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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:
. ^& W8 k$ y+ {- ?to do-business . d; R3 c/ C( @' W8 I' q% F
rt random 360
4 W3 }" U2 y5 K" E" P# {+ E fd 1( a1 }. z* ~& b: \; N
ifelse(other turtles-here != nobody)[3 L& Q  [  O4 S* V
   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.8 J0 ?* `+ Z" g3 @7 {% w
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
& }2 L8 P; G$ {5 v, K   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer8 [9 Z2 @+ O2 a
   set [trade-record-one-len] of self length [trade-record-one] of self9 ~' a4 P4 G$ H
   set trade-record-current( list (timer) (random money-upper-limit))
1 L( A- L+ U- X5 h% x+ [2 s& p1 y% B* n. p
问题的提示如下:% o0 [+ K# ]& O: y; v' s- L9 K' p

! u; U6 x0 u; t, ?6 B& Yerror while turtle 50 running OF in procedure DO-BUSINESS! |6 e+ {7 d7 D3 n8 ^( E; i8 D
  called by procedure GO( |) S' G+ c; Y/ ^
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
3 K4 F0 d( O: g; R8 v
(halted running of go)
, a# k% u4 \( m8 l1 p# y
/ W2 p: u' s3 o  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~~
! V) I; W4 v: e; n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
, l- S) Z3 W( D$ l2 W; a4 bglobals[
3 `8 Y5 F2 u. a$ Y1 ?; Oxmax
5 p! E/ q' q$ V/ m0 C5 Mymax' l/ @: @4 Y5 T
global-reputation-list# p/ M. B& L# k) Y9 g

  `& q  c9 v& B; V5 J  Y1 P;;
每一个turtle的全局声誉都存在此LIST% q7 D( T5 O! x0 D
credibility-list
! P5 v- d6 V1 O  x% H) d& t3 x;;
每一个turtle的评价可信度
) O3 a" N9 u2 n2 w' B6 S3 C5 Jhonest-service. I) ^5 H+ c/ [: v! h
unhonest-service
0 ?9 C) z0 V6 n( G  xoscillation
$ @& E/ x( _& M) u. E3 Srand-dynamic
6 V* v0 E' n: d1 X! G2 l]
$ p* n$ E( O9 w! t7 J$ f- N
0 v& l! d( o# @) y; Z3 P- O: Lturtles-own[/ B$ H5 _0 |1 \! N% j" m
trade-record-all
+ b6 I* O/ X  P;;a list of lists,
trade-record-one组成
6 W* j9 v7 X# ?- B( G! L7 Strade-record-one6 I! k, g3 Q) i0 B
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
; H0 Q& z0 L6 a$ S& C! z; L! S/ N4 v& N1 N
;;[
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]]
8 A' r' y& I  N9 S. M' r! U: ~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 y* ^- I5 a! E- q' 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
" E& Z/ z9 C2 u) O& `' Z) W4 h) Mneighbor-total7 K) K8 s4 i$ Q
;;
记录该turtle的邻居节点的数目# |7 l7 W/ I2 F9 F
trade-time7 z  A; d% R! o4 u' I
;;
当前发生交易的turtle的交易时间, d, }0 x- F+ o9 g- D* P
appraise-give
) s& f3 _& B- }4 u3 W; @;;
当前发生交易时给出的评价+ Y0 o3 o8 U! M) J2 W- j+ D
appraise-receive; Z" y! {- L" b$ L4 z, g
;;
当前发生交易时收到的评价: Z3 E: u& [- u1 n/ T/ j
appraise-time& J( A8 a5 x1 a1 c
;;
当前发生交易时的评价时间
3 O# g9 R& |  c, p9 x8 alocal-reputation-now;;此次交易后相对于对方turtle的局部声誉  l& U4 H1 q# j/ _! j8 l/ Z- k
trade-times-total+ M3 E2 o, ]; S& N) x) j. d
;;
与当前turtle的交易总次数
6 ]6 N& e: y' L, ]2 Itrade-money-total) |- E$ P2 r) Q1 H( X4 H" L
;;
与当前turtle的交易总金额
2 i3 j( q1 P8 M  ]. U6 Blocal-reputation
* L3 o$ P# E- R9 N1 c' Oglobal-reputation) t! b$ J: N; i1 s  B# X
credibility
/ t# c+ b" K' s5 I+ V  s;;
评价可信度,每次交易后都需要更新. x! H5 S0 v7 f2 ?1 C1 R+ C2 F. C
credibility-all
9 G7 P, x0 W0 z- H. r2 c7 R;;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4 S1 `5 j; l7 m4 `3 z5 x; b: U) |
! W  K2 O; X: v) Z2 f( j- ]
;;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
' f6 r& h! C+ z/ t. Jcredibility-one& ~) L0 j. L  s9 t
;;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
  h; {7 Y- V( }. u% {% ~  [  Wglobal-proportion% D, P$ u1 t' I
customer/ F; _; |/ \7 U7 P) m
customer-no
( N& T2 R) w% z9 v* |# p/ Atrust-ok
+ H4 r% g( a! y0 }. t2 }+ jtrade-record-one-len;;trade-record-one的长度
# W6 i( q8 A. V* W9 K0 ]; P. `]& U' n- l, L$ b
# x# F; K" V: m) h* z5 [
;;setup procedure4 ?* G! f: Q+ J7 m. r* v  p
4 P# o  w! ^+ ~& l" c, O% ?5 i$ i
to setup
$ j" z+ A( J1 y9 k- P
8 {5 `  S8 |4 b# Aca
/ ?1 E# C9 t! m! P' E5 L

