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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:
9 W3 f  n& v7 [& ]3 S; b: o: O: jto do-business 5 g% O) T1 v; R' F  G
rt random 360, U* ?& O, P( W0 d( C
fd 10 i5 D8 l9 h2 q- l6 b8 p
ifelse(other turtles-here != nobody)[
/ Z+ |) T! X% K, R0 p, 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.+ f% x5 d) @0 @9 p& P/ v
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
/ f; R# x6 P; u$ x+ ~   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
% o+ }5 v: F% B   set [trade-record-one-len] of self length [trade-record-one] of self8 @1 Z6 o$ t/ `- u. _) x
   set trade-record-current( list (timer) (random money-upper-limit))' G6 ~4 i$ V+ {- J9 {7 l1 T. N
7 Y, k$ |; i, y+ o# Q, {8 `6 \
问题的提示如下:
, y6 i, z2 u- P7 I0 [6 b
& P7 r! S& i7 s! u5 Z  uerror while turtle 50 running OF in procedure DO-BUSINESS* M2 o3 j9 k' R' K1 h* J
  called by procedure GO4 C; s. A& F5 b! D7 a, k
OF expected input to be a turtle agentset or turtle but got NOBODY instead.* Z3 h4 a1 A1 M: G$ e& e! g0 ?
(halted running of go)- _. y- p8 v( h& V  C/ l

3 H9 b; ?2 ?1 [" q( ~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~~  O, ^. l9 L2 z* m& _
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! y. m7 i( S$ N9 j" C3 p
globals[
2 }( |6 O+ z4 oxmax
) {  p. N) c6 U4 W; Fymax
# D8 N! Y7 R! `/ k# lglobal-reputation-list
! M- Z0 a8 f1 B$ z+ k  v; `
" `$ i6 ?9 L# v$ _  i;;
每一个turtle的全局声誉都存在此LIST% f) |( f# ]& U+ h$ q4 q
credibility-list8 ?9 K* ~1 Q6 l, C& Y6 Y1 X
;;
每一个turtle的评价可信度
/ q! d. L0 F8 \2 @+ P7 Dhonest-service- N$ D& k( E* h7 _5 ?
unhonest-service
6 M" F  L# `! N3 W& a/ w' {( boscillation5 q0 s/ ~! f% e" s' I5 v7 T# j
rand-dynamic+ N# B  q" d) h1 ~0 G- x$ p
]- w+ S" C5 b9 C% M/ r

6 A# T! F- M5 t5 i6 ]turtles-own[
. }& x. |. _- I; L3 e5 Q+ S1 Atrade-record-all$ p" t3 w. w( B- X7 D
;;a list of lists,
trade-record-one组成  u( m, g. O* g' T
trade-record-one
" y" [4 U& \1 l( [: t7 r8 d9 a;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录5 l0 [+ y+ S1 }- y) g- ~7 O) f( t

