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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:. _, t0 t, D" S' ?
to do-business - ^0 e; }: E; k9 c4 B: y$ i
rt random 360
- O8 f: W. G  I# X/ j fd 1
! a9 |- G1 u. q1 d ifelse(other turtles-here != nobody)[
$ u; Q5 _* W5 k   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.- ]# y0 a3 K* ~4 N+ N
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
1 K0 C& U, h/ \: i, u   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer* J6 ~- {/ p& B3 Q
   set [trade-record-one-len] of self length [trade-record-one] of self" ]! G, E* |( g  h1 v) G, ~
   set trade-record-current( list (timer) (random money-upper-limit))! e4 f9 I1 D6 J! S* f9 L

  A5 S! _$ F4 K5 k8 Y' G3 w问题的提示如下:8 y# H# y' g$ C3 f2 C& [

9 T# l7 Z6 Z0 ^: J$ @error while turtle 50 running OF in procedure DO-BUSINESS6 N" @$ G% X) H9 W
  called by procedure GO3 Q# w  k# }6 e& a
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
, V$ v: P3 H9 f& E
(halted running of go)
: k9 b( I, T( h( u4 c' V  S' U& ^) ^. @2 r5 v5 \( s, D& h6 d; O
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~~
7 U: n) e% P, i+ j5 d: 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+ {$ @; n% b8 |8 H" H
globals[5 M) b! Z0 j) ~' `9 A( u
xmax" a) `# m2 W) c) Q) V0 m) m! a2 P. ]8 e
ymax
; ?2 q* L. e$ L  Iglobal-reputation-list1 C1 t6 _3 ?$ O  j9 e

0 l, D/ t! d* f" Y3 c: K;;
每一个turtle的全局声誉都存在此LIST' i# e. p6 E( W* l! \4 k
credibility-list
9 \% h* r% `' l% r& l;;
每一个turtle的评价可信度
# e8 k5 `4 R. x0 H  Bhonest-service
4 E+ d! D" u6 u+ D) \3 vunhonest-service
7 M) u9 _* c. r& v9 Koscillation8 W9 }1 C  v, o0 \. o8 c; G) O) o+ |
rand-dynamic
  h: d  ?' B1 s8 K]
0 ^& U7 x" I2 @: T  A/ g$ m3 o1 ?3 }# p4 {5 s
turtles-own[. N& h% r# Q# \, q( |; N
trade-record-all
9 Q4 Q/ G) A0 T# R; {* A2 D* J8 B  s- l;;a list of lists,
trade-record-one组成* t7 |+ N) n- O8 r
trade-record-one
9 ^; x5 V; e  z;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录7 v4 Q: r' T: z
( C' Z- U) ~9 R% D4 J$ _
;;[
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]]
( j! f8 u; I; @8 v. D& gtrade-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]  M1 D7 X3 s$ }0 E! o' L
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+ _6 @; A; I1 x# }
neighbor-total) y2 e# k* m% s& F
;;
记录该turtle的邻居节点的数目2 Q$ V$ F# P( k% o; r; z* u
trade-time
' N6 P5 y+ z5 G8 k) m4 m;;
当前发生交易的turtle的交易时间
; w0 r* F* r* F& Y: w0 Uappraise-give% T" {: Q/ y* X4 k
;;
当前发生交易时给出的评价) F& t) K- K! W' {. k
appraise-receive
5 a& u( r3 B( N  f. E;;
当前发生交易时收到的评价
8 t( C; L6 `2 f/ sappraise-time
  o8 l( a/ D( a/ k;;
当前发生交易时的评价时间
1 u% Q4 f8 G6 k  x: Glocal-reputation-now;;此次交易后相对于对方turtle的局部声誉* G* j8 _% H: M
trade-times-total
, _4 ^7 g# I. S% |/ r7 O; |7 q) Y* P;;
与当前turtle的交易总次数+ G- Z( w6 t5 ]! o
trade-money-total
" y. v, c9 c) T4 g. x* [8 p;;
与当前turtle的交易总金额/ F7 u+ E! j" U4 H& K! S
local-reputation
7 F/ h! @) S& x0 aglobal-reputation
7 f# k2 j8 }( z3 Lcredibility: X# D$ i% I- U* Y0 i7 V% g
;;
评价可信度,每次交易后都需要更新+ U6 Q4 t9 O7 M1 P
credibility-all" t; r2 Q/ J* k, a. p* g
;;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 d( d5 t6 \. V4 z" @& H9 e
0 K1 n' Q  [# L3 U% S1 K
;;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
7 X0 h# z( n# p9 w% w3 Acredibility-one
" l- W1 g( {* }/ N$ x! z+ ];;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
( o8 a$ }/ a0 e6 @global-proportion
6 D8 h6 ^- I* Acustomer( B6 L0 t! v% U8 V" g; E5 T9 Z: Q& b
customer-no& u. k. V" p+ K( _  K& f; c
trust-ok- `7 L$ q9 H4 n
trade-record-one-len;;trade-record-one的长度; D  T/ }2 q& S: L3 w# a# _6 V
]6 C  `3 U& ?6 d! F* i+ C' T
2 D4 c0 b% O* c  s: T5 Y& \( j
;;setup procedure
% J7 _2 I5 ^, S) A" V' J. d5 A: ^. r; K. L' u/ r! Y
to setup
1 p2 U$ a! {$ u3 c
8 ~$ u+ Y8 Z6 [3 Qca

