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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:
7 l- L& C. |' U* L/ Tto do-business . M% i, P: B2 M4 e2 e5 O
rt random 360$ h2 o2 Y- P2 ~: S
fd 1
  v5 W% }) [2 n( [' n ifelse(other turtles-here != nobody)[
# o1 h5 D( ?* X" m# q/ ]   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.2 s7 i2 K+ ]0 ~0 |. N- P  X7 b3 X4 J
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ' O9 c, Z# q2 \: E$ K4 _' n8 i
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
+ r- O% [7 y) T5 p   set [trade-record-one-len] of self length [trade-record-one] of self* [. q( {& j* E! ^
   set trade-record-current( list (timer) (random money-upper-limit))
; `/ Q- @# B# _: c: C4 g- O, f2 _# R, p6 G5 Q) `2 I
问题的提示如下:
/ }5 U  a0 ]+ Q: G7 h" Z/ s7 P- U! _( g2 f% [
error while turtle 50 running OF in procedure DO-BUSINESS+ `- ?' @9 q1 r
  called by procedure GO7 C0 d8 K) c! {. [8 E
OF expected input to be a turtle agentset or turtle but got NOBODY instead.! h1 d* R. \' D6 C; m7 M
(halted running of go)+ ^/ O  k4 ?8 a. o
$ J0 p' x' A! `6 e+ i6 U# s2 V
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 X2 n3 f: m% N" @) w5 N& g0 u
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
1 t) Z' u$ S  F5 x7 y0 xglobals[7 R: b7 Q8 P7 J; a0 S1 w% b- ?
xmax
, \  U# q2 c/ @0 K% h  Xymax
6 {; B0 b. I! v$ D0 H. |global-reputation-list! K3 D+ }  l8 d" `# K
% p3 V) D. d+ H( w/ Z7 }' u9 V
;;
每一个turtle的全局声誉都存在此LIST8 ?' D! a  O! g, W* W; a
credibility-list
4 }$ h3 s8 q4 m& N- C* J;;
每一个turtle的评价可信度
2 g$ }$ M$ d8 {# G9 |honest-service5 d) y2 h" F8 e/ B0 h. a
unhonest-service
9 b9 W# F$ m3 i2 O) toscillation
% [: u: k  {" |: W7 ^2 @7 Brand-dynamic5 X4 I& J( B* P6 _1 w$ y
]
( z( I5 }8 c7 b( b( R# ~* h0 E+ H
% B, |0 Z/ V4 P1 k# x( A3 Z2 L& _turtles-own[$ R  X4 ~4 T: C9 T/ J
trade-record-all
, A6 J9 ]$ S4 X5 A% V;;a list of lists,
trade-record-one组成
' H; x% T, w' strade-record-one
  W: [9 s  x$ x' J;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
! e& E; X6 O) d% |# }  r3 Y4 W8 ^3 p" c0 q1 n+ N# l
;;[
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 c! m8 y. Ctrade-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]3 c, V6 a# I: w
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
! T4 b! F" z! Z* v* B2 \! Dneighbor-total
0 [5 K1 H$ }! g. ~;;
记录该turtle的邻居节点的数目- E* u' U" Z! C, Z+ S
trade-time# z7 p' _; q8 ^( p6 N$ l
;;
当前发生交易的turtle的交易时间
- B# W, B: j. n6 lappraise-give& h: x8 W% d. ~& s( f' L
;;
当前发生交易时给出的评价
# C; P) @& E5 rappraise-receive5 X9 A7 B6 [; i9 e, z
;;
当前发生交易时收到的评价
; D1 f( A8 A; g! x! @7 B. Happraise-time
6 d- P. \% ^0 \4 V9 G;;
当前发生交易时的评价时间9 `. L% E/ M. ]: [, y9 ]  x; d
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
- X3 ^/ Q' t5 I' g9 b9 dtrade-times-total
0 j, v9 \+ c- @7 R+ m;;
与当前turtle的交易总次数
2 S' U! _0 K# V  xtrade-money-total7 ?+ b1 l* I; A) g9 i4 V% b" V
;;
与当前turtle的交易总金额: z' @1 Q* x: i: A! G: R- S0 l6 m
local-reputation: \! d$ u8 Z% j! U
global-reputation- n4 I- a3 G8 J" t7 |9 x* A! O
credibility
8 p7 ^9 b: \0 t4 ~;;
评价可信度,每次交易后都需要更新. g8 H+ \3 L, i
credibility-all9 q- b6 c* j* F
;;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
- b3 ^$ e! _% H: E  N3 g1 v# ~1 d- H) l6 f: 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
3 F* _& Q  r6 \! ucredibility-one
) `$ p. e; r4 D9 ], \  z. u;;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
2 f8 Y# c/ x9 F4 Mglobal-proportion- O. q0 `3 T: f: B1 Q* c
customer7 ^' B  z* I, y7 U
customer-no! Z# m- V* a1 v. [1 I
trust-ok
* y! V1 k6 O2 E" a7 A- d7 I- Utrade-record-one-len;;trade-record-one的长度4 y# t! [; v0 E: r3 U! }# f
]& [, s- G* |( I1 R# L( o3 m
4 e8 [5 m7 |- W! l6 \) k' F5 z$ X% d
;;setup procedure
8 f8 S' B9 B! j- y. E' {- l
. e: S- d3 v/ n2 @% j1 K7 bto setup" q8 e# c( X) Y; ]' _; P6 h# Q+ m