) J- w. z2 O% o4 t;;[
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]]+ y7 z5 f7 ^4 ?1 }
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]
2 B! s3 i. X0 U1 m# y" Hcredibility-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
7 m+ V0 U+ X- n" n+ o8 f- oneighbor-total, {% ?, b5 q8 ^
;;
记录该turtle的邻居节点的数目
/ W) G7 T( I; \2 q% H) O1 p, ztrade-time$ |4 V$ `2 b9 `9 A2 f; [
;;
当前发生交易的turtle的交易时间$ X$ j4 S, R; V; }
appraise-give
7 `+ f* M2 P$ d;;
当前发生交易时给出的评价& z# P9 ^5 J2 ?' R
appraise-receive
; M5 o/ _/ ?' h5 K! p2 O" G9 k;;
当前发生交易时收到的评价. }- ~- E+ s: Q1 u+ b
appraise-time
, k! \, _9 q+ w% g  p3 e;;
当前发生交易时的评价时间: U( j$ u: u5 T: R1 W
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
$ _. D1 k, R2 c' G" rtrade-times-total% Z6 ^, H  n* D, ]$ a+ b' p4 N
;;
与当前turtle的交易总次数5 _. ~2 L- A& }
trade-money-total8 v, z7 Y: ^# T* J0 a3 v0 k# j
;;
与当前turtle的交易总金额' _" O' P- h/ Z  ?
local-reputation
5 a  i. g& a. tglobal-reputation
/ r$ W2 P( ~, U! U/ rcredibility
/ c% b, z2 a1 m( q( j! M( n;;
评价可信度,每次交易后都需要更新
. y0 S4 K, [- e& v5 G* @- fcredibility-all
' F* u( m# i4 ^  \: D. y# q;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据
& l$ O' ]$ m' w
+ \) p: W: }. }7 N/ E;;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0.54 x, k( l  M1 G" s) w/ t1 O! p; e+ _
credibility-one
7 |. v, M5 N  ?& f# G;;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# e, w) K$ t# t; E
global-proportion
7 J- d! k' O" B# Bcustomer9 C5 u) `9 Z; v1 ]% U7 u
customer-no
: q2 H3 X% Q: ^: |trust-ok% N( X3 p* p+ S# a2 |/ ]9 A
trade-record-one-len;;trade-record-one的长度; p& n! @  @" ?+ n# C6 o
]
9 O4 S7 j- `4 H8 J7 U7 z0 l- N. R* {1 ?( `  J- d" Q! Z1 C
;;setup procedure* B! o0 x( |- p; Y9 S+ |1 L7 @
* C2 N1 [, L, }; ]; B4 Z, f; W9 z0 U
to setup
% H6 j$ y$ f' s+ l* }7 \3 w: l# S4 @9 `! W) H! l$ c
ca

# F, L4 ^* ~+ {) j: Y0 s
1 ^2 f( v5 x6 o6 v/ L4 {( m) \initialize-settings
$ l5 D8 U. h! ]9 H& S
$ x6 g  ~4 F* q+ P$ ?8 L9 h
crt people [setup-turtles]
, \6 C. L+ O6 s7 }

6 A2 k8 L) d' _; l. F( preset-timer
3 X" f( N7 H! J7 p% {2 }" Y8 X

: K* b: ^8 C2 f1 {% ^poll-class

1 s$ K* H  a5 R& F& \
% t" d& N- e+ C/ U* p. @! m* Msetup-plots
( U5 J8 w4 m  _% T6 ]4 o

) N: t1 p" p; x4 p) k! G' M0 Udo-plots

# S& h6 i1 s0 N7 n$ e/ ~end$ g3 T& q* G2 R3 R! V0 ]* V2 }
. x8 V4 q. F7 V2 |- g
to initialize-settings- M7 T( S  n% C0 F8 ~% b
1 n1 [! X$ o9 C% {% q( r) S
set global-reputation-list []
& Q/ W0 X! y: c# e7 O) M

; O8 d9 |. D/ M/ q6 Y+ s$ pset credibility-list n-values people [0.5]
6 i+ a1 @/ _; V. b( y8 {

& h% Z" b- i' t8 N; K3 R3 u7 Vset honest-service 0
( N% w; a0 x$ B# m; s, v( k
! g) x+ j& H6 X/ m( l' h
set unhonest-service 0
* w; |0 ~3 u7 V1 ?! J1 m1 m

' r7 g& K! C2 \/ w6 t2 f. }set oscillation 0
7 ]0 V0 n7 r& }  W: _* \

1 b9 |! V% L# i. dset rand-dynamic 0

& x3 B2 e+ j9 X4 A1 I" F5 \5 o* Yend* u( K& x: W8 f$ K& l* Z* _% O2 p
* y+ ^; z( f9 a) F
to setup-turtles
9 m8 t# M" ^5 ]& t6 j7 ?) u7 }set shape "person"
" ]7 y- S( Q" esetxy random-xcor random-ycor
+ o* W3 `4 Z% p% s% j8 d3 F, ?set trade-record-one []& x# k: s, b! p: H7 ?
- c% ^) r0 K6 L8 F: \  {7 z( Y/ q
set trade-record-all n-values people [(list (? + 1) 0 0)]
  d" G- ]+ \) X$ C* @  ^

