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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 h) V7 h4 o' y: C9 a" s  Q. O. b
to do-business
- G0 f; W: H. v; r8 R3 }( y) q rt random 3607 ?* }4 w! s7 S5 o% |7 Q
fd 1
3 t3 |" ~; r5 r7 l ifelse(other turtles-here != nobody)[+ C( ]" Q) x) I3 V3 b8 i( y
   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 W- I1 l0 v1 l7 u8 B0 x6 j   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
8 J! y0 a! f$ N, T6 w   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
( t. [) A+ F- T  Y8 z   set [trade-record-one-len] of self length [trade-record-one] of self
- {/ _- u5 m1 d( }% y& q/ n6 Z5 P. r   set trade-record-current( list (timer) (random money-upper-limit))
7 T7 n9 `: `) L8 h. g7 Z
$ J8 u) n7 X* X2 N' n4 U8 T问题的提示如下:
2 y  _" a, m6 [
+ Z; j; B4 Q' X7 ^6 D3 ?error while turtle 50 running OF in procedure DO-BUSINESS" o( B# j: D8 x5 X
  called by procedure GO
5 I: e3 u% R0 Z& c6 X! G: \OF expected input to be a turtle agentset or turtle but got NOBODY instead., F9 j0 b+ w  \' c* l+ N
(halted running of go)8 Q! X0 m/ ?9 ?
, s% m6 W* j- W/ m3 j9 T  B7 {
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~~
3 Q( g) P* `, D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
& [8 G" h9 l4 g/ N0 s( d# zglobals[  X9 \. i" a, H; U9 u  g. @0 w0 A
xmax
1 o+ K) l) S) Yymax
1 J. Q& B' g, Cglobal-reputation-list% m& K) P: o; S$ H0 U' h1 a

  \2 B- l8 V0 c;;
每一个turtle的全局声誉都存在此LIST
  J( l2 S- z# u3 r1 [5 ?credibility-list$ f- j! f" {# Q# O
;;
每一个turtle的评价可信度' o( s% ]; F4 r  j$ Z4 n+ _1 |: h
honest-service
: u+ k$ O( Q+ M' ]unhonest-service( n+ ^' r/ C/ H
oscillation
2 t: M. f! [- O2 J( Y7 hrand-dynamic6 U( B; {% N6 F! c3 A4 |& I5 H8 ~% N
]
, \' I5 i) q0 I. h$ I  p5 d# @7 e1 r+ y& C
5 c, {* L) F: F* A6 Z$ b8 rturtles-own[
  u3 R9 N% E" t- Mtrade-record-all
+ z/ O4 \' f7 k  s9 C# @;;a list of lists,
trade-record-one组成
6 }1 Y4 |  |; Ptrade-record-one6 R3 F, X6 Y) ^; ?7 N0 e
;;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 l- h6 j$ G8 q" Z/ D/ O# I- s
& }( ~" c# ]4 i% p;;[
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]]) `1 {) G- g" I' s1 N
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]+ p9 ]6 c; G. S! k) A
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
" }$ M& T# Q" A! C! Xneighbor-total$ V2 P' }5 z0 U" ^6 o8 L$ B0 p
;;
记录该turtle的邻居节点的数目8 |- x0 H9 ?8 Y( a; M% _+ v  q
trade-time
3 T, Q+ X; G" n9 t1 Q. a;;
当前发生交易的turtle的交易时间, Q2 p2 D9 X6 W2 r1 l9 @! x: ]1 c& x
appraise-give
; R4 g0 u1 z* b) s2 H6 _  [;;
当前发生交易时给出的评价
: X* d, U8 p. S, d9 d) A' f. tappraise-receive) \: b' d, F- e7 q+ M+ n
;;
当前发生交易时收到的评价
, u" p2 v, m- cappraise-time
! O5 h) G" e) E# c9 }, r;;
当前发生交易时的评价时间
# l; O5 G( a/ ?8 p% r/ Nlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉' S7 S. S1 e& d8 d( f
trade-times-total
# Q' m6 L, w) t; Q; C1 }+ a5 l" {;;
与当前turtle的交易总次数0 t* l0 J% }6 c8 _4 p. c
trade-money-total
6 b0 g- ?6 X0 X& x" u( m0 _;;
与当前turtle的交易总金额" @$ Y" c& c( j2 u
local-reputation7 ~1 H, J6 d: O) I" V2 `
global-reputation
/ {- z  i$ _; ncredibility
2 w; H: w# R% t# I9 D;;
评价可信度,每次交易后都需要更新: s4 M. G) Z0 u( W0 W
credibility-all) ^2 E  I" {$ k
;;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
/ H: m3 ]  x2 E1 U' u9 v( h1 M
7 S% k2 S' d5 l;;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' E1 c2 p6 c( X; P# y1 x( b
credibility-one7 M2 h% B1 N! h! P
;;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) b1 }1 S" s1 }1 p" E* r4 D' V3 Q
global-proportion. k5 _7 ~3 H8 G. S
customer
% P0 p' F" J2 l- tcustomer-no
( u3 o; L+ M& O: z2 \0 W0 ^trust-ok
+ R6 H1 `+ y; Jtrade-record-one-len;;trade-record-one的长度
; c) \- o' ^4 \1 L]
6 V" p. A2 t* z
' }( I& [7 t3 s9 b- y$ B1 S. ^;;setup procedure
/ b7 g( Q4 D" r" G$ M: A/ T( `4 q0 [' i' M5 x, B( T! Y
to setup3 m6 w% M! O) l6 {( `
. Q+ J) e$ [) J, {- @) f% b
ca