3 @/ }) o! a* s% Sca

3 P$ ?% o% O1 K2 |
7 X2 |9 M2 V) f( c- K2 {initialize-settings

3 Q& W- [  u4 v$ _3 G  @) O2 Q' |! e, ^8 ^
crt people [setup-turtles]

+ D) q" {8 T4 ?4 c9 c
/ I1 R: `) b. R+ ^1 h. S" Xreset-timer

, `, O: ?4 i, ?9 C7 e6 l6 h( N: T
+ u0 a  w3 n; Q7 ^9 apoll-class

* h; i- A( e$ t9 `+ p# F- p% B, q8 H" W4 ^; m
setup-plots
6 k# z' `1 X' B% g% t) Y- i! P
0 |: m$ z& x; I# n
do-plots
8 @: \7 k: q5 P/ n( ^
end& Q$ v+ d6 ~+ Y* ]7 D) S* W$ T6 L1 j/ d8 ]

" I6 e# e% Z4 K* Kto initialize-settings
* a) B% j0 ~; g7 Y: @
4 `! H2 ]$ T2 G. Nset global-reputation-list []
/ y" W' I& X! D# U) [1 f* `
* Z  ^" h6 W" H, w, o
set credibility-list n-values people [0.5]

0 x7 J; i6 r- z% `' G1 A2 W! b/ ~( }; K7 \, o, P) l& F! k
set honest-service 0
9 M/ s3 J) |9 k9 ?
+ ^, \9 ~+ a+ g! e; j9 V8 y
set unhonest-service 0
: W7 S7 u  e& i2 |
  q" u% D; [' w( M2 `
set oscillation 0
' L! e9 w) y; L4 `0 W; y0 o
1 ^( Q1 L% i- J
set rand-dynamic 0
, B& Y$ N6 M+ Q4 ^
end; U, E" a5 M3 O1 \. v
6 n) C) B& X7 B
to setup-turtles 9 V/ J( h4 x. X) ^  u* }' w3 b$ `
set shape "person"+ ]% h. _! @4 J- @: v
setxy random-xcor random-ycor0 V6 S/ _1 e* V2 u* z/ R$ X
set trade-record-one [], i$ b5 v% Z0 j! Q3 V5 Y2 n2 R

3 i/ b8 Q+ \2 g0 G2 Cset trade-record-all n-values people [(list (? + 1) 0 0)]
0 A4 M3 A; o2 f2 R5 q