1 s* i5 {8 p2 E2 n5 `9 L: ]set trade-record-current []
" E# f( ]) R+ i6 N: F; L) y: Fset credibility-receive []' q1 X- _5 `: a
set local-reputation 0.5
" w7 l' h' ?0 N7 p4 z9 aset neighbor-total 0
# z: b9 {" q+ t& h9 Uset trade-times-total 0; ~6 v  l7 v/ A3 D: Y4 X
set trade-money-total 0$ T  D; i8 e/ H
set customer nobody
3 S% c3 R2 C, F) E* Bset credibility-all n-values people [creat-credibility]
, ^# D) `; Z1 N4 g. o( Uset credibility n-values people [-1]
! Y! p( G4 h2 A- w5 O8 [1 N8 aget-color
2 s' p( n. U; }+ p9 X

7 W, N3 Q/ ?, G- T' }end9 v; t; h  Q# @. b7 k
, a/ a: ~1 c! U) U
to-report creat-credibility1 }& v1 n9 b$ F2 F5 x( ?
report n-values people [0.5]  C# F. D' a# x7 Q% E
end
9 r* i+ J; h, b, k7 e
1 P  e, O8 s( Z, _5 B7 ^& m% pto setup-plots; A& q' h  S! A# V$ \4 s3 P
" N' `6 R& g( J4 ~- W
set xmax 30
/ q* e4 z& z1 O! f5 n

# {4 u! q' s( L& n" `: Iset ymax 1.0

# j3 U, i1 R: j0 L* y
+ ?' Y/ i% M0 o" gclear-all-plots
8 H% f' t) L+ P  ~4 U: H, s, r
# S, d& x  k# D- k: `6 X; L
setup-plot1

" Z+ ~! |& h& d
. v" h6 _8 m  Ssetup-plot2

0 ]) i# Y0 {5 `- ~; A9 U4 o
* [8 h7 W; {9 Hsetup-plot3

1 ^6 n4 r! ]" S/ r9 S+ V5 I$ Rend
# E' ?0 X  e4 P% F* x
0 ~5 ]9 v  ?" I: F, `;;run time procedures
: [7 B& q! j$ j* d9 h5 n& {" ^' I. C. ?  ^$ ^
to go- d; a. M4 o7 N+ }8 v

$ }% s# w" h% |ask turtles [do-business]
# u: I1 q3 Z" v4 O
end$ n# f3 J* [. _8 [! O3 x" ^" n
3 R6 w" L) Z9 Z3 o; H, ?" @
to do-business
0 Y" P% {4 ?2 x
# @' o( j! M# p! d

' I6 x* U, w, F7 B/ w2 g7 T$ {rt random 360
  l' F0 n  V# d% }8 T9 |3 Z$ }
. o. V4 X; g: y3 h5 v* x6 _1 Y  Z
fd 1

2 ^6 [) x% E4 a1 V/ q
' o) z0 O$ l3 l, |0 b5 nifelse(other turtles-here != nobody)[
+ @3 M# C7 J* @6 }

2 J. n* w- s' _) s" z* G5 c) Tset customer one-of other turtles-here

8 D  Q1 n  i- j* f# [$ n' C& f7 Y
5 e* Z# s8 n, }4 {0 }: D;; set [customer] of customer myself

/ V, A  Y  C5 w& ?. y( a" z; h  L' U" B
set [trade-record-one] of self item (([who] of customer) - 1)
! z( e: f' C/ \' s[trade-record-all]of self4 j4 Y; Z" U/ Q) n' l4 h- ?
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

7 D1 \  c( L- i/ j: m6 m, \
* u2 l6 ?" ?+ z, F8 B  Mset [trade-record-one] of customer item (([who] of self) - 1); {& T4 _7 [9 T
[trade-record-all]of customer

2 a" \; [3 `/ ~+ O; f' e  R) P+ \
set [trade-record-one-len] of self length [trade-record-one] of self