: t$ Q( g& f5 u$ t
1 V) E. k. D% Q7 x, x3 _initialize-settings
8 j8 ]4 |4 K4 i0 @
- l- `$ X5 r& f) |/ n1 v0 K5 c' }
crt people [setup-turtles]

1 o0 d+ C0 @4 A0 X% l0 b- B) O* `, _6 l
reset-timer
2 _7 ~3 G2 v; d
3 V2 T0 j4 z5 e9 i' m
poll-class

3 d' ?: T  y; W  C  D# a
8 W7 M' C9 x9 P# i+ lsetup-plots
7 _% Y$ \/ l; N4 C. ~0 p

: `$ G6 [* z& c' L+ l* L1 Pdo-plots

& D$ y# Y. s% a3 B5 W$ gend
3 o& }! S" Z- A* N3 C' s& g8 M1 [% m% c( Z: Y% m
to initialize-settings0 a4 e6 z7 M+ P
$ f: u  c1 E" {* d2 n. K' L( D
set global-reputation-list []

1 Q! K3 T; l+ D; L; U6 g' d! H" l, H: G% i0 }' x1 R3 W; I
set credibility-list n-values people [0.5]
7 C3 b$ b, E' [6 v$ y% f

* u: w2 t- l, s% t9 k# Mset honest-service 0
% m5 P5 ]6 n8 W+ p3 ?6 A

. \* ^1 y! r8 \4 [9 Q4 A1 wset unhonest-service 0

; S% ?1 Q  ~) F, N8 @+ N8 P; @2 K2 N" v4 k' q0 d
set oscillation 0

6 q$ p1 w; u4 e/ C5 L/ _& C2 v/ B  c. s# @) T! g' D
set rand-dynamic 0

- g9 B& [5 ~: `* w1 Y' a% Aend+ ]( j0 F# }" V& Z# w6 y

( s# k4 ^9 Q1 b7 k8 k* Hto setup-turtles
) q  [, m  o( b* Y# p$ a3 jset shape "person"; c0 A- c- i. u% F  o/ ]1 W
setxy random-xcor random-ycor/ o! M( \8 F0 Q1 v* v' o8 Y
set trade-record-one []* i' l8 M. ~7 P4 @
+ F4 G0 r' x0 n0 [2 _" {1 a
set trade-record-all n-values people [(list (? + 1) 0 0)] ) t  f5 L* g6 L9 }