( f# z5 U; S6 l+ I3 ^5 R1 Dset trade-record-current []2 S4 M/ b! D6 D9 y% p
set credibility-receive []& Y* v0 S  C; h! w* ~, ~, j  W
set local-reputation 0.5
5 w. c. y; Q. \& Kset neighbor-total 0: A+ X$ E3 I7 l4 }' ~: d
set trade-times-total 0
8 n0 }* K. V+ C; w" rset trade-money-total 0
/ u1 o6 P! r) A2 `set customer nobody
( i( Y! R( C% v# }' J$ tset credibility-all n-values people [creat-credibility]
+ K- p& z. g" w9 C* F  ~; Q+ qset credibility n-values people [-1]) M0 T2 n/ Q6 Y4 T
get-color
9 t" r# x  Y$ i" m/ O, i

+ q' S/ R3 m' i9 ?end$ Q( ^" Y$ A; \3 }* o- l& T1 m
+ i5 s5 i$ v; X4 T7 n, n$ K
to-report creat-credibility
/ c  k: ?: l4 s3 K" l" vreport n-values people [0.5]7 L5 O# j& U' J3 K% P
end
8 F) i$ `! |# t4 A  @! j6 b0 f" A, p8 h+ x0 z+ I* ?
to setup-plots- A+ \. Q, y: A0 ?

" ~2 j5 c/ b) T/ }. Gset xmax 30
2 R/ c2 t# T2 G2 Y4 H- z! d1 j$ x

7 a0 q  z+ y/ f, }# Q  S3 vset ymax 1.0
9 N1 h: n4 N/ f, B8 k0 s; S: K- p
( ~. E) S/ s; C# l. Y% m! \
clear-all-plots

6 b! W7 f" J. L6 s6 ?3 N7 L
. \/ Y3 T" C- p. H1 s' Ssetup-plot1
- r% J- _9 }# [4 Y5 B
- d' F* `2 a( D% E. B: Q
setup-plot2

9 O$ M% h  z8 A& u6 t, n; I
6 \+ Q# o: }% ~+ P( D1 Tsetup-plot3
/ b* D( B% E! a' j2 B. a5 C
end
8 ]3 A5 I$ v; z; Z
: _8 `  M6 B* Z2 x;;run time procedures
0 b) R2 U6 R3 \3 z3 [; |3 R
# C  h4 d$ K0 ?$ E- dto go3 M( m" i, Y9 s  ]& S2 l
! A) k# j8 u/ D: w! m
ask turtles [do-business]

/ d% X) E: |; x% e) rend. _; z$ |, |' X3 [! t8 W3 j
. b4 U- o- L% r; S1 T) o
to do-business
/ J$ o! A8 S' G- i& [/ t% A; s
/ k% y5 o, M+ z
/ X* C3 x. R# s. U+ y
rt random 360

# A5 S8 p% z2 N5 o- y0 A
4 h5 P. n! f* Sfd 1

0 y0 I% X& c1 i" ~& [* C' Y* D3 ]. ]. {, ]9 G, B1 l9 r- t
ifelse(other turtles-here != nobody)[
, E6 X* Y# O, `4 ~/ e
* L- T3 S& T' E
set customer one-of other turtles-here
- j2 ]* c* l+ S% E

9 z. M8 j5 \% |8 h; w% Y* H;; set [customer] of customer myself

* |/ V  \0 X0 |4 b( f. ~' v' ?# b3 v! q
set [trade-record-one] of self item (([who] of customer) - 1)3 ]1 |4 }6 ]9 [+ g; |1 v
[trade-record-all]of self* l: E/ [) v6 X0 s% O
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

; @0 p: ^( H9 C9 B2 t# y
3 r2 H$ Q* H% q8 j5 b5 l# i0 Pset [trade-record-one] of customer item (([who] of self) - 1), ]- |6 [. B6 |
[trade-record-all]of customer