/ @# z* N4 Y# X% }7 X) n% ^" q. [" K
set trade-record-current( list (timer) (random money-upper-limit))

% s0 Q6 I. ?8 H
. V: W' U4 D0 f" s/ }6 Wask self [do-trust]
, H/ u" k2 U& a; [;;
先求ij的信任度
: m% A/ D! I$ x+ v/ N, W* T+ C" {1 B+ x$ d' j- [3 A
if ([trust-ok] of self)8 w" ~. k( S  l" _$ \4 E$ f
;;
根据ij的信任度来决定是否与j进行交易[
, C/ m8 G% S  p2 j0 wask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
5 [! J- `. q3 c  Y6 A$ x" S1 }5 ?$ K+ V- V( {- s, c, ~7 w& j( x
[

1 E0 Q9 U" y3 {- M" G, r
2 \2 w! S1 D; T( Qdo-trade

3 n- t! O. O0 M7 J5 C3 w, N( s1 b8 Z1 ]! u( z6 s2 |  f5 p
update-credibility-ijl
  g, S* g! y9 o: A7 t8 s* l
* E2 {. y5 l' ]* L$ @# k% Z8 f
update-credibility-list1 |9 s; ^: F% Y! \) _
. C  x9 H1 {: O' R
# w* ?3 F4 r9 c, o/ e5 w
update-global-reputation-list

2 d* t* M1 M+ ?5 k6 H; G, p3 m
  z; ~; h" C- K" H$ ^poll-class

) L+ J6 R: {$ @0 `' E* X! `8 z/ z. w1 k8 R; ]; [5 \
get-color

+ e; c$ O& |1 S/ Y0 [2 _0 A) |6 W9 c: z7 q
]]
( ^7 I* u. F9 b: b! V0 G' [/ l2 J( ~) G$ t4 ^
;;
如果所得的信任度满足条件,则进行交易7 L5 z6 X1 b$ ]' s5 C( {, Q

2 p2 Z6 `9 l- c  X, _[
' b5 W; ~, U" O$ n/ O$ @
3 L- Z+ U. U; \5 [# ]0 ?! Z6 T
rt random 360

4 H: N2 {' V9 k8 X- R; N1 S
+ {, o2 A" E& Q8 m1 S/ |& tfd 1

/ L% x; M: o: v# V8 J# K# I& h8 Z; n) c" N2 @# @; H
]

4 ^! |! S7 S* s3 L3 q( Z5 w2 M' [- t# C$ s$ X
end
( J! m6 r8 \" i. a% t

6 B* V' a* z# c1 b2 sto do-trust # n" I6 M' a3 r( e
set trust-ok False
8 M* h: V# u4 B' Y- _& W8 l3 n8 m; D3 S3 O+ T3 T* I7 G" H, m9 d) i

' K: _: q# N' x& ~( a; ilet max-trade-times 0
8 {5 @( b. s- l# Z; Y8 |! X. Vforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
- \9 `* o4 `8 m8 {# |1 Glet max-trade-money 0
4 K  \' ]6 |: f1 C( X. nforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
9 J5 a. g+ z+ a. `6 q; Flet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
8 P5 Z3 V4 C$ V0 P  _0 n  F7 T
# T2 Q9 e3 u3 x' V) D# X9 S

5 e. u$ `! b+ B& T* aget-global-proportion
9 b2 A4 z3 \- ?( q4 Klet trust-value
" t/ g# c* D  U( ~( n4 e9 s5 jlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