1 j9 z8 |0 K5 |- n( _
1 i& ^; @; L, v  Ninitialize-settings

& [+ u/ \4 k7 b% M: u5 G9 R) K! _# L/ j  V
crt people [setup-turtles]
( ]* g0 o2 T% U% n

$ t) \1 f" X3 e5 ?! P6 Oreset-timer

, ?/ a7 P& P! j# k! h1 J$ k! Z" L9 {
poll-class
5 G4 y8 j9 e9 m- L) {! `
0 d9 y! e5 q8 @! C9 }0 P
setup-plots
+ D- [9 @1 _" T5 z
4 U& ]4 N, O/ z+ U  m
do-plots
" x* b" d# E7 z) n7 Y4 Y+ i  c
end  K- o1 O0 [2 a" b$ Q0 J5 J

/ D3 e; ^  W" Kto initialize-settings# m1 |. F0 ~3 ?0 Z, s% @; S

8 G. o7 v) k/ ~( Uset global-reputation-list []

* i5 \) A/ c9 P, Q$ x; y) \
9 e$ F! k! i# d6 ^/ I, D) h, Aset credibility-list n-values people [0.5]
8 }/ R5 c# n# \' M" e9 J, M
5 B" U" v( F9 W0 X# ~( K0 g7 m
set honest-service 0

; k7 y4 F, Y1 F* c- o( R. i! g: u1 [6 ]
set unhonest-service 0

: H2 f+ d2 @% @4 t' T: f
  |2 S. @! {, Kset oscillation 0
% l  k$ E1 T5 l# f% K9 d+ S
0 R! w) O) U! l
set rand-dynamic 0

' N7 L/ O0 U' ]7 {, J- @end
; J4 F. _& ?) u3 c
- ~& u5 A$ G; O0 k6 K* _, Nto setup-turtles ! i9 `# d  w& f3 p  z' M7 ]4 u, d% y
set shape "person"
* G! h1 X2 C" N6 R9 e' Nsetxy random-xcor random-ycor7 P% \6 V1 J8 n( s/ M
set trade-record-one []! N: X7 I+ E4 [* a

  q& U& e! B# N4 M( }/ L/ {/ Gset trade-record-all n-values people [(list (? + 1) 0 0)]
: D" H$ O9 P% y