( c! k, n. R& @" p
' ]$ Q  B( y7 C. v2 {9 Q. K" Uset [trade-record-one-len] of self length [trade-record-one] of self
: @8 a7 a$ s$ ^( x
0 K  u6 U8 ?" `3 v  F
set trade-record-current( list (timer) (random money-upper-limit))
0 h0 l2 V' _& F7 R  h7 [* Z- X6 J
9 S4 L: E( a; E4 n: {0 r
ask self [do-trust]; s4 l! z  k0 A/ B4 {+ u8 @6 E
;;
先求ij的信任度, N+ j5 v* b; o) C

: c* q9 L: H' @; @# N: C% Y; V1 {if ([trust-ok] of self)7 ?; m  ?) ^* x$ R4 q
;;
根据ij的信任度来决定是否与j进行交易[  Y2 b: t) I+ Y/ f
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself& B* {$ K& K+ e/ |% l" R# S% I7 A  E

5 b/ |: z  n6 d. `! N9 Q5 I[
# I5 G! \3 i, M, H  M: o( m9 ?- B. z

* j  G: I/ \5 S$ Rdo-trade

* o8 {$ I; J' d6 T6 @% o4 q# v2 {4 v8 p8 |
update-credibility-ijl
7 U& a' ?6 ]( ^/ _6 G0 T6 B3 \3 m
, u, k3 z! B1 v* v9 a
update-credibility-list
: v6 u! O" p$ i; e; V2 g
( [2 E+ d5 s+ H3 j& Y

  U7 ^  B' ]6 F, Q7 _! m; p3 u( M/ a& `update-global-reputation-list

8 N) u% [! q" |6 d+ `9 k& |7 O5 [! R  v' K$ o' ^- _
poll-class

- J$ S3 A+ d- A% p
9 `3 s* O$ ^( C; Aget-color

# H+ v$ |& p. T) p, J
9 N- c) B  H, I* H1 y]]
, V4 O0 c+ P& f0 V5 P4 l' a8 \7 E/ N; _: o8 w& c
;;
如果所得的信任度满足条件,则进行交易' N" }9 M7 h5 G, l1 |: P' d

3 q, [8 {. {2 H. O[

4 t" [9 i# |: z* z2 \( l) Y
* C* u6 S1 T$ _rt random 360

; m3 J+ t1 n; n! h; k9 c0 x
& v. x' _* h' X, Z+ z9 ]1 xfd 1

# {. e7 K2 n2 l
6 v1 g- {- u. X1 X' C]
9 I+ m" I4 L$ x8 {

) ]; P6 U. ?% Kend
' G$ g* p- p7 L, O' y# T
3 K- {! D; ~0 ^5 R3 x6 B+ C
to do-trust
6 I4 T) D+ m: H4 Wset trust-ok False
' @0 j& f# H8 A/ x
! L+ F( G) D& W* a. b) x
8 d( B5 [6 p( q
let max-trade-times 0
: R) N" b$ t0 o- qforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
" n  e; w' G% W, L7 @8 xlet max-trade-money 01 L: o0 q- Q) k
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]- w1 V% U/ }+ b- D) V4 e* S8 q: Y
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
, ^, E8 ^) e; A+ H0 W6 c/ G. _6 B- Y) y  i4 ~( {: z

- z/ u* ^0 W8 E/ Yget-global-proportion; u: O' k  U4 ^0 y! D5 o
let trust-value% e2 V7 ~" t) c' ~
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)
) f  e7 a2 e6 e* q, s
if(trust-value > trade-trust-value)
) E* f) K2 R! l: w3 t' r( v[set trust-ok true]* r# I' |0 ?" T& ?5 Y- e# ]; Y; r9 U
end
' P# e' K( c7 F- a* Y, e" ~8 `- P+ t+ u1 V
to get-global-proportion+ |8 Y- G3 @( C* ~
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3), I) ?9 M, @6 d/ F( ^
[set global-proportion 0]
) Z+ d% w  _1 I7 R* k$ _[let i 0
2 V# Z( F) M$ o- Jlet sum-money 0* P7 s6 I( R. l; I( ?+ L: v
while[ i < people]
/ N3 o* s  e7 x; _0 Z# Q, _[9 `) B; k# Q: Z$ R2 m
if( length (item i" `; n# h  X4 g  ?! W
[trade-record-all] of customer) > 3 )