, l; W4 f8 _6 c* T% Wif(trust-value > trade-trust-value)
- M7 V/ v9 d' ~% p9 @$ M; x( p[set trust-ok true]
. Z. E" V6 M" Y% ~* kend. H- M' E" I: A: [# Z0 g2 Y
0 [, b$ r+ u0 f' p6 P. C- y9 R
to get-global-proportion+ F/ ]; v0 ^6 e5 p7 q
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)( g' J' c$ y8 _. |
[set global-proportion 0]
) }0 t5 t4 f) J[let i 0
8 O3 E! _4 \. e! wlet sum-money 0
4 K( z  N4 G1 w8 y4 s/ v' kwhile[ i < people]
6 z( h' D/ M3 o+ Q[8 ]  a2 y+ c# y, E: e
if( length (item i0 c) K8 V# i5 B! |8 W
[trade-record-all] of customer) > 3 )
* @% b( h+ D( I1 R7 J' `& h
[
; |! C. Q& q9 [: B3 eset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
9 L8 x" ?  R+ ]: R]% g8 z% |1 Y% w' t, \8 n
]
; G3 `# n. Y7 i1 O& Qlet j 0
& r6 J. R# X& X; y+ qlet note 0
# V# _9 s* K% u& [' y% Qwhile[ j < people]' \+ B$ }+ f' S$ W
[
$ {  y' s. L) p9 Rif( length (item i
3 g; H9 v( g9 t[trade-record-all] of customer) > 3 )

% R( G' c# a: x0 M1 X5 Z/ l[( C, v6 j3 i) F( A
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
9 j* I, U5 h& U0 G3 ^[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]5 W# H( N% z) |  ]7 ]+ f& N, ~
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]0 L. K% e$ b- k/ y
]
$ |+ e  c9 ~4 F  P( M/ ?3 w]
& i* c6 {+ G5 ~' q6 Lset global-proportion note$ O# O( T' r8 X
]* i2 r$ M9 `/ m" ?) y) ^9 h+ _
end
" }) l9 j& t" e# @/ O
5 G7 f* W% |8 T" fto do-trade
2 S# s; |% E2 b: Q# m;;
这个过程实际上是给双方作出评价的过程8 `& c4 V) O( W  j5 U( m
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
2 c$ ~  C8 V& S6 n; Jset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价# A  `% F. k: b; q5 R/ t& |- a
set trade-record-current lput(timer) trade-record-current% t& l& j! F+ m
;;
评价时间
% V: i3 F, \& y/ G' H3 lask myself [
, A7 k/ p+ B; @update-local-reputation
* `+ z- m' O% Wset trade-record-current lput([local-reputation] of myself) trade-record-current
: `0 U& k- f; ]3 Z- _! N  O]
3 D, x9 J% [7 Gset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself1 k0 p  @: w3 S3 u! O' ^
;;
将此次交易的记录加入到trade-record-one8 S8 x8 k2 B% ~/ @  ?8 B
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)8 F: V, F# L; M5 P
let note (item 2 trade-record-current ), V4 ~) n5 y" G' `8 T
set trade-record-current( ^/ q$ N- x4 H. f: j
(replace-item 2 trade-record-current (item 3 trade-record-current))

: P1 D0 d# q! R( |0 G1 Gset trade-record-current: H+ N8 _4 K! i' |% V1 s. |1 A
(replace-item 3 trade-record-current note)' ^! ^6 ^5 [: P; V* c

9 V1 L+ B6 R7 s! U, D  _" I

1 L/ p% D; t8 m3 Sask customer [
6 ~& N5 C! A9 l6 I6 E  W. w! Dupdate-local-reputation
( e9 l2 a9 t0 ]* Yset trade-record-current
$ C1 i% D1 {- R: x6 e, @+ q5 z(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

& _% I% f! G3 o) O+ O  O]. P" L& O% \3 h# h
3 h5 P4 v9 Z2 l0 L. S! x

- b2 Z. \* R* F1 |set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer2 F  G' L* C1 E$ D0 P0 H' N  O

6 R' _$ Y2 l. `. W6 A# l' Vset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))( F% X3 l: I& f
;;
将此次交易的记录加入到customertrade-record-all
9 `2 q' k0 S( Iend
& d7 D( u0 }: Q$ j( p0 F; I/ w
5 \3 B' G1 v- ]$ g2 `0 |8 M" zto update-local-reputation; h) X$ A8 d! H! v7 l4 |
set [trade-record-one-len] of myself length [trade-record-one] of myself
6 B: u0 H# a, K+ e4 y6 _6 J: u- ^, @1 w2 ?5 t$ t9 s, R