6 c' X0 [( E$ Cset trade-record-current []6 h# S" [% u$ o- `, E7 H
set credibility-receive []
5 b4 N1 J- ^1 G) o0 c4 w$ b2 Qset local-reputation 0.55 X  V; m% Q9 w* J
set neighbor-total 0
" L! b  P+ U5 P8 ~9 `set trade-times-total 0
9 i* j, R4 {0 J+ p* G/ Fset trade-money-total 0. B; H; l, J! K$ ~9 K
set customer nobody
; }* I& r  s# k$ n' ~' Oset credibility-all n-values people [creat-credibility]
# Z4 {% L, W1 ]' t% j' Xset credibility n-values people [-1]
. S4 I) B/ @- J4 x7 o  N* Fget-color3 S7 G1 {  f- A7 u
3 @2 H: J$ x; a; d* O
end
+ g/ S* W+ |$ Q
, D! y0 O' `2 M# a  A! ~" rto-report creat-credibility/ s6 r0 M3 f2 V8 I' b) p' N
report n-values people [0.5]0 l3 K; d* [* }# m
end
/ T+ S0 }% W1 J5 R0 I9 `* }3 E8 G7 J8 k% ^- T1 G3 k' N9 D/ j& E
to setup-plots
! z$ Z7 @8 ?: w9 L+ h# @$ n3 c# @) n* }
set xmax 30
( L0 Z1 x/ @  v5 Y" c( }; q+ _- d

$ |+ D, O" J; x* _3 Z% R& nset ymax 1.0
9 [1 O/ ~$ k& q

) k" K9 Q: ~- F8 Y7 ~7 kclear-all-plots
  y* ?' O7 r6 Q) Y  J& }
5 A. ]/ R0 \- G# [. K+ r2 A7 J8 V
setup-plot1
9 l1 s  l9 d% E* N8 {9 t. R+ [
5 \; H. U! F4 ~9 [1 r+ m
setup-plot2
3 ?+ m) r3 g; [! `

3 c/ r! |6 u' F# x1 R8 C5 F' Rsetup-plot3

: ?2 r7 O  l: T: Y; z* Cend, k4 E# S( J& P" ^
1 c6 l* x* u0 u- D$ Q
;;run time procedures" Y0 Y) ?$ \9 u1 T

( w; T/ `; \! ~1 f- C* {to go
) i- C) Z( K7 O/ t+ p# E5 \
  C7 I. R6 L8 i' s6 `0 N0 o& t3 @ask turtles [do-business]
3 Q7 L5 [, V+ V2 q! V) w4 d, D
end/ U5 T& S/ Z2 r  ]1 ?: N3 i

/ b: {+ [- V% C/ L" |- {to do-business 0 b# `; L* S9 [1 W
5 A" z- ]5 _9 |9 b! b
. I- H0 J* f; f0 a$ I, |4 g, S
rt random 360
/ J" S  j, v; p. ]0 F6 h8 I

0 |7 C7 ~0 E! \fd 1
8 x5 f0 _" E7 D
0 r4 e0 P2 M2 w3 |- D; z
ifelse(other turtles-here != nobody)[
, l$ t$ q, r$ Y! U- \  _6 N  p

) F5 D$ R$ V- ]9 bset customer one-of other turtles-here

$ j) z2 Q6 Z6 ]% i1 p1 o( @# ~5 t% V2 \2 p, ~0 t- ^
;; set [customer] of customer myself
8 d; [6 `9 G7 |; @. s

: {+ ]2 v1 H8 {, T( yset [trade-record-one] of self item (([who] of customer) - 1)4 o. l5 k4 N. w! ~4 q
[trade-record-all]of self
3 {3 P) q% p- D  t( T0 M- };;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

' e, ^" _" K5 M  T* ~$ P4 J& [8 D. U& w4 O$ D! k
set [trade-record-one] of customer item (([who] of self) - 1)7 R9 M8 c+ m- c& K& q+ m4 ]
[trade-record-all]of customer
3 d3 U& F9 ?7 {4 G: q" m6 j+ O

; Q/ J' u! a6 D# _8 e  {$ iset [trade-record-one-len] of self length [trade-record-one] of self
- Q9 C  Z/ n5 f( c
% l& `# A, [  c$ J( A6 g& P
set trade-record-current( list (timer) (random money-upper-limit))
; d2 @. D7 g1 t2 T2 |- E