8 z6 U# L0 O7 m! U  O* O* O5 e* u[9 E2 M! R1 Q) ^. @% q
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))& `* x% B+ Q8 j
]! L8 \" F' N" E
]
9 `, O, f" y+ flet j 0# u0 T7 J2 m9 g) x/ M
let note 0  h  S% u( a( `
while[ j < people]
) @3 g) u' @0 z$ C[1 k2 i+ ^: H# D2 ]0 Y* q' D4 ^5 I3 z
if( length (item i" Y+ q2 O# r9 {
[trade-record-all] of customer) > 3 )
0 m5 e% |, d% J. ?
[1 R5 Y# m  o; I% g' z2 O4 A
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
  j/ {. x$ Q8 V4 ~[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]: B. w! y# @* o  G4 k! \
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
' n; _8 n1 }& d( p, G/ m]0 e8 w- l, t+ @
]6 ?. I  q" h4 I3 V
set global-proportion note
- ?" m6 H  }0 M( l& f6 N% Z5 V]
. o9 Z  F, g/ N9 m9 m* ~end
( s- L' T/ ?" f0 S( |" B( S3 H3 X# m9 f1 m
to do-trade1 S0 h( m; g# O# r# o
;;
这个过程实际上是给双方作出评价的过程
& S8 k, i8 z8 V5 I# k' Tset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价- w6 O5 l: H* c$ H7 s% J- I/ ]+ V
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
& g, D4 [3 H( X7 qset trade-record-current lput(timer) trade-record-current  F* Q. J+ o' n5 A: f: [% }! m
;;
评价时间+ L5 O; {  P; M0 l$ v
ask myself [" g* {7 L- V* ^3 g& n
update-local-reputation
5 z$ G2 I& v0 \  Dset trade-record-current lput([local-reputation] of myself) trade-record-current9 P" P! t( ]( `. t7 E; h& T8 z9 l
]5 ^5 k  d' L8 r2 P  Z) X& K
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself, G& t, W. m1 X6 r
;;
将此次交易的记录加入到trade-record-one
* x3 ?& s6 ?; l+ U& A1 Mset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)- r! n" ~; c8 ~$ d7 j# B' \+ z
let note (item 2 trade-record-current )
, T8 S, ?9 A  U, }set trade-record-current* V: @; g9 Y' w
(replace-item 2 trade-record-current (item 3 trade-record-current))

/ w; O3 H5 X& t; Q# U0 K  xset trade-record-current
- Y* H- ~% z8 v, f/ C$ o" e(replace-item 3 trade-record-current note)8 C) `& ]4 E5 u7 L6 U6 U
$ e( s: K4 s' e5 J! C
" m1 S' }) f& \( U- l1 q0 x8 p
ask customer [& l7 |( }- i7 u  _7 E
update-local-reputation) P" V, k/ Y5 [1 d$ ~" _
set trade-record-current
0 f/ B) C1 K2 s2 O1 {(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

+ C0 ]/ M- H4 v- []
4 c6 x) f# I6 R0 s8 N, ~& @" _
* y9 K% p& y6 h$ {( U

( b8 {( Z! `5 L7 B  iset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer- [) q3 Z2 [7 h. V
! p; Y+ k) Y/ A) x* t, N* H" |: H
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))! b5 Z4 q6 ]( E: \* _2 G. j6 X) K
;;
将此次交易的记录加入到customertrade-record-all
/ A; {- C# j9 \4 v4 D9 }: V- a7 ?end
" e9 Y5 T5 K" E. W0 M4 U) V. B# K/ x5 K: E
to update-local-reputation
  k# [( o" K' f0 W" c2 I0 q" p# Cset [trade-record-one-len] of myself length [trade-record-one] of myself
2 v2 P8 ]+ G) e2 a' g5 ~! w8 g5 \# l4 s% j6 x3 B$ d4 H

