T/ U. l' j( q9 R6 H" E* f/ S0 ]. a' v' i( E! r6 k) A# Q
to update-global-reputation-list: C: k! J- z- C5 P' p' n
let j 01 C3 `' \. Z4 e& X
while[j < people]
$ o- g: m6 d6 ^3 `6 \4 v$ ?[9 [( u- J: w* D; D" Q
let new 0' A! ^- `& d- {1 ^% p1 w
;;
暂存新的一个全局声誉( h3 f3 p$ o# r* _6 h2 b
let i 0
9 G; k& Z. ~: I& t' {. l) `# [let sum-money 02 l- }3 `. Q% I3 l
let credibility-money 0# Q8 _3 d8 y6 ^
while [i < people]" ~! V; z, C. |  A5 e' J: X4 Z
[, |! Q& E% ]- I; @9 ~8 U1 l7 \
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
  p4 t. D, a% {8 r" Yset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
, C/ T7 S( q/ e5 Nset i (i + 1)- J) r: u2 x" a; _
]
7 P7 E5 x/ k4 M/ Q' Wlet k 04 k7 W5 ]$ Y+ ?6 z- T
let new1 0+ V! L; `6 x' t9 B5 C
while [k < people]
7 h, f4 y* W; \' @[
0 I/ R( q# E- J, [8 Cset 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): M; M1 o4 W$ K
set k (k + 1)& @1 f# {9 R  n: b
]  E- \/ r5 q% m( _6 @) b
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ( v  p- V2 N$ {" D
set global-reputation-list (replace-item j global-reputation-list new)
! v, ~: N  j9 B6 h7 G; N+ Dset j (j + 1)2 q- s- T7 B& m( W- p
]1 D% i) v" d5 D2 Z- O" U& b
end1 [" o' _! f3 C; g# i
% r; ]0 w; M/ _  {9 H
* u/ R0 G; j2 D' ^) J

. \$ F" p7 m8 s% {+ Y: m. Ito get-color. h0 t" }0 w$ S4 k: r* V" C0 |

' Z+ X9 L+ ~% Q( V7 T" mset color blue
2 I- ]  U0 c4 k1 N1 K
end
' O! T6 V9 h1 w7 e% I9 l8 N/ C- B, V0 E6 D* t3 P5 x* g
to poll-class( l" O  R# h' K. F0 w
end& ^% K8 h! A8 Z3 t1 E

( g5 Z) u* p3 N2 y8 B) cto setup-plot1; @4 c1 c0 k& u$ N

1 r0 b, R1 j5 J4 Aset-current-plot "Trends-of-Local-reputation"

  v' `6 M8 d% O. t
% C/ `- w: A, Y9 T4 A4 fset-plot-x-range 0 xmax

+ p* b: t3 T- L/ \  x* Z9 W3 S6 {, j; u
set-plot-y-range 0.0 ymax

- {0 O$ A, k/ s* Mend+ W8 X& _4 {8 ]) i
0 q; c6 I. {( d4 n- h
to setup-plot2, ~; f7 u8 u% v1 p

3 D  L% s2 r/ S5 uset-current-plot "Trends-of-global-reputation"
1 L$ A& i; [# }! d# R. c; t
3 S- _" G  V) I  v7 ~6 c2 Z
set-plot-x-range 0 xmax
% E1 n2 Z5 N& w4 n" G
6 f3 `7 A! ]5 L) ?+ d
set-plot-y-range 0.0 ymax
( }& W8 f+ A+ d
end
, v3 x% ~2 M) X8 A# u' q/ Y
$ d; n0 a/ x  N" r0 ito setup-plot3
2 x+ `2 g  L( o7 h5 V  \
$ ?  B; Q+ K: W2 K: hset-current-plot "Trends-of-credibility"
- w' k" r7 `7 G6 m9 w1 G8 _9 Y
) ~) X& L3 T" r; W/ C0 v; E
set-plot-x-range 0 xmax

6 x: J2 C: M$ ]/ l" ?# X; y5 G' c# S$ ]5 [
set-plot-y-range 0.0 ymax

& C( T& `( h8 C4 }% _  i' vend
$ g. `$ f" @+ c0 @; m" d0 B9 k+ j% u+ U  y: p  z. y3 k
to do-plots
0 M6 B; m7 f3 j2 A! V3 w/ B$ ]set-current-plot "Trends-of-Local-reputation"
; Z: c; D$ ~' X1 x5 Mset-current-plot-pen "Honest service"7 U  p6 Q$ \  {# c3 R
end
: G$ p+ M1 y2 g& D/ w/ |" [+ ?$ k" b* G: _1 B& X! _
[ 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.
' O# d# P3 p. ~) J) @9 f9 R: H; \* x* C, \" p. q; J2 C  o' R
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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