' {' r& r# s6 M# ]5 o. Z" O+ }' K;;if [trade-record-one-len] of myself > 3
, D+ K4 d  y% x$ d2 \- }
update-neighbor-total7 L' a+ i/ o5 p
;;
更新邻居节点的数目,在此进行& P8 }$ q( C0 ]5 C5 e
let i 3% G8 I1 O- b0 a
let sum-time 07 g1 Q1 h& G' O% H8 P" ]8 V
while[i < [trade-record-one-len] of myself]
7 m  q# b/ a; m* p" `0 v8 K! S3 M$ O[
1 l3 c3 _/ S6 [5 }+ Aset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
; l7 P% L: o1 l) F- oset i
  |8 P7 H4 ]2 q; t0 \6 g( i + 1)
  C3 l$ q! f8 {) X  d
]) U+ d: E/ @( l# W
let j 3
' ~8 K& p$ |* g0 Olet sum-money 04 b! G. s+ a6 x0 b) E! X9 }
while[j < [trade-record-one-len] of myself]
$ }1 Z; J; l, k[
1 L$ i1 h2 Y* ?" S1 Rset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)! Q4 j' ]3 s* I2 z+ K. M- W
set j
- N( }' ~/ f4 Y4 F1 n7 E( j + 1)

4 c- F0 h6 ?+ B3 x2 I  u! \2 g* X]6 H, ]8 z6 Z# j  L0 U
let k 3
& F& C0 v% |$ Q- y/ [/ r  N6 tlet power 0
0 F8 u% t  X; Y+ K  u/ U9 Slet local 03 Y6 T- \) y+ i8 E) e
while [k <[trade-record-one-len] of myself]. K/ ?; }# l1 v# I
[* _) y: g3 |! H; m
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)
4 t7 x3 ~0 J4 m% r8 N- t( t8 qset k (k + 1)
: ^) x8 o+ I- ~* g* |]
' e  F" R  C& r7 G  J0 Aset [local-reputation] of myself (local)
: g: A0 G" m; Z: I, Y$ V& hend! Q/ P$ |& u- a8 X. N; ]( X7 r* L
% A! o. t6 w# ~1 T9 F
to update-neighbor-total
6 J3 p1 n& g( h3 |2 o2 Y) U
- M' D/ g3 z8 t. }2 q2 g6 Eif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]. h8 l" B0 L/ V7 p1 Y, z
5 ^( u5 `" y1 `
$ G5 U. B: n6 j) y1 S5 r* M
end
' ]$ U& W8 R& F! o! M/ f, e5 n: i1 o6 Z/ m7 O% M( [. ]) |
to update-credibility-ijl ( x8 p, G8 V: V! G9 P
& O* I" J/ X. C% t
;;
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。1 A" M7 p' \* E7 v
let l 07 n8 n4 r6 e% b: x# h
while[ l < people ], c0 I4 F9 v! N  i+ S5 T) E( _( l+ 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+ z0 j) J6 s  }% ]3 h
[
, R$ h/ `3 y6 q( @* s  h- Q5 o2 xlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
1 o6 p9 X* B  r$ E4 V9 ?0 Mif (trade-record-one-j-l-len > 3)9 p/ q( K1 o5 O- S) `( }7 n$ 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
1 O4 M  q/ M1 T3 ]9 ^. p" n' Llet i 3
& n' [5 t4 ^/ L. D$ @9 O% Llet sum-time 0" s; `5 @- d2 ]1 {; f: _2 w
while[i < trade-record-one-len]
2 {9 V" T: Z! K+ M[: `* d& r  n3 j
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
; n6 ]- e6 E. ~4 R5 y! x7 C8 Oset i
% h3 D9 i8 L6 R/ N" q( i + 1)
, M. {- Y3 R  d5 j- C  @/ ?
]% g% i& M, m, X0 A( l; G9 ?
let credibility-i-j-l 0
, A) \5 h: x, a9 m3 G2 ^. \;;i
评价(jjl的评价)+ D+ m$ i& H9 d1 }) m* c; y
let j 3" r& \! }$ d% \# i, h5 l
let k 4
; X: \4 L" h# E( }% Vwhile[j < trade-record-one-len]
% G; Q: C$ t/ S' C% h4 j[
8 K- \* l6 w" h& j& d. @while [((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" Z. H0 a" Z# s7 m1 I( O
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)
# b1 s3 A( |9 w' A! N% nset j
6 x9 Q* e* a# i* x8 Z0 x( U( j + 1)