$ F. e6 j* Q. Y% L;;if [trade-record-one-len] of myself > 3

5 N) X/ ?6 S0 P( Z) A$ A, Rupdate-neighbor-total) A& t$ O+ q5 T% U; v  R
;;
更新邻居节点的数目,在此进行
0 F# l4 ~) B/ S2 @/ ylet i 3$ s- z1 m& T$ w! k! Q7 h
let sum-time 05 Z9 o  y2 N/ M( N! T6 _6 e
while[i < [trade-record-one-len] of myself]' r+ [3 @% m$ p
[
  F7 [' ?9 }# ^+ R5 Eset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
* y6 _9 G7 n; t6 i  fset i) q$ ?. B0 B! P/ c* o1 `% o2 e  H
( i + 1)

3 {- G' m$ y  D+ Y1 J6 C$ K* B8 B]" L$ E, a/ y* p" l+ ]
let j 3
3 Z1 V$ n8 S( J3 q; H, D4 Ulet sum-money 0$ k2 {4 B3 g2 ?. W/ }" K
while[j < [trade-record-one-len] of myself]
' r& t2 ^( q9 r8 b3 `1 U) n[/ f5 o) t* m( @: N6 [+ 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); H4 {1 l% x0 }; k6 M. M. o9 ^/ b0 @
set j
( C/ e# n/ S* N# s( j + 1)

* _: w- D4 D8 }: E7 r% F]
+ |3 u# p; ]# G& f) |9 @$ `8 ?let k 3
& j  ]: J+ W% V: J  Glet power 0, h8 ]8 M5 ~3 u
let local 0
7 a4 i' E" N. L1 m$ zwhile [k <[trade-record-one-len] of myself]1 S! Q# y- Y; R
[
" M  f9 w0 _/ T9 B6 A( Tset 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) , q: M& s: _  Z& q& R5 [
set k (k + 1)
4 S* g  {$ c. Y7 ?9 J& A) E6 J]
* a) w# d/ u- H' b' s9 yset [local-reputation] of myself (local)# S+ u/ ^; F( Z, h) m2 G8 x
end
4 X: ]! _7 r3 ]: t. |9 h  T
9 I' W: d+ w3 f7 `* G: Kto update-neighbor-total
  P, M0 {+ }. J! I. ~* N7 K+ H$ W; \2 h0 Y8 |+ m! y( L3 F6 a1 M
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]9 g* z2 j0 M; u' i
8 z0 f3 U$ g& o6 l9 o* |, D

( t2 E( o, a& W  I, O- e- H* w7 t$ nend  C7 X" e! e, g: D8 M
5 k- }2 i9 K+ R/ i; n
to update-credibility-ijl
& G( B, k/ B# L* o% _. e. c
: y3 j8 }8 M9 L;;
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 ?  F9 n( Y+ {: J4 @let l 0% u# X( l4 i* h! Y" s
while[ l < people ]) l4 W) q& \" N; W8 v' q% ~3 U/ m8 O
;;
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2 H+ M; G" Y: L: h; Z
[
$ V' B% h7 ]/ }9 j( B, f" Nlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)6 k; g- ~1 t" Y9 I
if (trade-record-one-j-l-len > 3)9 n7 H; b" v+ S2 i) |' x4 z
[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
6 w) a6 `4 x: i5 @let i 3
6 A/ r) B; }5 \* v- l' q) z1 hlet sum-time 0: b9 c$ T2 {) \- I) e
while[i < trade-record-one-len]
; {2 I0 g3 \' I7 o& A3 C" i) S[
& h& v9 T- G$ n5 f4 b. Y3 |set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )' j. Q. {( W/ O) Z/ C, b
set i/ c4 p# x& U7 y; ^% [& _6 f
( i + 1)