+ v0 i6 R. ^% Q, {. t- Q& P; ]& qask self [do-trust]
) _0 W, x# y7 L! v3 ]$ K, T;;
先求ij的信任度
2 A1 U& l5 I3 O* j. E' a: p8 u& U9 X1 g4 S) Z
if ([trust-ok] of self)
2 m8 m" F% k) C- o;;
根据ij的信任度来决定是否与j进行交易[
9 ], K5 r9 @* i" W+ u, z7 zask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself5 Q# D3 Q7 V$ A- t5 i" @

0 y; T/ a2 j6 M  {5 u[
2 ~6 N9 e7 D  Y% O9 C) D
* B. ]) M9 ~  G% d# L+ M0 t8 d
do-trade

6 F) L6 B1 X- V; `- E. Q: b0 \2 c" U  K. L7 O4 A& M
update-credibility-ijl

4 h$ H% O0 _7 \1 C$ |  J; G# B2 t, s, D0 Y# B6 a
update-credibility-list
. ]& f) ^; R4 e/ X  s1 g
# X/ x5 }" z: d8 n
0 ]3 n. z; B, G8 C! e+ a: h
update-global-reputation-list
5 z5 S! H/ _6 l1 a* I: j* y

2 F, D- [! D9 D, j& ]$ npoll-class
8 a/ u, T. m1 @; p3 A9 m! d  _
/ J& A- y7 Y% G7 x# Q6 j2 d
get-color
5 p/ E' G, ?8 K# o+ S

* \! n* S, i: x, g]]! |8 L( I5 P7 r* k0 g4 H6 x1 \

4 O# y, l* x7 Z7 E! e8 K;;
如果所得的信任度满足条件,则进行交易8 i7 u  X! k& l( l. l
- n$ X9 v) p3 l3 U. l5 d
[
7 b$ ~0 F: o) d& _8 @! U+ m7 I

6 ~5 G: B% ]) z4 y# Z6 Urt random 360

0 N% D4 v- e) `$ R7 j. }. f- m# q# x" ]8 H* Z5 s; B
fd 1

* ?* O: [9 Y+ M# a! J0 g+ C+ j. g
9 h* ^9 p' c! n]
( W0 q+ g1 ^4 e6 Z- H% @# Y

' d! r  B! Q! O1 y  Bend
2 T; @; s- c; E5 F! N+ M" ?
; o3 ]; W& C/ P  _4 Y3 C
to do-trust " Q  y2 S8 T; O5 G9 z3 s' T" t
set trust-ok False
) {5 d8 U9 o* t# `! y$ @! y, _+ O* _0 P( W& e; g/ d3 o/ z

/ f" J# y& g7 j# X! I7 h4 U2 x/ Plet max-trade-times 0
0 v1 F- O' Z9 ]9 `2 d7 M: aforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
( P% u+ E9 k( d! J  ?/ ilet max-trade-money 0
4 g0 C  }3 {" b4 c' oforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]% W9 @8 {3 T! {
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))' Y1 W* ]. ~5 x+ s  \6 f; F

# \+ ?! Z8 N, S; ]  ]- T$ Y
) s, ~: `. I% V* T; ~; {- }
get-global-proportion
) m6 P1 j2 e8 v' g0 Hlet trust-value7 T- E7 _. O  c6 N$ C/ A2 C5 b0 Z- r8 t
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)