2 O0 s" R4 ~1 I]/ y' G( M/ g0 K. F( c+ _' W  X
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 ))! h' I! E. `8 L2 s
5 h: j6 x# s3 z  ?; f( k1 i; X; b
/ W5 _2 }6 ]4 T
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
  b6 ?- x3 ^+ q: _4 ^4 {;;
及时更新il的评价质量的评价
/ f! s7 V0 C5 r' G5 r0 t  Lset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]$ \" q, r- l+ z) E/ [
set l (l + 1)
0 Q2 O$ E. J8 n, u]
4 o" h$ W9 d6 C6 v  u, T  Cend3 \# e/ G! g* G7 a; s7 {

* _5 B8 N2 E4 H" m! ^to update-credibility-list
! t; d0 g- y, l& L/ R3 \let i 0( e* D% S; f- D  N3 o% g5 s& x, o: m
while[i < people]8 c2 f2 r5 z# ~0 W" l+ b0 I/ h
[) ?6 {, p  N8 g  {3 h4 X: T
let j 0
3 {4 _0 I: V' a! Rlet note 03 u1 X# L7 ~0 @
let k 0
. s, Y8 ]3 U4 ^9 r( e; H;;
计作出过评价的邻居节点的数目
9 ]: j& O+ J1 T; Ewhile[j < people]
7 ^6 U% p2 O( U2 b) @8 o8 z, i2 |# W[
1 U4 U) v( U) Tif (item j( [credibility] of turtle (i + 1)) != -1)
2 ]: d, G( V* f) W2 S- `;;
判断是否给本turtle的评价质量做出过评价的节点) Z( W8 I9 o$ d# [8 M$ R% J
[set note (note + item j ([credibility]of turtle (i + 1)))
" W4 J7 b# z4 M, y;;*(exp (-(people - 2)))/(people - 2))]
7 l7 \2 u. P9 h, [) M
set k (k + 1)
! r$ @; C; {# i5 d: U" t1 }9 K]% ^: z& R5 [7 ~8 q6 t2 n
set j (j + 1)" e+ g; T+ H3 u: R" m! F, [) Q  ]
]" x% M& t0 {- e+ w4 g
set note (note *(exp (- (1 / k)))/ k)# p8 S4 T& @- h
set credibility-list (replace-item i credibility-list note)
+ y3 O" G: K0 zset i (i + 1)! n3 N* v: X# @9 q+ `
]
, W* O- T: J! W. |end
6 j& l7 |) y' X& k( u+ W1 N
, [' G6 [( G2 q2 T, Eto update-global-reputation-list
/ F6 y; e" B* M( w$ i" v$ l6 plet j 0
; ]* @9 X( w/ ~  h# Z" ]while[j < people]
' M+ k6 k' S5 x% H[
  R: `" K3 V( E. ?* plet new 0  O. {' {0 r8 c6 G% I& H- v; r
;;
暂存新的一个全局声誉
8 ^1 F1 _1 ~' k- clet i 0
* s; i( d. Z4 F0 klet sum-money 0
& R4 ^' P9 e! k5 Y- _1 m6 Q" U% Qlet credibility-money 0+ N" m1 F+ n8 Q, o" D2 h
while [i < people]) ?5 a2 U9 ?& d# i
[
$ _3 G8 h% s7 U$ Y% B5 d6 Yset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
# e9 L* Z% x8 s* Eset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
3 t( T7 ~$ ^2 I: oset i (i + 1)) w0 U+ d/ W+ i8 I8 M, Q+ s
]
7 B/ `! [. M" z: |let k 0; z8 k. }4 [) d2 K# R" h
let new1 0
- ^2 F7 b4 E% C/ G  V7 g! j% {while [k < people]
/ G3 Q/ x7 }, w( r; s$ J[( D; A# r0 x2 {3 n0 Z& ]
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)& E% x6 ^; H1 t' k( w+ G
set k (k + 1)( [( d, a3 q, G/ J9 P# J9 z
]
2 A* X0 q/ R6 r( l# ?# |set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ) E1 {- e$ A* }2 o  G3 O6 J3 c
set global-reputation-list (replace-item j global-reputation-list new)
9 A3 f( h- u8 [2 A! b( w. e  \set j (j + 1)0 _1 S9 B9 z( x- I- L: `
]" l: v  r, H8 d7 s  c8 R7 m
end0 F  a& n8 O% W' u# M* j5 @