0 n  _  W8 G! vset trade-record-current []
$ z! Z8 E4 g) f- b7 y  F8 R# dset credibility-receive []) M+ B& b; W2 V* Y2 c
set local-reputation 0.5" h$ ~7 S  x: H8 e; v2 L+ ?
set neighbor-total 0
/ m2 [$ H% r# p2 c4 ?: R  qset trade-times-total 07 p; t! y( w  v6 G& i, ?
set trade-money-total 0
# k. A" }: g+ R, \: |' j: pset customer nobody
0 A) w; J# _' Eset credibility-all n-values people [creat-credibility]
' |  \- Z7 Z* i* u, fset credibility n-values people [-1]4 o; g/ ^. s9 T4 N& C" B
get-color( J/ i$ @) a/ y. j

5 F6 a- N! K7 G1 tend8 X1 ?: D; G1 I

. s: G7 Y7 J+ f0 h7 }8 n* Z% mto-report creat-credibility* F' F* }, X; ^: `. A
report n-values people [0.5]
( x: I# Q2 \# p) z4 Iend
  X, N& G8 V" M% H( X# ?! L2 c6 Z: m& D$ ]! j% V
to setup-plots* g0 d8 p: @& C/ j9 J- L- z

) H( A2 |, e' `( v# d: Fset xmax 30
( d5 R# O& N( w% _0 X8 R2 C
" K8 x2 f. s" v! t
set ymax 1.0
8 A0 o3 L" P8 g; B( [
8 j) v$ J& d5 e; X9 E8 y7 D
clear-all-plots

2 T/ z/ J6 P3 {) D3 y* P
5 H) H% w' D- W" {8 o4 b8 j( fsetup-plot1

$ ?  x; O: B1 t7 A$ O
: v% q+ T6 u% b* m! c0 U9 j9 Csetup-plot2

* n9 R7 u5 S# I6 I; z
& W5 W: o4 u, d* S# {setup-plot3

. r0 X0 B" l6 |8 Yend
8 @  P2 {2 b" ~( B( J- y; o$ _/ d4 ]& @* {" i3 b
;;run time procedures$ D8 @7 R0 d% ]# i* |- @

. ^! n2 `' C2 O5 Rto go/ h1 Y6 [! @3 `, K, J
& F3 I: d+ k  e$ V9 I
ask turtles [do-business]
8 c7 @7 t. u0 v  z( F7 z+ A4 ~
end+ ?/ e5 W) S$ ]& N$ f/ }9 K
* z9 ^, c* Q' h. o. e( z6 a
to do-business
  _: i! @1 b! B3 U. k" o
/ P% Q/ r7 _4 G3 t; C/ v8 Y

" |2 u2 |) K+ A; {6 x, Ort random 360

, ~* x7 m! F' l+ ^4 }6 l& [7 Q* {2 W% w2 d% U/ x/ V
fd 1

! U3 s4 q% ]: ]; r1 a4 {
* w: Y* N2 R# n! ]7 cifelse(other turtles-here != nobody)[
5 O8 @: P: C& B! M. h: z

, g3 g+ T$ b3 B0 A3 Eset customer one-of other turtles-here
+ w6 \+ M( \8 n( \4 [

; T/ I" o% ^7 B  ?;; set [customer] of customer myself

$ w- p2 l8 V1 m  }$ _6 N' |% y' e2 s6 L
set [trade-record-one] of self item (([who] of customer) - 1)7 [' y# [$ H5 ~' o- ~2 V
[trade-record-all]of self3 P0 `: e) P5 N/ z0 T
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
4 C0 @6 Y% g0 k

  R7 G# Y& D; a6 C# C, Rset [trade-record-one] of customer item (([who] of self) - 1)% q$ j6 L# Y; ~; A% x$ i
[trade-record-all]of customer

! L) E. e* {2 P1 V& U5 f. t! N" p, o% N9 O
set [trade-record-one-len] of self length [trade-record-one] of self
/ ]2 o# u8 U, z- k) q