9 [3 J& T, a. z% X]0 ?9 s& v& F: _4 E$ v' w1 W$ |
let credibility-i-j-l 0- G. C- S: C! P( X. ~+ h9 @
;;i
评价(jjl的评价)
# x( E- r4 E* ?. n4 hlet j 3
" O8 ~, y% \( h2 W/ e, K/ z% `let k 4
0 f2 C. S  d0 ~while[j < trade-record-one-len]/ J/ T$ V. n1 i6 {% E5 w" o7 t7 c9 i
[- }+ B. Q5 w* g0 E" j8 C
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) U6 Z' K' T" Q; u# i0 U
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)
, k# r0 D$ W7 |set j
9 X! D* G; G" p. j, S4 ?8 P( j + 1)
+ a* X9 G: f% n0 h
]0 E" |+ w/ s6 A; d8 C# o
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 ))3 s6 G, y2 X/ p0 t# z
* d% a$ @0 @+ k: y- e* [6 A
+ S$ T2 v; f0 i; O9 I
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))! R" @; G1 K3 z: Z; w& a; Y
;;
及时更新il的评价质量的评价
3 g8 p2 T: q$ M+ Nset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]8 @! {6 o6 {$ k5 j% C- h! l
set l (l + 1)8 `3 x: u& d/ ?0 C! a
]
' t) U6 X2 S) r. tend
  O5 J: w: v; m0 V
% M+ N' _' n; m$ k, Nto update-credibility-list6 d* c* \1 Q& n
let i 05 {& [" v0 }$ q" J1 j" p9 l' B" Z
while[i < people]
& x) D6 |# {. `6 v[5 Z' {. m" W5 x5 X4 {
let j 0
8 p( j6 R6 _8 Y2 ~* n7 t; nlet note 0
6 L$ d( a: P  _) O5 Y( B# S1 Elet k 05 D8 d5 v' S8 Y7 Y" T, r$ p" I3 r; {
;;
计作出过评价的邻居节点的数目
$ `( O3 s; W9 D$ c2 `; mwhile[j < people]; l7 e0 |2 u& K+ z4 Y  M% d
[: P, o5 L1 b) j# q: p( u1 m! ]: \! H0 D
if (item j( [credibility] of turtle (i + 1)) != -1)' Y- p1 t$ d  R% g, U2 d
;;
判断是否给本turtle的评价质量做出过评价的节点
) @5 P3 u' M- m1 p[set note (note + item j ([credibility]of turtle (i + 1)))
# \5 t9 N$ E* ?# p8 ]% m;;*(exp (-(people - 2)))/(people - 2))]
# l2 x8 o& d' L& F' o8 C
set k (k + 1). b$ ]& }) ]) q# Y& r' ^
]5 B' b. n1 O9 {# Q9 B" N  j
set j (j + 1)
9 \0 ?( O  H4 e( L]
* M" ?! r/ h. t" i& h& }/ N4 |7 r5 ?set note (note *(exp (- (1 / k)))/ k)& ~. p* F/ V# a6 S+ Y' g" z" B
set credibility-list (replace-item i credibility-list note)( E/ Y+ L) V6 H. e+ d
set i (i + 1)
- g' _$ F0 d- Q7 j5 }; l# L]* o$ C2 @# T7 M: N% Y
end4 ?, Z" y6 ~6 h' q