# L6 ~' g& g  a% S6 G+ A9 J" m6 n& D) z( b, b

) @* |8 r. t* n: y: C' A& Z4 vto get-color
2 G0 z! T$ X, |" V4 X/ I7 o( h. U3 ?9 P0 U! A0 l
set color blue

. p8 {7 x; g% send5 u0 l6 p7 {: v( F/ ]

7 M+ B4 D  W3 r6 y& O. G) V$ jto poll-class
6 X" \" G' O2 N2 Xend
* g; N7 L' x4 X9 `2 Q3 o6 z
, t2 B- e1 [! s1 dto setup-plot18 K# D# d3 M1 m$ v4 `

+ M2 B% q" B+ c- u, ~2 q  h! S5 }; Tset-current-plot "Trends-of-Local-reputation"

( |9 w4 r' @) O) ~9 ]2 ?/ o5 ]9 K9 u% U+ t
set-plot-x-range 0 xmax
; Y. U$ w* `3 d! |4 @
3 Q$ G2 w; `- s( t3 ?8 m# f0 x5 s
set-plot-y-range 0.0 ymax
: G- p& X! J" T6 B( g5 B( P' a! A
end# L7 X. i$ E" G9 s8 g
) B* V- m! u- R
to setup-plot25 K) ?6 A& E( j: F1 A
) k0 L* r* K! h# ~! W
set-current-plot "Trends-of-global-reputation"

" X- M2 Y% d0 g' Z" }; X9 ~8 r& V) N
set-plot-x-range 0 xmax
( z# |0 l8 l& [& r, K$ x# i

5 _/ t& L" p7 G; N! Y. @1 mset-plot-y-range 0.0 ymax

! r1 e6 p! i+ v0 A2 i, O9 u5 Dend
$ }, P, C: [3 C8 E4 r& v" R6 @& ]4 c/ H" j4 S
to setup-plot3
# o/ S$ w: z- k5 F0 x& Y1 a7 @  g* g5 F+ x
set-current-plot "Trends-of-credibility"
2 L1 T6 k: ~2 l( q" c
- k" z: m" c+ W/ x! Q" I
set-plot-x-range 0 xmax

- a, @0 J" p3 P' }
7 f0 e  s7 k4 `( u- Hset-plot-y-range 0.0 ymax

6 e0 U7 d( Z6 D$ k0 M: L6 e+ r) L+ |end
% o; ^8 ~; H2 k2 p# G
) S1 K8 Z5 H5 W1 X  y  Q" Tto do-plots0 J2 t; k% H0 Q4 _
set-current-plot "Trends-of-Local-reputation"
; @  p% l% }2 m. [" T& u" L0 Tset-current-plot-pen "Honest service"+ \! @  u& e2 n. x+ J, \
end
. z2 a! C& }4 ~
' ]5 R% k4 z( n1 ~[ 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.
. t/ V/ G( ~3 ]5 M8 l7 `: f/ I; @
- j6 Y4 |+ k- M这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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