0 @: G% C# W( x& B+ p' Vinitialize-settings
/ K0 r8 V2 ?' J4 ]

' x8 H- W) ^+ W! Jcrt people [setup-turtles]
% V3 n  r+ a4 _, E% s
& }  U. I( t. ?  C; s( C4 ~' s
reset-timer

/ F  c7 u: m5 m3 h& @
: Q- Q0 U- ?3 cpoll-class
: V1 J/ l3 V& g+ ~
6 {( g6 |5 k: z$ x! H7 w- d
setup-plots
6 t) f4 l7 m1 p$ I2 _' ^- s2 F, U

1 y1 V# b0 Y" k0 M5 Jdo-plots
( @( T, a" f, i9 \2 R
end- J( B6 A5 a$ }* F

3 |7 e; n! F8 ?  C* z8 Rto initialize-settings
( D0 o& t+ R* t/ }* J2 I0 m3 R' b( ?- J1 l; ?4 o3 S
set global-reputation-list []

" z! @. J8 k" H( |4 \
& g% V$ e, u: K5 m2 ~0 t/ yset credibility-list n-values people [0.5]

2 y+ o6 `* G- P( Q. W$ _1 g+ @! ]) n5 P  x3 X1 [
set honest-service 0

1 e! ]* h& v4 Y1 p* t7 |6 }( l2 U- s3 P7 o' {3 d, L
set unhonest-service 0

4 X6 z; y2 c; W7 `6 o" c$ t5 s3 p: y* W# k
set oscillation 0
1 ^0 `  H& }* U+ @. N6 \9 B$ z' Y0 @5 y

# g2 _% J( I. Xset rand-dynamic 0
2 Y6 h* [" Y* z  L7 s9 K* Q2 n
end
) ^4 R6 U# T3 w) }/ i/ [" z) z8 @0 P& ~3 N4 q, U$ I1 l$ e3 D3 T/ y* e( z
to setup-turtles 1 z! r2 Y/ P" E+ g, v
set shape "person"9 ^% O3 B9 N  D* P* f
setxy random-xcor random-ycor
. i- C$ {; E% D, y$ P* n  t3 Bset trade-record-one []
- Q" l# Q1 Z) ]6 B6 R
1 s, h6 j" R; V$ U
set trade-record-all n-values people [(list (? + 1) 0 0)]
7 m( v& F8 N4 `+ K& E( Y

