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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:1 T' @6 x7 }4 h) J% O' R2 g0 m) b$ {
to do-business
9 N0 D( }, @  o/ V6 f% r/ ?: s$ r rt random 3609 f8 C: a0 T5 t8 m$ U) }
fd 16 [0 U3 k1 v5 T" Z3 V
ifelse(other turtles-here != nobody)[8 P% V9 B# I0 \* ^
   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.# T+ v# C& _# I9 s, O: C
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
5 n" [+ J5 Z- H4 c   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
% ?* D( S3 d* X   set [trade-record-one-len] of self length [trade-record-one] of self! k1 T5 M# o0 r' D- h0 J
   set trade-record-current( list (timer) (random money-upper-limit))' Z% l* w1 D4 u+ {; R3 M' W6 E  A

2 c# @9 w: m4 G6 H& J+ B; ?问题的提示如下:
+ X8 [# T8 ^  n( E8 i* a
) g4 K6 X2 e& `$ aerror while turtle 50 running OF in procedure DO-BUSINESS1 ?! ^( k- t7 o8 _& l5 p
  called by procedure GO
( M) E; z! b' z: zOF expected input to be a turtle agentset or turtle but got NOBODY instead." J$ q9 Y( J) Q* ]4 p
(halted running of go)
+ n. j! [0 N. s* v
$ C# ~+ B/ S6 U' z5 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~~
( I; N6 A- }# ~4 z* k8 b5 A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
4 `/ Q2 W4 T# ^4 ]% m1 d. Cglobals[
6 g( Q0 x2 ^0 Q& D9 C' kxmax) b- l" z' c1 w. P9 P% V
ymax
( O$ ]1 s0 K! dglobal-reputation-list
. {1 o  o4 l. ^  d% g
: L) c: H7 u3 _2 m3 I1 L  S1 Y;;
每一个turtle的全局声誉都存在此LIST- W6 g# C# Z5 j1 W- y/ I& ?6 M3 u/ i
credibility-list: }0 c# v' r  z3 r$ d' Y( r9 B- X
;;
每一个turtle的评价可信度
+ n' W- j# v0 Z9 q6 J/ C( ihonest-service: W$ }/ Z) Y; i! v: ^, Q
unhonest-service" a- ~, l/ f6 p. T- F: u5 \) m
oscillation6 N. g, G6 @0 B! E( G
rand-dynamic
: k& m6 [4 E9 j9 A: H; I( z/ p$ q; m]; w% i9 X; |! h% D0 W0 c) }# v) L
  b( u% D' S/ K
turtles-own[
2 f( h3 |" j* \% Utrade-record-all/ Y1 u; S: A; B3 [
;;a list of lists,
trade-record-one组成0 @2 L$ d6 F" c* ?9 T6 m: D
trade-record-one
  I; ^! J4 ~6 d;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录. C5 q$ O1 \8 r# f: X+ K
  D' q# G- g4 m! v) t' m
;;[
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]]: o6 P6 d0 B4 s6 v6 ~7 x4 c
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]
: M8 x6 K6 ]) F/ y: F: \, ycredibility-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list2 p8 H5 L  W. m3 Z; Q
neighbor-total
, L- p3 ~7 ?; `;;
记录该turtle的邻居节点的数目3 @  E; J7 z) z3 M/ B
trade-time
7 t# W3 w  {0 N;;
当前发生交易的turtle的交易时间% x1 K  e6 S) h
appraise-give
( C& Y( f7 ~4 `$ J) r2 h;;
当前发生交易时给出的评价$ U6 m2 s  q, j( U' g
appraise-receive; h$ b3 q8 L, s5 C" W6 O& ~9 s  q; z: \
;;
当前发生交易时收到的评价
; W7 @" p% b9 Yappraise-time
* N7 X4 g" a; G) A;;
当前发生交易时的评价时间
5 o; P6 r) `3 V5 Tlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
- t5 s4 ]/ H: ?( s( y' [trade-times-total
& {9 K3 h$ x" D9 F1 m! o' x;;
与当前turtle的交易总次数" G2 G: A# i* ?6 {
trade-money-total
$ X. f/ e" i6 ?: x* Q, ^; K;;
与当前turtle的交易总金额# V2 p2 C) R7 {
local-reputation
+ d0 P6 Q3 a  nglobal-reputation
6 {( M  E/ z- M6 q. M, x  \# \9 \credibility
' B2 z& B" p& c- y) I, S;;
评价可信度,每次交易后都需要更新" T: S* l: e! S( t& d% W
credibility-all
: H2 K6 H4 a7 l* {;;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
- s/ [0 V9 {. Z2 x
7 I, I0 W: ]6 z0 E3 w$ x;;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
. O6 R, A; Z7 g+ Ncredibility-one" _8 e8 G7 t2 v3 K, F, k$ E1 }% a9 ^5 p
;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people
; n% Q: \7 P  H! Lglobal-proportion0 b! y5 }1 R* {: b4 _
customer/ V. L! R; z5 |. c3 |: J1 i7 k& E
customer-no
% ?. S! Z( g" O" ~0 p3 z/ Xtrust-ok- g( x  r% {& _" Y! G3 a
trade-record-one-len;;trade-record-one的长度# T% S, b" U4 v" g+ R5 ?! M
]$ j" w4 j# Y) [6 u: J) z" w
0 b# a" l9 D' q/ N" q: M2 U7 r; f
;;setup procedure" v0 O2 C/ a) A8 M& e6 N