; c4 @% i2 c- X0 ~4 g7 }set trade-record-current( list (timer) (random money-upper-limit))
- D& b. I% h( U% u. n" Z
8 @! g4 `3 W" K- a9 S
ask self [do-trust]. Q5 ^/ |4 ~' @
;;
先求ij的信任度; a$ k3 V9 |7 d' Y. v
$ W' ~$ m* q4 q8 r5 [7 z
if ([trust-ok] of self)
2 l" F5 k! \0 j$ ^/ C, C  P;;
根据ij的信任度来决定是否与j进行交易[
9 e7 q' w8 j! @1 [! e$ ]# [ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself! O1 t! \0 [# X) N8 k4 G# \
' J, z! k9 f3 ?
[

: h0 l. e% b8 `5 e& ^# u
/ Y% w% d0 `9 U" R  l3 kdo-trade

3 \7 C- U3 y+ p+ Y, d) o  y: u6 ?4 }5 t' W; D: K
update-credibility-ijl

* @4 c% L7 C. H8 B$ Z! p* ~4 Z4 d# R5 C$ M1 ~- ^5 r+ w
update-credibility-list
( M3 N- O4 G' e0 t+ K# L- _

9 o; d5 W1 e) O1 R4 J5 j
! g7 E) T- `5 f0 a' z3 M9 F, ^update-global-reputation-list
" t2 I# ?/ S+ {

3 j1 r" s; L1 R  Y5 l0 cpoll-class
: j7 T9 ]) P& v: _: z
& p+ j: [6 [! a4 u* k
get-color

& l# A* k3 r4 B6 Q: |1 J( D9 v1 @  B( E$ _
]]
( e0 _8 {* o( A! `1 T: ?6 J5 l: ?2 {1 v4 ^2 A: Q. V7 o  S# l
;;
如果所得的信任度满足条件,则进行交易: H2 M- r. K$ Y! u& j  o
' s- l2 N) O* c" k
[

4 W6 o; C+ m/ H0 x' U, ^: k& ?2 ^' G. U- t3 m
rt random 360

. F) A' V# i$ g" [3 l8 Q0 q1 |3 j9 P
fd 1

9 J: s: x# A+ B  {2 k+ ]: p$ K# Y  {/ D% y% P2 f; l3 I  w
]
7 Y6 g. t" y5 A) E( D. b; H

, `( c& o) B9 X5 r! z3 ?" Xend
( Z& n% R3 S5 p; I' y: m7 b
% y' O/ d( C: P" \0 h, _
to do-trust " D( y. Y) c" m
set trust-ok False9 ]! A; z; a& k$ m
( E2 M9 ]7 B5 Q2 O6 F# z5 E& l

2 }: V' Q8 b  d, A$ w, C% M# blet max-trade-times 0$ u9 n5 J! {7 B0 }
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
8 i  y0 G) X, M- B; \8 Ilet max-trade-money 0
5 D% C( p  G3 g6 R1 y5 Aforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]9 p: U# D9 n7 A# v
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)); ^6 U/ \6 [9 K) p

2 E% M# L, h* @  S) z  N

2 s3 f0 ~/ \* k. ?( |! D# a# |8 Wget-global-proportion
; N" ^5 {* K" W" rlet trust-value4 l' g2 d# V' `! M. m5 `
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)

: z' d, X8 I- b4 zif(trust-value > trade-trust-value)% M: [4 i( [0 d% n7 |2 n. b# `
[set trust-ok true]
! x/ U9 G( |" x' M# ]end+ w) o  A4 `: v  o