) R4 G4 e5 y" l* W+ vif(trust-value > trade-trust-value)
, r0 I* @& v  `& g. |& ~6 K) b[set trust-ok true]) a7 ?( Z/ K1 t+ L$ l0 t
end
7 v2 @% Z# H4 N0 y8 h
3 l5 S, n9 Q7 y) a4 q# F: N$ Tto get-global-proportion% N) V+ P( a) D8 f$ X$ _
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
: Z# Z; K. g* ~9 L[set global-proportion 0]
6 |2 O4 w# K3 d' a/ i+ ]- N[let i 0
" m( m5 ^: c  V# I4 ]! T& Klet sum-money 03 C- H, [& T8 o/ s' ?
while[ i < people]- o/ L% L+ u4 O1 x
[! ^; c% c- \+ q- v0 b; U4 `. f& h
if( length (item i1 I7 {) G. k0 H- z  c. e1 {; j6 Y
[trade-record-all] of customer) > 3 )
# c' H4 o0 m; Z$ l1 O4 x/ p
[1 v; M8 l& U& \. G) \! \9 e
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))6 c$ m& N5 J) U( Z$ w/ S# X+ U2 b4 s
]
+ u/ m# y4 G8 W$ b4 n# y1 w]
8 L; Z3 m, G- U$ |/ tlet j 03 k  ?: W6 h# @! z
let note 0- u4 h/ w. W6 L/ [
while[ j < people]
& d4 \6 Y8 \& \2 M$ z9 Y% z) C. D[
7 v( ^' I% k# ?" ?9 b7 xif( length (item i' x% S! {5 Z1 M" f4 M2 F; m$ _
[trade-record-all] of customer) > 3 )

" r$ L. C4 l! n2 f/ V5 {9 D# u" F* G[6 D! x6 _! b7 R. `3 u
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
& t% p3 R/ m  s% H0 Y4 L$ I[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]9 h( \5 e( U' J, _4 y
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
7 `8 Z! o2 T9 H5 n. v% w]) Q4 v) X; t) x% R9 m4 D$ P
]$ p* `& Q! _9 U3 Q5 J
set global-proportion note
" W- i2 W# a! m. G]
) |' |' o2 m* ~+ m7 fend5 h2 m* A. t6 }/ N

' S! ?- r8 Z, b8 ?; Tto do-trade
9 ?" ~- q$ Q  n# a;;
这个过程实际上是给双方作出评价的过程+ r! ~% `1 j% }) e) x
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价) J+ x. b; Y: f& B
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价/ q: C5 ?0 A% |/ A
set trade-record-current lput(timer) trade-record-current: e8 A" \1 R+ S) [( M$ ]
;;
评价时间
; o' p: @  [* H% X: Wask myself [) V  n" W6 I; J2 J9 I
update-local-reputation
/ C: H+ ~) ~6 N1 L/ p5 lset trade-record-current lput([local-reputation] of myself) trade-record-current6 G/ o5 G4 Z# q) h  i9 _$ t
]
7 X" e, ?; p' n7 T' R) }. [& Uset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
7 [& x' x+ x( U, W! p1 F% Y;;
将此次交易的记录加入到trade-record-one
* Q" w2 [: s- Oset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
% ^0 Y# N, `7 j! e# C" k9 h7 Q: C8 Blet note (item 2 trade-record-current )
3 C5 T' G# I% Z. \set trade-record-current
  N2 t- e2 X' M5 {( U(replace-item 2 trade-record-current (item 3 trade-record-current))
/ b2 j# q  R/ _$ m" _% l
set trade-record-current
# g! z0 I2 T3 h9 f7 R/ n/ ~(replace-item 3 trade-record-current note)' d- U4 F/ ~0 O' z, x2 E

  O* u4 h4 f+ Q
, F* S6 M! B' w* W$ T
ask customer [
- g2 F+ O% K1 J" x& N! ^update-local-reputation
8 q4 _) L9 q' C4 A7 \8 e/ Jset trade-record-current
4 i/ V: L) D4 ?+ y! }(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

% k" [/ C( L* t- `]
' g. C# \. l. |/ z1 s7 O6 ?3 e, W0 B% n. {0 \3 Z

5 \: d2 f) w( {5 Eset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
/ C. }' H4 k+ w3 M
" e9 K& @% S, ?: G
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
2 q5 M6 Z! e# q. w1 j+ n/ g* q;;
将此次交易的记录加入到customertrade-record-all
# {* ~0 H* ?+ p2 K, L( G, Pend& t3 A4 q. S# U& L2 h
% r3 p, d+ p5 |( D8 x
to update-local-reputation0 _, k  ]/ ^8 I- U0 X
set [trade-record-one-len] of myself length [trade-record-one] of myself0 S4 a7 |1 y- R