. n: Q" C" V# ]/ k: X& Iset trade-record-current []
. m, e( U: @9 q* sset credibility-receive []
' p/ _3 ^" K4 S5 q1 dset local-reputation 0.58 Z/ j2 f: k1 \/ [
set neighbor-total 0* H- y- Q1 }$ \. J* C
set trade-times-total 0
$ J8 j* y) n- G* }/ I  K: Hset trade-money-total 0; ^% w, d1 ^/ q- H
set customer nobody
+ D5 v" {* k* B' M2 Uset credibility-all n-values people [creat-credibility]
# T9 f; W! ~- |set credibility n-values people [-1]
, q1 `( T9 z4 o: |8 I: ]* Hget-color
6 P2 I, d+ E! L' w+ Y0 N

- K9 l# D4 `3 x4 Q' p' Z3 j# Fend# @2 I/ F) q) o! M+ `8 Q

, ?! \& }$ P$ o0 |/ O2 {( T/ ~to-report creat-credibility
$ q% s/ S: j3 X" ?3 p# g3 Z  Treport n-values people [0.5]
+ S5 c# q$ `) A* t. D. xend1 i/ ?) @6 z$ d9 j# [
8 k1 M  s/ a4 U7 J. \
to setup-plots
- B. o: U5 K. ~8 o
6 A& k* e3 g  B5 y* Qset xmax 30
& V- N1 U5 z, Z5 x" g  S5 F) O9 a

* u' ?" @' B6 c* C- }. Y0 o; kset ymax 1.0

. L. V& O1 R: ]. e  K' v* d! X# d$ z; _# z
clear-all-plots

/ \) j2 F  f1 l5 D2 R. s
) k3 t$ p1 z" m1 s( N( j' Usetup-plot1
; n% |) G4 R( t8 Z9 x
8 v( S7 M% s  m4 S- S2 o
setup-plot2

; s7 [- N) H) \- I9 l4 k* y
, Q4 M- F3 ^% f% h/ A" bsetup-plot3
' g+ e$ R, f9 z8 G/ m& P: S
end
8 t4 B, g# p/ s1 g9 P& ^' o. z. t
: @3 y* O/ \! y0 s0 D6 D;;run time procedures
  r4 ?2 I1 N9 w0 }  o
& k6 [7 b: W9 h$ L  Eto go
0 E! b% E) F! [- i. J" S/ f' n% @$ V6 M) Z! R! y0 K
ask turtles [do-business]
& A, ?8 ^8 ^5 ^$ G+ ]3 E
end7 q/ S+ J  C$ X' s) `3 s
: Z) M" Z+ T* D4 C7 o$ T, ^- {
to do-business 5 Q3 p4 A% Y- T. q* O! t

0 B3 @; N* f) X/ N; [) l) H5 Z0 e# F+ n
rt random 360
" A# x- k1 ?! f' |) P& |. r

  w" U, `, ~% [* Qfd 1

: \* ?7 L% y) l& n" |9 r
2 J, t. h7 x; i. E% s' [  Vifelse(other turtles-here != nobody)[

& Z2 c: y# z3 l, j# H6 x$ L0 ^9 j
& x# p" C! `; `, }. w/ }set customer one-of other turtles-here

( ^1 o/ I6 O2 L8 `: W% S7 T5 s) w. T* Z% j! C0 j) P
;; set [customer] of customer myself
  E7 r5 o+ M' Q/ o* [: k0 n7 G' s
# L% l8 s- N7 l6 j1 H+ t4 w
set [trade-record-one] of self item (([who] of customer) - 1)% L) y) e" O$ V0 S" _* ?0 [0 P3 p. ~
[trade-record-all]of self
6 @8 c$ q* O8 R( d;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