3 W/ x) i. p4 f6 Ato get-global-proportion& \; O$ s! e  w! S+ N
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
, @  O) V6 z( h  \+ I[set global-proportion 0]9 D" r; q1 U5 Z. W# Q: g! ]
[let i 0
2 ~9 l7 Z( s; h( L1 C; M6 nlet sum-money 0
# p1 o1 \8 h/ _$ t  }% H0 Y! K7 kwhile[ i < people]% A/ t- _- {; y
[
8 }8 E& C- _. o$ A) Oif( length (item i+ J* M6 N& U$ i9 N
[trade-record-all] of customer) > 3 )
$ ]! {  {, C1 K& \
[$ @9 _$ U8 v4 K" q7 P. ]9 B! b
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
( S2 k* X/ v4 K- B], x$ J; \" V: h7 r. L; L  @
]
! {+ Y% F( t0 g9 I3 L0 ]" x% V! Glet j 07 ?4 r+ Z% U& o& F
let note 0
6 M& d' g) \7 S; Xwhile[ j < people]1 v6 i  ]5 H& ?7 D
[
' U- o. \" q! Lif( length (item i5 i9 @8 O! _) m6 u' H% U: a5 V
[trade-record-all] of customer) > 3 )

( X/ L5 y: w% I8 `[# `4 j$ a! V# T9 V
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)+ a' q6 S: Y' K+ W
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
" @8 }, q; t& L& d[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
6 v2 k) J$ F9 x" r5 J$ e7 k: h]% \8 _# m- O9 P  t) T6 c0 F! g
]
* o) T4 l$ C( o5 |" K) hset global-proportion note
" _6 U8 b- @6 \: y]! R1 j* Q2 I, p3 ?. f
end
3 e) g* R9 |$ K& D2 g4 x& F8 `' U0 q4 U. {( w* r
to do-trade
- i# }* A5 O7 U' b$ Q;;
这个过程实际上是给双方作出评价的过程5 O: M$ b) d3 R- L) D
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
5 I3 P; i+ z, P- V9 y; Iset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
5 H6 o4 {6 h' ]set trade-record-current lput(timer) trade-record-current& f/ z  H; i! ^' M; z# h
;;
评价时间" d4 l. I5 D# a$ i
ask myself [
7 m8 I$ a% t( x4 Uupdate-local-reputation
$ K% j& s" |  t; k. a3 ^6 Gset trade-record-current lput([local-reputation] of myself) trade-record-current% k- U% w" ^" x! O4 @- I. z- F
]+ v* ?' \& D" d
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
* M6 y. E( N9 h# t;;
将此次交易的记录加入到trade-record-one
4 a6 i3 h1 `) v  _. sset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself): z1 X1 u  c6 A( j, v
let note (item 2 trade-record-current )6 T6 s' j! f9 N+ w- f$ c' R
set trade-record-current
# `  D, u$ R5 Z4 l(replace-item 2 trade-record-current (item 3 trade-record-current))

0 j5 {) j. Y/ B/ sset trade-record-current  |& C/ E% v' T
(replace-item 3 trade-record-current note)
% \& X6 [8 u: y4 w7 K% ]5 `, s! m3 E
7 g/ d0 a! `3 h
ask customer [
7 A. m7 c4 D0 K' Supdate-local-reputation
" S, g: A& o4 N2 n1 M8 ]set trade-record-current! v4 i+ ~" d9 [8 M' R% g0 B
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

) U- |; _, |) i6 k]
6 f$ Y0 [/ k% f# j$ \5 g6 x! e: F& T; W0 p2 Z( a. W- l8 b
1 M2 f, f/ @8 ~  s7 V2 k) f# x
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
8 ~6 l9 {, {6 _8 z
+ m5 D& e* K. f' X
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))) e+ ], J6 M  C. X4 h2 x
;;
将此次交易的记录加入到customertrade-record-all
1 I" I, o( z- S% uend$ k, }8 h2 S1 E( R

8 W5 l$ `, g6 q. l6 _to update-local-reputation
1 t" ?- z1 k$ \/ o1 iset [trade-record-one-len] of myself length [trade-record-one] of myself0 K' B. v- K( u, y  f! p
) a, x( X- G1 S% T# O: K, f3 s% ]