  I: x: t4 Q4 B/ E+ y! j2 b! q. j* P  R( f' H
;;if [trade-record-one-len] of myself > 3

9 j! _% L7 @7 p; Xupdate-neighbor-total% n2 f, r: Q: r# i1 I5 X  s( s8 S7 h
;;
更新邻居节点的数目,在此进行% D7 s: i/ }& ^+ F8 N
let i 3
; x5 Y  f# K* Z9 r/ s+ @let sum-time 0$ |# G$ U) h( K; r" G! `
while[i < [trade-record-one-len] of myself]
* v. b, l) t7 U+ d- w[: W& P& }$ X; V
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )& J/ A* K- c4 G& a3 S, S7 l
set i
5 a' l( |& m# H3 x* a( i + 1)
- W* i( h8 M0 c! h+ c
]. s/ z7 E: j' u, [3 r
let j 3
/ Q8 q1 z$ H7 J) O0 r+ _' Mlet sum-money 0  W# z9 ]0 L2 u3 m8 n8 c
while[j < [trade-record-one-len] of myself]
6 A8 A6 K& u! z, j% d# p4 K1 U1 O[& m1 P3 {0 h4 f% K2 a" {6 z; v
set 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- e$ v2 W: z: v& T, s. ?set j
! o9 Z! J: ]0 K' Z! F( j + 1)
# U7 f7 K3 D0 ?7 H; F4 {+ B
]2 o* m. I' s, D
let k 37 c9 q* ?) H; D5 g2 E
let power 0
( N& ?+ V( h1 H+ h4 @% o7 j+ I/ Jlet local 0
5 f, W8 O& |& Lwhile [k <[trade-record-one-len] of myself]# n- H/ B0 [1 g  C2 W
[, u& N' G! r; z# q
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) " Z. w& Q- w: W$ {) U# O' f
set k (k + 1)
) _" [. w" l- i. h+ k7 L. t; q]) \# A) G# G6 g' V: O
set [local-reputation] of myself (local)% l1 B3 i* T0 ]+ D6 j
end
, B+ e" j# b: @8 W$ L7 ]) x5 Y' H. K5 i/ ]- F% X' w
to update-neighbor-total5 ~, g5 R3 R9 O; e1 C9 p3 R  i
) ~2 K6 k3 r6 r. c: n
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
# u: Q& c8 m; \- g# I& _2 P% |9 |' T9 Z5 s; b' S  {# }

+ Z2 v; h# Y: M/ _end2 l0 D5 A# C' ?( t) z9 o. i  S

6 q8 c. c5 O6 v2 b4 o- {* D8 ?to update-credibility-ijl
) `4 C+ C$ K4 a- {* v1 ]
4 U6 g/ _. Z  C* A+ P( Q, u8 E) s;;
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。
# n7 O5 o5 S& L, @+ T* p$ L! Slet l 0
- `% w% `5 N5 r) T* @  x$ s) Lwhile[ l < people ]
( U4 m( j( ^/ u; L8 I/ G;;
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 n- j) B. ]9 F" ^
[
0 F0 U' E5 h$ W' l4 L1 llet trade-record-one-j-l-len length item l ([trade-record-all] of customer). j; Z  e- [, n$ A  K
if (trade-record-one-j-l-len > 3). _% _$ e9 I; q  q! i7 X) t+ I
[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-one0 f) |( |- r4 @+ L# f( e6 l
let i 3- s- D( W3 W) X1 }% [1 y
let sum-time 0) A7 R$ ~" M5 d2 j5 h- ~
while[i < trade-record-one-len]  h9 n5 F+ x! j: ^" t
[
4 z+ |7 I8 `: I+ `& L; uset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
9 G2 S8 {5 X& \, X; kset i: }5 e; B6 U  s  ~6 \8 E
( i + 1)