, d6 {/ g7 d) V' ]! z
$ G9 [2 I' i3 Xset [trade-record-one] of customer item (([who] of self) - 1)8 ^& o  j. W' X- B3 J; n
[trade-record-all]of customer
9 B' X0 x& X0 G1 ^, n! o. }
9 n( m8 E6 S3 w/ N/ j8 @/ n
set [trade-record-one-len] of self length [trade-record-one] of self
2 a6 ?; \" ]# a) ~2 [# h9 I
% @, I' `; O1 |+ e+ C3 P
set trade-record-current( list (timer) (random money-upper-limit))

' G2 ?( c" Y0 T9 [6 }' Q0 N4 h7 L8 l% a# l
ask self [do-trust]
$ R; I+ q5 ^, ~! S+ b. {) G4 a" ?/ l;;
先求ij的信任度
- i8 X% o1 J: m8 Y+ H1 X+ h' y+ b. j: P, u
if ([trust-ok] of self)0 p' s2 c4 b$ N5 B3 }4 z; q
;;
根据ij的信任度来决定是否与j进行交易[
$ M5 H; }; Q% n+ X; u# k3 P* M! Lask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself+ s" @/ m; ?& W% w
  E8 W$ N) n' r
[

, u" I8 I) t+ Y, t) e) Z- z6 B, }8 `# t! Z, U
do-trade

! O: a$ ?' F  ^  W: {) O  y' t8 b, [* ]; J
update-credibility-ijl

) j4 C0 v  J( G* T' \" P  w
3 Q1 h) |0 x6 H) ]' f) Eupdate-credibility-list
6 m& J( w7 c8 u4 c/ O
/ w$ h. ]* K) c, b" [' @, R; }
  z5 J( c0 u$ x
update-global-reputation-list

5 ]+ |3 [! e1 ~% d1 Y/ ?/ i; f
: t+ \( X4 h' opoll-class
" ]8 O2 J8 n1 t, ^  k1 y! Z
. L" r* z6 \0 i% K
get-color
  @+ c( O# L/ R% e
" G' v7 t- k( H  q
]]! l% n" l( \, F# A, P; _; i

( U/ j8 P4 {- u8 A;;
如果所得的信任度满足条件,则进行交易
* I/ |3 }( r5 e7 k! |4 `. @2 e" d& n
[

& b# |- q& K( `0 C2 g0 T# m' }2 O; h2 Z* r( f+ \. e9 d2 z
rt random 360

: d/ T5 A2 p8 _8 Z3 B' g4 U0 Q, y6 K3 I- q$ a
fd 1
, |  O# N' k$ z3 U" M0 h

, B0 O3 `3 }, h, ?4 B2 S2 k]
. s% d+ X2 i0 B, S
. w4 c7 M* B$ x- O
end

7 d  p, f* {6 U" s: t
( U& V+ d4 U5 ~0 G8 rto do-trust ; S1 ], }" ^8 }; s9 I# A
set trust-ok False
( X! `+ J: o: ?3 j4 g1 q0 _- w; J0 J  H9 u+ y+ d* T, X

6 B1 V: j2 }2 t9 D  K8 Qlet max-trade-times 09 D/ }( K# P9 d. ^: B/ q) p) w' J
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
5 ]+ X4 d% W# Blet max-trade-money 0. P/ v1 t- e. }3 [( e
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
* p. ?  ^, z% X0 Nlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
* f; W3 h. z/ V# k6 F  f
! f! {+ P/ G' P% y0 Q

5 {0 ^% W8 [( Z$ ~- C: iget-global-proportion
8 K9 ^1 b8 ~0 {/ ~let trust-value
1 I: \2 T5 q0 f% o$ p7 Z9 `" Elocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
$ c- W0 i+ {& z6 h) G; d3 z2 F8 U/ N' M
if(trust-value > trade-trust-value)! ~' v# a) b: K' V% H% c" c2 w
[set trust-ok true]
& ?6 {4 g( a: i% P8 Send
: v5 i8 U, }+ H) e+ C, v( |
2 C% `& O* v% uto get-global-proportion
% P; I9 V% }! Z7 E% _$ g6 x6 f/ t% S2 g& yifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
. m: v( Y# X) [5 Q[set global-proportion 0]
8 C- E9 f1 p5 V5 B[let i 0& D; F' C) C- w* ~
let sum-money 0
; a% V; n7 K5 x3 \9 D% swhile[ i < people]# A4 a! G) ]* o. D) A$ [5 i
[
" G; l3 y$ h+ \" ]: Oif( length (item i; U1 U- z! v( u9 P) |9 k2 p) o7 d, Y
[trade-record-all] of customer) > 3 )