9 ]8 C( o4 z5 E" t' R;;if [trade-record-one-len] of myself > 3

) w- p( b' L" w! j8 f$ C1 k) jupdate-neighbor-total
0 [' ?7 w2 u. t5 J3 ~& g0 T;;
更新邻居节点的数目,在此进行
7 ]. W+ a  Q. ]7 E) qlet i 3
$ k1 l4 Z( Y. R4 @# ]let sum-time 0
, t& E% M) e5 r6 h5 q" n7 swhile[i < [trade-record-one-len] of myself]$ }( D8 ]2 N( Y9 [! ~
[' o2 E* D/ `/ ?1 M' w- v5 {8 f
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ), c' Q+ {/ g1 {
set i
" O# b2 R0 \7 _; ^9 E1 P& @( i + 1)

, y. R5 P+ ~1 T. [! q]
: X4 _+ a; q' l7 W0 Elet j 36 d* U: X$ ~9 t. f9 P, j+ t& J
let sum-money 0
, ?! n% e  c! D* t' Cwhile[j < [trade-record-one-len] of myself]
7 T7 Q2 ?, J- G, n% L8 f4 q[
1 ^# o5 k  V! g5 Qset 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; m3 t5 y' k2 f, pset j
9 t' x2 A) f4 K; n( j + 1)
* X# k3 A3 y# B3 m% t9 J5 D
]
) H; T3 T& |+ L# h7 \' }) {8 Jlet k 3& u1 W& l. V) |. S- N
let power 0. v0 S) A: b) o0 J
let local 0
% ]/ l/ z. y/ v, y% |' u( owhile [k <[trade-record-one-len] of myself]
7 z; F; y& d$ W; E& K, `" d" I[
# J. ]# M* ~* L/ N7 S: ^* _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)   N4 F0 @: H7 c7 z* L( ~7 B1 F
set k (k + 1)4 V4 `! t' B! a
]
4 B) t; Y  F5 b! n: I0 h) S: V) lset [local-reputation] of myself (local)
$ Y, E7 K5 c6 J& L3 Fend/ x. |" I2 a& K$ ]
5 u7 B( I* {6 f" z3 l3 c
to update-neighbor-total; b/ x4 z: U* R7 H* m
2 m3 V' Q  H$ l
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]1 ~" A1 Y& m7 n7 Z
3 |# o8 h4 B5 {
( Z- r: p1 a6 G: m" H5 V1 o" s
end
, x3 _: L% s; `& t4 Z* o7 G
2 V  E2 A* {/ V9 Y+ _3 {" E! `. C; o/ B9 tto update-credibility-ijl
( x/ R) [3 k1 V  |, h' g4 m/ k, ^7 k7 V
;;
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。0 u+ [9 Z: ]# q% v, `8 |
let l 0
2 o. Q% `: J5 Bwhile[ l < people ]
% n( a8 e5 c! [9 P# M;;
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6 m# R; q  R! r& Z: s  L+ }
[
& e" z. B8 m6 K2 K! t# g8 slet trade-record-one-j-l-len length item l ([trade-record-all] of customer)* [5 }$ ]' z3 A/ s' W) |9 v0 \7 r2 m
if (trade-record-one-j-l-len > 3), T# o1 L; q. \, x, }' n
[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 l6 J. R8 B) r7 j7 E0 _1 V
let i 32 \1 h1 y, k3 _
let sum-time 0) h5 `! r2 ]# k6 W; a
while[i < trade-record-one-len]
5 _" y  X7 g" m- ?% r( {[
# }/ \% M: D2 f) A& z: L# l+ G/ tset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
- \# [$ m' T6 q0 u/ L% u# c! A' `set i) \3 Z/ f% a" j, h) Z
( i + 1)
4 ]$ F6 b, ]. N) e$ A
]
, W8 Z' F  `$ d/ u$ f- p3 Xlet credibility-i-j-l 0
9 t% h0 l! u* E2 G' V& m0 s: W: i+ e;;i
评价(jjl的评价); m  E3 c$ f9 y8 q/ }8 Q5 J
let j 3, ]8 [  r* ]1 D- y
let k 4
* J% j3 j& N) X( Q6 q5 }( T& Swhile[j < trade-record-one-len]0 W7 x. Z4 ~3 h, n
[
4 A* D  f, \* b! ~4 Mwhile [((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$ L7 b: H$ s# q+ d  Y/ g* v, z3 E5 b
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)
  @7 R* r; l) S) o" K- ]* Uset j
* _; I% d# |% \9 K3 [- {5 B( j + 1)