9 {  f6 l1 Z( cto update-global-reputation-list
  ?7 k4 |6 R: R# d/ |' vlet j 0
4 ~2 \% o% S$ h" W( Z0 R- D' `! M2 twhile[j < people]
/ w; j7 W) N. M5 S5 G/ Z[  D2 Z& T8 F+ J8 _
let new 0( S( y0 g* w- \4 ~
;;
暂存新的一个全局声誉& V* [& @/ t( q( H! K4 y
let i 03 q$ o! h4 k5 C% n) c0 a) t  p
let sum-money 0" [/ g. D3 j+ T! N% q: B
let credibility-money 0+ |2 G+ s; F! p5 M# M: k+ Q
while [i < people]# a) [, y* f, ?1 B6 n# D
[
8 }' d* n0 a$ b5 Hset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
" {& z# ]& J% Uset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))3 c! N  b/ I2 T6 ?8 ~
set i (i + 1)
$ c) B5 ]& U# Q) Q+ O' h]
" F1 {' B3 \3 a, u. rlet k 02 Y% Q5 i: J6 g: R) c# k# U9 |
let new1 0& p0 q- G. ]7 n1 p# `2 _8 N! S8 U
while [k < people]
4 p9 l7 {; s7 `' _; W[7 Y# w& H: w* F% l
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)! Q, n- _; {3 ?; @6 }
set k (k + 1)6 l* n- e7 f- l1 h, k& P
]+ R, z* {* M/ Y/ v3 y
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) / T9 Y! ^" v1 W$ q
set global-reputation-list (replace-item j global-reputation-list new)
, X! O6 R0 P- w3 D7 U! `. jset j (j + 1): Y' E: o: }% j/ K& y4 B7 R
]/ x9 V/ z: l' H0 i" ^) \1 m& o
end9 G; g1 I* S3 t* \6 _
( g3 E+ v* P# ^. q( Y; Z, o
  A) k! n( T8 U/ s8 D
. S: B* a: U5 _: U5 y) o7 s
to get-color3 ^! H: {# `; h- ]5 N+ t

6 L7 @. ?& K4 N3 w" Cset color blue
' F  J4 J9 k8 _7 R
end
5 k3 B. \  R! w# d9 G4 l
" m7 F. w) I; s7 Lto poll-class8 D% r- p1 n0 i9 y7 P
end0 f8 u; Q; `; P, h, C7 g
/ Q6 @8 [6 ~( e3 J, j+ }* H1 N0 z! m
to setup-plot18 K8 M$ z. v  b4 K

6 I1 b" P1 z5 R( A4 {2 a% fset-current-plot "Trends-of-Local-reputation"
6 _$ p3 m/ }# a& Y' B

/ [7 a. Z8 ?6 q) T/ v6 N/ Uset-plot-x-range 0 xmax
# b9 U0 g0 d. x& G! Y3 N* m

2 y5 v& @1 `+ e* Nset-plot-y-range 0.0 ymax
: y5 G* p$ Q8 v' T1 D5 e
end
* e7 }* Z* P6 d
! d6 C9 E* i+ V% |1 h6 a+ r9 s+ Jto setup-plot2
# u% E. e  G6 m  T( q+ D$ w) L& r9 T+ c! A3 }0 Q1 I
set-current-plot "Trends-of-global-reputation"
0 s+ ~, w" Y4 u- c! X4 \1 e

6 W/ {, B5 G& Z) Sset-plot-x-range 0 xmax

( @. i9 v" x- p4 v8 K" Z$ P& r+ H
set-plot-y-range 0.0 ymax

! n1 P  k; y" E% l! u" Zend
% I  S1 D1 X+ z4 A& @; j
+ |5 W; _0 H/ [3 r% mto setup-plot3" j6 o) S% ~" t$ s! X% e1 i

0 V  T1 p; x# x9 o% }- kset-current-plot "Trends-of-credibility"
8 b. \+ c3 z' v  b' @) r

: u3 R  N- {0 H  Pset-plot-x-range 0 xmax
6 A1 Y$ y$ g, M1 n$ M3 \' ?
* j0 r1 H: ?% T6 t9 k
set-plot-y-range 0.0 ymax
: I' }9 w9 h( v2 J) W, p
end" h* }, s/ m. `& `/ ^
! D: |- k6 [) ?$ [. H( C
to do-plots
' l$ f+ c! U2 |+ @3 M, ]& B$ `set-current-plot "Trends-of-Local-reputation"! B; _, f9 r( {5 [, z% s
set-current-plot-pen "Honest service"+ k; B: E6 `! d, D' V; Q1 ]
end
" y& F* X" ]0 F3 J
* o$ Y* F: M2 E0 T) ^[ 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 A+ ?  N# e& m5 D( a9 a- c

/ e5 D. x2 m$ S: a$ B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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