+ V: G& q6 ]9 R) J[( K; ^3 |. }3 l7 L
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))0 }6 A& d' d% ?) U; @& @
]
/ ^+ X" w% L9 {4 _$ P8 h; l]2 {1 g/ J6 d: W& u
let j 0
' V+ e& [& x  {let note 0& o0 E4 P% ~( n! P! \: y0 X2 G
while[ j < people]
# I: _, A  z5 @/ f[
$ p9 r) T' t4 a( M! [8 Q' J8 ~if( length (item i
3 _0 r4 ?2 d* |/ N. Y5 L[trade-record-all] of customer) > 3 )
/ K( }* z  z/ p# d9 u! v% H" q' r
[
5 G9 P6 m. _/ l8 H( v* K5 I  A' Rifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
" n. p4 i6 n4 s: g' O[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
3 c( E4 r* Z& `, [0 v, }[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]0 w. n/ U" }5 l' R0 u4 @+ H
]1 v+ W0 |9 N6 ~
]$ h8 |! S  U$ p$ S% B
set global-proportion note
5 \2 O* u/ L9 e" k  e1 W]; h& z  ]# `. `& l3 a
end+ p0 Y! t  J" M* v+ ?2 L, D

6 l5 s% ]4 N+ H) @" nto do-trade% s# c6 |: z( V, o
;;
这个过程实际上是给双方作出评价的过程+ l2 e6 B  w7 L6 T' H! n
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价, D- m/ U" v' t- ~- z& V! t
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
5 b) l% n- y  o+ E& pset trade-record-current lput(timer) trade-record-current) ^1 `% N3 ~' r* K$ |' ?. m9 ~
;;
评价时间
- O- i2 O. ~' J. |( J( J7 cask myself [( k' `  R0 w8 N* o+ \( o- N& w
update-local-reputation
/ F+ I5 N8 ^  ?7 P& T7 kset trade-record-current lput([local-reputation] of myself) trade-record-current
2 F8 N; B, K) k]
' M+ x( @+ x$ W4 s& zset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself- z7 d% W# d3 |8 J
;;
将此次交易的记录加入到trade-record-one
4 N1 o# i! L# e% `, Eset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
+ f7 t, @2 ~, U. W5 {, B  q! p6 clet note (item 2 trade-record-current )% K& L) y4 P0 R2 d* b
set trade-record-current
8 y3 s6 Q5 h6 R(replace-item 2 trade-record-current (item 3 trade-record-current))

) a* s2 c, m2 Y& j* yset trade-record-current0 j+ U5 k( x& K1 Z; \4 s* ?
(replace-item 3 trade-record-current note)9 O0 |" X* |' O% p0 u

" y6 r6 h' w& E: e6 K

& x  f& \( a; Q2 J9 ^6 R& _0 Wask customer [+ \8 W3 y4 ]1 S6 E- ?( l
update-local-reputation
) T& N5 P! n7 Y- [7 uset trade-record-current/ N! }9 B! g+ q' n
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
" ~$ h: j0 h8 J. D3 }$ ^" R; X
]
" r: J- h5 c5 k. g& f
% v1 L6 h: z( g( D% L& M! p
( }2 G: Y+ F# i. K8 E* |8 J
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
& ^) Y. k# G3 N* G; q

- y8 O* }* a+ ^set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
: {/ A) U; d+ L/ [;;
将此次交易的记录加入到customertrade-record-all
" i% L  m! u% R9 J& e. w; Y# L( Qend. X- q, O0 ~) v5 r' R1 A/ b. R# E* C' _