# h, v( t% r  \$ s* G]( `& ?/ z3 w2 a) N
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 ))  s' |7 g2 y1 T% q9 d& R) ~* q

. ?2 ?4 E" f3 t+ ~5 y. c

! b( V/ W8 Y9 {& `5 Glet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))8 p* b; G7 t- J' L. U: O
;;
及时更新il的评价质量的评价
% z5 T5 P  S8 y" [6 q: Zset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
5 P9 u, {6 Q2 e" g% `$ Lset l (l + 1)
4 f8 s& d5 ?3 f5 t]! o( }( y7 C3 c* T: l+ a+ W
end& T. T3 S2 T$ f. U1 x

2 @7 m+ N- ~1 S: v. ?1 hto update-credibility-list
. h  ]) Y4 M: }4 B( I. J3 dlet i 0
7 _! }3 Y/ x1 u" K% w! Lwhile[i < people]6 v# |& R3 `; ~, n' |: T. T% Q9 L
[& w3 o7 l0 h$ Z' i, `5 X
let j 0
8 h2 F3 c1 f! @let note 0
& M/ |1 g; k8 |7 Llet k 0
7 Z2 p; U6 N7 l0 U; k( W' X3 z6 g;;
计作出过评价的邻居节点的数目  Y* o# ^; V! O
while[j < people]
' n/ b0 ~3 }5 ?4 b# e+ j! c* U[
, Z+ i- f( v4 t0 |# X! f# Wif (item j( [credibility] of turtle (i + 1)) != -1)0 N9 B9 S' g3 p1 h/ ~/ Y; O
;;
判断是否给本turtle的评价质量做出过评价的节点
& y, O# a* R- c: h- @, n[set note (note + item j ([credibility]of turtle (i + 1)))
  k( ]: w. @& \;;*(exp (-(people - 2)))/(people - 2))]
  u# u5 F6 A- n! x8 J
set k (k + 1)/ ?# |# @: P/ H2 a8 `+ m/ I
]
+ {. ]; }8 s4 J' C# Cset j (j + 1)
4 V% l) m9 h4 R$ k3 ]]6 n  Y. _, [+ @
set note (note *(exp (- (1 / k)))/ k)
* M/ X) X/ q9 t" A& u" F, J  {set credibility-list (replace-item i credibility-list note)" b8 {" i; t" y5 E
set i (i + 1)7 H  F: Z+ \0 |" D5 b& S! {5 k1 r
]* w0 m$ P3 E. c8 H9 p' h' E6 f2 Y
end9 [+ t1 V8 U. G, I8 @: J