- o1 X3 X9 D8 I1 o) W( C* P; D' C- Q]
8 E4 }5 ~9 d8 c; r7 ?; slet credibility-i-j-l 0) [! u8 k3 k* Q
;;i
评价(jjl的评价)
' \0 H5 f5 ?; z* J5 \, g+ ~$ Slet j 3
8 k& P$ K4 M3 g- S8 C1 |/ m3 T! R- @let k 4% c3 I$ F) w9 ?
while[j < trade-record-one-len]
0 U" A  [! Z! B" w0 i[
$ L" [  J: \& }6 Uwhile [((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, E: z( Z- [1 J( X' M
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). z% T3 q; i1 x/ i' I
set j
3 d) d1 U- L! f6 Z6 h4 J( j + 1)
4 N) j4 J/ D, w. `7 `2 T, l% s
]; h4 H# D5 k8 X" t" @* w
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 ))
" ]. h8 n, u: X2 Z" J4 `7 O* p8 _) A+ j, ]* t$ u
! b$ S; u/ V- V* u
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
/ u$ k' V1 ~, a. Q;;
及时更新il的评价质量的评价
7 o9 v# |2 |7 t/ ~set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]" T* v  W3 u" J, ?( G( \
set l (l + 1)
/ }, [. E7 Y' b]8 ]$ g- g) F* w' d( Q/ c
end
3 o- s( c3 m8 @% H; U& l. R7 g; P- y: a1 |( U) u
to update-credibility-list3 J0 Z. r" `# E" T' w8 @
let i 0
( P" ?0 ?9 @+ U) b  y, O: a' Wwhile[i < people]
/ b. D; q" ~! U! y( C5 t[
: _. e; x# n0 {% B3 q/ S- ylet j 0
* j' ], ?- h  c2 W) nlet note 0
. G$ m# ?/ Q1 G: Ilet k 0
% C: D, B* h$ T5 d- O;;
计作出过评价的邻居节点的数目
4 |2 e+ r& t* X; H$ H5 ]5 vwhile[j < people]: h5 y" ^2 m9 K: O( L+ {
[
3 W, e" D. x" H- k4 vif (item j( [credibility] of turtle (i + 1)) != -1)
9 K9 ^; e) A1 @& V. q$ u" e& _;;
判断是否给本turtle的评价质量做出过评价的节点
% u, N. z) e" q4 g8 C3 t' ][set note (note + item j ([credibility]of turtle (i + 1)))- X: i+ I8 I6 H8 O
;;*(exp (-(people - 2)))/(people - 2))]

. u1 b) d- m4 |set k (k + 1)
2 K% W# c) Q2 F. |7 u, []
' R$ b) a2 h( b/ l' s5 B' `set j (j + 1)- b- s1 ^8 P# Q9 u1 R  l) M* Z
]
+ m9 F  f3 F1 X' K2 _1 uset note (note *(exp (- (1 / k)))/ k)! e4 F# U$ K' g1 w) p2 U; e
set credibility-list (replace-item i credibility-list note)2 ^/ p. a3 l' }9 p& m0 _
set i (i + 1)" J1 l5 g- J* w; s+ z# i
]
. ?8 L- k" Y4 M: S0 f( T) Q' wend5 @  @5 A3 _9 C/ t