0 f' Y" J# D1 t( `6 C- Lto update-local-reputation
1 z, r3 t) P. v4 }: N% e7 e. Yset [trade-record-one-len] of myself length [trade-record-one] of myself. t: x+ b# u6 H, C9 [8 V* D

0 D; l6 j0 Q& m6 N' x. K6 X; y9 n: `& P$ a  o" M; Z
;;if [trade-record-one-len] of myself > 3
! E7 A( {% H" G8 V6 Z" x: `0 [  K4 u
update-neighbor-total7 A7 K4 E5 g# Q: l
;;
更新邻居节点的数目,在此进行4 L5 n$ k5 V: D  \4 x& K5 D
let i 3
- f. S5 w0 n8 G3 V3 x/ Flet sum-time 02 c3 r1 D9 x$ l) x- `8 Z6 n& m0 ~. _
while[i < [trade-record-one-len] of myself]
: P$ K! v2 Z! w$ J+ g2 H[7 @) Y! w  _' X* l3 o
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
2 s8 t! ?. i& P. }set i
; o) Z% i- `' w2 S( i + 1)

5 I5 i+ C9 r; A) }4 p6 t]
& v* d& M9 _- f3 V% Zlet j 3
, U9 U4 P2 T  z' P; m6 Xlet sum-money 0
' x4 o3 e0 X+ [- D- Zwhile[j < [trade-record-one-len] of myself]$ |6 R3 s8 G+ `
[* w6 V! @6 }# l2 Q' p" }# P
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)' ~$ L& _# o+ x; s
set j5 h, J( M  z% p" @
( j + 1)
0 }( T9 ?4 F+ b  r0 O9 D- ?
]6 Q. ]6 h) K3 t
let k 3
1 i# B/ ^0 Z9 u  tlet power 02 |: [! ^7 l0 F' E
let local 0
* \  n" ]7 ]2 Q% V* A) wwhile [k <[trade-record-one-len] of myself]+ X8 S, Y7 m8 h0 W# F
[
7 Q: c: J# @, v! z( w) P7 jset 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)
# o. X4 y+ D) \set k (k + 1)
9 p. [! r) K) q]
# ^7 B* E# L. l3 C1 U- }; Gset [local-reputation] of myself (local)
  R$ B. p0 L) s7 z1 _end
- m" j. Q. M# B# W
* y- e$ L" r6 ?8 y4 Vto update-neighbor-total
# _2 s2 ]  A! o+ }2 l$ Y# q1 F4 x1 B2 |: t4 j7 p6 g
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]- v/ M3 X/ p* X& H( e* g

, d( p5 H' `: o2 n

0 ~: l# |: L" Qend
+ k, @! v: b. w! F8 {! d! k- o* x" i# T
to update-credibility-ijl + x2 l% ?8 J- o8 A' s

3 n& D& _+ z; ]3 W$ f. R: P;;
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。5 W( G8 K. D5 u3 i. j  M3 M
let l 03 I8 [3 p& S2 j4 [8 q) h
while[ l < people ]
: d  D, `2 Y* L" ^0 Z;;
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 @: W- }+ v$ h0 X[+ s) k8 i+ G! ]+ j9 {
let trade-record-one-j-l-len length item l ([trade-record-all] of customer); E% {  q* B  n, i3 q
if (trade-record-one-j-l-len > 3)
/ y# L; l' ^  a6 k[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
# K* X( m1 D) h" Elet i 3
& C+ g# C7 }8 l3 G4 }let sum-time 0
3 M! V1 Y  b9 Swhile[i < trade-record-one-len]
5 t7 t! k8 p! C- @2 F2 |. l[% ?! B' Q% D# b' W0 S
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )$ k2 D9 y4 O) N6 @; B# m+ g( W
set i
; z9 K" ]% B$ [. \* H! C5 F( i + 1)
' |6 ?% D4 j- V+ i5 o- }
]" Q' v, \/ P+ r2 N7 e
let credibility-i-j-l 0
8 j# }3 ?# Y% w, @' c. K: p;;i
评价(jjl的评价)
! E4 P8 o" m, P: R8 i/ X# l  Zlet j 3
" P5 {8 u4 _- k% Dlet k 4
4 j- c/ c5 U6 ]# Hwhile[j < trade-record-one-len]9 q' Z8 W9 M7 }4 w6 s% C
[
7 z# l) K2 a0 n" z6 U+ ^4 Ewhile [((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
, G6 Y+ Y0 H* V9 `; Jset 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)
: H7 t8 a& J7 [. _9 Bset j- M3 u" x- m) w5 t% }2 z8 X
( j + 1)
1 h9 D' C3 S4 `# L8 e" b# [
]' t' A5 @+ w3 ~6 W4 I) N3 J
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 ?, {7 A: g& {$ Z( K! {* y  t