. y; G3 P" T8 E3 c% a& D7 nto update-global-reputation-list
- v! Y+ R+ ]& }6 ?let j 0
: @  x+ k; l! O% ^1 U) T5 |* |while[j < people]' G+ {# J& p# `( T: m; P
[- i& l! C+ v4 w& s$ ~) o- k
let new 0
( R5 x, |5 V+ J( s" ?: S9 I;;
暂存新的一个全局声誉
, B2 i1 f# C+ j4 jlet i 0% ^' R0 x& }% R$ T' Y; K
let sum-money 0
1 R  `6 c" Z: ~8 n( J2 nlet credibility-money 0; f: |+ P. @+ t2 D- l0 Z4 s
while [i < people]
2 h- }) M6 t2 {) x/ l6 L[7 o( @; @8 Q/ S8 [. F; B% B
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))): |+ w% {, w1 C; \- l8 L
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
# d2 K& f5 I7 \- ^5 N9 qset i (i + 1)! l' w# v. i. \
]- P) b1 b4 z2 ^. B) V( j, @6 ?1 d
let k 0
4 R# T- L8 z, s: Y' L/ O5 tlet new1 0
' v* J) e# l. cwhile [k < people]- l; k8 e8 \  b6 t  F. f! T2 r
[
; v5 _/ f/ |) H% tset 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)
3 x8 b" R' E8 V4 o0 A  k1 ^set k (k + 1)3 u4 g- I0 f9 o7 j: ]
]
: Y& _2 o  L( h0 f# F* Lset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
1 ~/ k9 o" e& i2 Y) k/ w5 J0 Cset global-reputation-list (replace-item j global-reputation-list new)
3 T; ?$ e4 z& P9 iset j (j + 1)
  y* @! S& k, V4 O0 t5 Q3 c]' }  _4 y5 ?9 P% v6 Q
end( f  ^  c2 j* W% E* k
% \3 k* ^) ?* ?
4 Z2 ~4 b: c; Y2 x. ]6 ~1 @( l
2 D3 c6 {$ C5 ]7 {/ t, Y
to get-color
9 _  R+ ~! u: X. E
5 P  D! _: E& U% M. j* b7 ]9 {set color blue

. b% b/ t8 H4 uend
, ~! Q) A) {! H0 e% a' Z  w# Y2 e$ D. g3 h" j
to poll-class, d% G' ]- s5 Z( I
end. a0 [  \% C4 u, Y: L$ Z0 y

- u2 w  U* }( L3 hto setup-plot15 c4 V2 T9 C# e+ S8 e8 e
" P2 o1 n4 e2 i
set-current-plot "Trends-of-Local-reputation"
4 A" ~; l& x, R/ O, y3 I$ \( I" @
, D" T1 v5 C1 v# ], v) J0 N
set-plot-x-range 0 xmax
) w% d9 b& O2 I4 _
7 F# n; Q  P8 t8 l, k+ s6 \, D2 e
set-plot-y-range 0.0 ymax

( ~: R  r5 W* q8 Xend; {6 x8 o- q$ u5 v# j- L

# F. ]7 O- g5 a1 t3 hto setup-plot2) Y/ U2 q% g6 F6 ~

% A/ A6 K) s% h- y/ `7 u  B2 Yset-current-plot "Trends-of-global-reputation"

8 {$ t1 W& x+ q/ l
- s* O/ `* @4 H+ @5 X7 ~set-plot-x-range 0 xmax
6 m$ a1 v- ~, d! h3 A; X
  U( l6 i; Q2 p6 o
set-plot-y-range 0.0 ymax

0 a0 ^3 D% R  d9 T) c+ H/ [! i6 Dend5 ?7 T  B& W7 n: m, r# C  u/ ~: S$ u
' r' M" l8 N( Q% b6 g
to setup-plot3* @& D- d- \. S' N% J
4 E8 a  z$ R: F4 \+ v; N) P
set-current-plot "Trends-of-credibility"
  o0 Z0 [4 u& {" Z3 k
- f+ \8 j& h( U/ R, q( q
set-plot-x-range 0 xmax
1 r. c8 f$ F5 i; w$ A& _, C% H8 K
% V1 A( I) r  K' c: U5 r) x2 s
set-plot-y-range 0.0 ymax
. n7 [- F$ ~$ ]6 R$ [
end( d, P6 [% J$ f& k( d/ ^, L

; i3 ?3 Z0 u* R; I3 Cto do-plots
0 Y) C' u! ]' Kset-current-plot "Trends-of-Local-reputation"
! l5 N( ~& F8 [! o& K, ?set-current-plot-pen "Honest service"
, R6 y( Q0 L6 Jend
; ?: D) d6 A8 q( O  j) b
) M  ]( n. M  G# 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.
$ w/ J' `8 T0 v# U  |4 T( _0 d  |& o1 s: l' Y
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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