3 R3 O% N5 J7 I8 {- lto update-global-reputation-list! H/ Z1 k$ z7 A8 ~3 I0 y) }* b
let j 05 m, ~+ _. v' K- }- s' J* V% p/ S
while[j < people]% q5 s8 P. Z% I6 m, _4 @1 N$ I
[! T2 E1 v- m& f9 L. w+ L
let new 0" p. \# Q# a0 G' J- o* |
;;
暂存新的一个全局声誉
% T. X" n3 t, j, }7 Plet i 01 O0 v2 k# Y" y/ a$ O
let sum-money 0
+ c, j. W* f4 Flet credibility-money 08 R% e3 N- a- ?7 i! P% X* f
while [i < people]+ X" h$ I% O/ S  O2 ~
[. O6 @7 _2 W" Z% o; d5 u) ?
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))). `6 L. x' D: l  h
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
7 N, W- Q8 R2 Z+ K5 kset i (i + 1)
9 L- `! p5 Z- j* C' l+ I+ W]' U. @8 z9 _8 @5 l6 M
let k 0
$ H' ~2 M/ O8 R/ z9 elet new1 0
* b! _3 H/ @2 E$ r; t- ^5 G0 Mwhile [k < people]
9 s; L2 I7 @7 L3 I; D" Q[
8 P% _1 h" q9 s/ zset 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)
$ r) H6 b8 F3 h/ Mset k (k + 1)( k* s0 Q& T& k5 \- H* m1 }. y
]
- S7 c$ c4 b: N/ f9 `5 Xset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
  p* Q: G8 |1 b8 pset global-reputation-list (replace-item j global-reputation-list new). W" l, L  F8 R" T* U* b( Z
set j (j + 1). Z" j% p* Z% e0 x
]
3 L8 |4 v, I7 a2 M: [) l1 nend% D9 V, j3 ^3 U8 b5 m# [
( T8 O5 {1 s, ~4 d2 ?

: [+ U8 s9 b& L, b+ X% B- x9 S% w: H  e: q/ U
to get-color$ H5 m' E4 l0 m; j* x

; M9 p% r. u7 mset color blue
4 s. k/ K2 \  q
end  Z* L, v; g$ E* ~6 N8 g+ H2 ^# ~
2 r* U+ _% N! ^3 m* e
to poll-class
+ m2 J: N+ g& g# Cend
  B& f0 O- P2 f5 x# z
; Y/ l. b4 Y% sto setup-plot1; w1 S! \3 z. [% i9 q

: @( I, J$ {7 M% j: `& J$ k  O! p) Lset-current-plot "Trends-of-Local-reputation"
: k7 n/ F' ~. G" Z! q$ Y# l, x

; ~" k3 X$ Y* }4 a" hset-plot-x-range 0 xmax

6 @$ n/ m8 h7 s& c1 B. U4 M) T) t7 }. u9 y* k
set-plot-y-range 0.0 ymax

2 C2 |3 t, m1 Nend
6 [% L/ r# f4 L' N6 i1 M( v* ?% i; x( i! j; R" e* E7 }/ F
to setup-plot2
. B* y# P* m' j3 I+ V0 t4 q+ g2 [# k/ k( x" }3 I/ L1 X
set-current-plot "Trends-of-global-reputation"
8 |5 a4 U9 Q7 c* [. a3 O5 }/ C8 J
$ f( N! e5 m% d! B) S3 n: N, H1 }1 Q" B
set-plot-x-range 0 xmax

; j- J4 g, a) T1 I$ d' m% w$ E7 a, {1 @. Y- E" o5 F# v
set-plot-y-range 0.0 ymax
  Z0 B8 F$ `0 U  m
end
1 W/ Q: A% Z0 D* }+ f
. _" q# L" m6 s$ @6 N: Hto setup-plot3
0 ~/ M4 ]# u+ A" [! J9 X: T
9 L- j, Z' T% o% k5 k* f$ N6 eset-current-plot "Trends-of-credibility"
- b" Q/ X; [. \0 [

( O. i: w1 p: T$ p1 W" Fset-plot-x-range 0 xmax
  Q5 p6 C( n: S) a; {* F
% b( S  E: E% d) ~
set-plot-y-range 0.0 ymax

8 x, T: j9 ?8 ^- e9 e" J( p1 qend
/ n7 n/ P7 a( B4 L7 L$ `
* _! C# D. a: ]" h* I9 yto do-plots
7 W" L; H9 _7 yset-current-plot "Trends-of-Local-reputation"& V6 m6 C, n1 F" {" h( x
set-current-plot-pen "Honest service"$ ^6 _# X! p& _
end
3 w6 x1 Z% k" r6 t5 G; J8 Y2 `
. _/ Z% o% H. ^( }) R/ B: Y$ }[ 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.0 }% r2 V4 p2 [0 e. E/ ?- K
9 u9 x) t% g7 L# 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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