. U1 _7 a, p3 C- u* S

' U* M/ z% q7 U  g1 ?let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
% q# i: o) s$ x' y* Y' s;;
及时更新il的评价质量的评价* Z  C% W, x) D/ T8 S
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
! [  v6 Z& d' F' _! ?set l (l + 1)7 T6 n; i1 q" D) X- i% j6 S
]. {" W: }$ _6 ?+ M4 y, Z* O
end& q6 |+ b2 y) L% L% o! y" c

7 r0 }0 C" l5 S: v8 }. I0 C3 D" sto update-credibility-list  H' R/ r! x5 x
let i 0
8 C4 c# w3 w+ K9 a1 A" Swhile[i < people]% R1 n; I% Z2 f
[
* ^7 k2 N0 g7 \. P5 Elet j 0
# K4 ~- r8 P' _4 n5 M9 o- S7 b& ]7 dlet note 0# f9 N. ^% y# S) V2 B
let k 0, Q- d# O* P& H
;;
计作出过评价的邻居节点的数目; `4 D7 w5 A7 e0 Q
while[j < people]! o% {& g. Q$ J7 D
[( `0 M6 h; R; w7 W$ M
if (item j( [credibility] of turtle (i + 1)) != -1)% U4 }- ^# l  _: _# _1 ~
;;
判断是否给本turtle的评价质量做出过评价的节点6 g1 `' Q% ^* y; k! x( y$ `. Y
[set note (note + item j ([credibility]of turtle (i + 1)))% I  G4 Y0 V' l0 i6 Y9 t  z
;;*(exp (-(people - 2)))/(people - 2))]
/ p1 z( N. M8 o/ C% {& x; ~, I
set k (k + 1)
' I& E' x) ~% O]
, h/ ]4 j* w( M0 X; m  N( M5 Uset j (j + 1)# Z/ U9 M# B- ]. U1 k6 J  m
]
1 n! U/ p% H+ h/ B* D5 W# {set note (note *(exp (- (1 / k)))/ k)4 V( ^" ?+ P. @2 m+ T  k" A4 k3 H
set credibility-list (replace-item i credibility-list note)& }. ]6 ]4 `) z4 K" H- ]7 a& e! f
set i (i + 1)
0 }9 _; ^3 U8 P& a4 ^* R) B]0 E. H7 t  P. }# Y- E* R" E
end& H- a$ J' {1 t
+ d! a6 h1 K& E4 d8 m; R1 n$ [
to update-global-reputation-list
9 v0 B# Q9 f% n, S9 p: o: z% l! {let j 0* D/ D/ H3 e1 |" }# N5 Z
while[j < people]( B) t, `  [8 l1 e. O" n
[
% w9 Z& s0 \8 `9 Nlet new 0
9 B7 N  K, }* S0 p;;
暂存新的一个全局声誉
" w! _' B* r8 z4 _let i 0
# `' ]4 s! ^+ _3 X- m3 T" o% h, Wlet sum-money 0
2 S2 {7 h$ O, f+ Plet credibility-money 0& D' m! l" {" W. f3 K6 o3 D+ T
while [i < people]
" f. W( t' \( Q) _- ?# f& d) p) T[: p  w1 ~. @, {$ H- v. Z+ Y" u0 ?
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))9 B3 c  B9 S" ?1 h8 O& R! ]
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
7 @2 O2 `4 @& C+ L7 R8 Z. p! jset i (i + 1)
- T3 @6 n6 u4 i3 v: [- w) F( e]
! t, C7 \9 C  {  W, ?let k 0
( R4 |% R5 X4 m. d9 g  O, slet new1 05 u; i0 ^1 t4 W$ Q: X1 O# ^8 z, M
while [k < people]. H3 W$ [; a% W2 z
[5 K2 V: Q& P" p6 u) ^1 y, S, h
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)
! U' e/ A/ E" Z- [6 Cset k (k + 1)
6 b) ~; j6 o" e5 H" W]& h, I( H7 V5 v7 l1 z
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
+ l. n4 {( W5 Hset global-reputation-list (replace-item j global-reputation-list new)5 v+ n& V2 Q! h
set j (j + 1)
6 v7 d" ^0 o! Q5 c; e]) k; E# O% {  K% t+ d
end
& y% a, w" `% F$ D( E1 c: Y
' k6 \* S2 ~6 n& Y) k0 y! `, n$ m- r! K+ t

1 ^& u# J5 ?' s* G4 V* Ato get-color
& u6 v% K' }, O' z5 M2 Y7 H' ^. T2 @' ]: a0 _
set color blue

! a- }# b8 {% `) t; ?! zend
* A: W" N) Y1 {6 H  ]1 }' S9 j
5 h5 H" F: Y( m! Q) g$ k3 j8 d5 ito poll-class
9 p+ V  `/ _" l# ~end
- C; E+ f: `5 ?" M
; K, I7 A9 |9 ~7 M- b1 a/ [to setup-plot1
2 S- A! A4 L7 o( e2 @% U9 X
3 _. z& M% z3 H* i4 M+ E8 ]set-current-plot "Trends-of-Local-reputation"

) f( O+ l+ e* l- k3 x4 J$ F5 X8 k$ M- D: X
set-plot-x-range 0 xmax

0 t: R/ C6 c! }3 D& K- T, G# u1 Y" u4 x8 l& V
set-plot-y-range 0.0 ymax
2 Z% l7 [! \2 E/ F
end) q1 e0 P& O/ Z$ Y3 w  o1 f/ P
, l' l1 Q" h* L  O# r: O
to setup-plot2, f' R; c4 }; n' f# M, h' x0 W
) U, ^" b# _" b0 q) q
set-current-plot "Trends-of-global-reputation"

/ `2 p4 D3 `. a; @+ u! D8 R) T. m2 j- @
set-plot-x-range 0 xmax

. D4 [5 B) t% h6 c* T" `9 q: d/ T" t6 K# C4 G+ x0 `
set-plot-y-range 0.0 ymax

4 u, }3 L. W% Z' i: D- `4 hend
4 o' f) A: h2 a
2 y: P* I. q. z/ F& p. cto setup-plot3
. Q; D4 g) {  P' o
9 p+ c* Q( b* Aset-current-plot "Trends-of-credibility"

; |: @5 }5 G% M' t, q3 `$ V7 w
% v5 s6 m5 O$ k( Q. Tset-plot-x-range 0 xmax
+ @* s+ T, ^5 ]

+ C) B  a! M0 ]' z$ k' Oset-plot-y-range 0.0 ymax
" x! a) U2 U6 {& B  F+ b: h5 x3 h
end- J, ?( \& M5 \$ g& d$ @
( j  U/ Q! a, }7 h
to do-plots7 J& U" x$ I2 ^4 `" h$ ]8 R/ M, @
set-current-plot "Trends-of-Local-reputation"
( b3 V5 W6 |  B$ r* g" ^7 \set-current-plot-pen "Honest service"
4 E4 q- s# L/ T' T0 k5 n* zend
: _+ M6 f8 M! @- y; v& ^
* P- Y# Z5 v1 E( U/ D[ 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.
3 K/ r3 @% Q4 [/ H' _9 S. ^* m3 ^' F1 |' k; @
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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