7 V) [9 v& j0 N* \* Vto setup
! ^' t# P: ~2 f  P6 i; |, S' F+ q% b4 L/ i6 G! d2 j
ca
6 A7 }/ m- D5 U5 Q

( }( g. C) G( o1 Zinitialize-settings

9 [0 F9 Y' V2 O/ q% V, S; B% q$ N! `
crt people [setup-turtles]
. ]4 k2 y' \" L2 W5 k8 {; C& n
) ?$ E5 _- u8 O: |
reset-timer

/ s0 c; ]6 u7 z$ D: U7 P4 G, Z9 r+ G1 c
poll-class
7 M( c& v* q# P4 N

' ?! O( |# I8 N2 C4 o* }0 @- Psetup-plots

4 ?( J: S; I8 @5 ]5 `5 x7 Y8 a5 F5 A, ~; l- `
do-plots

4 M/ b  L4 M3 C9 y& `5 i0 O8 dend
3 o+ e/ h7 z9 [- [0 y( t* J
$ [8 Z( U! V, x3 @; u! Q4 Yto initialize-settings- k) x( p! v  W

; {- a' w8 A8 Nset global-reputation-list []

; G: f/ s% L: C  j
4 _9 @) }* t+ L: fset credibility-list n-values people [0.5]
- @. v3 Z- ?& A, a+ P" f6 n/ [

- t, v/ B4 u* r: U# i$ y7 y9 _4 |  fset honest-service 0
" C2 I$ I7 ^+ I$ e( P0 `

7 i$ g0 w3 e8 {set unhonest-service 0
/ C2 S! d: U( @+ ^

! z5 i* Q! ~2 Nset oscillation 0

$ R! h6 [& t( [3 @. Z  A/ }5 F( }& W4 H  z5 N* T
set rand-dynamic 0

! p1 L, w) @0 `5 T' O$ Qend
9 f5 R% H, I. ^% ?* R2 U& I+ }  `! ?6 O0 ?+ J
to setup-turtles
5 h/ |' N  @; u/ ~8 g$ |8 c' A8 Dset shape "person"
$ r* `) L8 C) l7 j, D* j- Asetxy random-xcor random-ycor/ }* `: D& g* Z0 w
set trade-record-one []
; P% u0 e; U' D: G4 X0 j: L6 ^& N) n
  u0 a/ w% Y2 d
set trade-record-all n-values people [(list (? + 1) 0 0)] ; w  e' q! x; d( _. `
8 S* {& t3 J4 q* P0 E6 M. [
set trade-record-current []% N5 l& R1 A  m: Q
set credibility-receive []2 _* _2 P3 M. f' L6 {
set local-reputation 0.5; q8 ^& H3 \' q( W# C
set neighbor-total 0
' |  x+ _3 g% N' W" \set trade-times-total 0  }: L8 e" u/ u/ |* v
set trade-money-total 0
* Y2 r" x3 E; W8 S( @1 @" K2 iset customer nobody1 X' C0 s$ f* B! m1 j' {# H
set credibility-all n-values people [creat-credibility]0 \3 W4 U- w) x5 q/ p" [( k
set credibility n-values people [-1]% `+ f6 {) l2 A* `
get-color
$ f4 ]  \* M0 c9 T$ U3 I/ X+ P- V
3 O7 Z* U8 f6 q. e
end/ f- E1 y: _2 B- B+ Y1 X
& z/ c+ i4 o5 j/ k1 C2 i3 p- i
to-report creat-credibility+ G- `" [- \' ?6 e
report n-values people [0.5]
" n' |) L/ X# v+ ]/ r0 Send
( N, ~0 l0 o8 r' D
- n* C0 U2 ?# {+ x3 Pto setup-plots( _- F, e( b* j0 D" K/ \" w
# A4 I! ?1 U) ]3 X: w
set xmax 30

  B7 A- Q9 O- j* L# p2 P9 `# G
2 a6 t+ `8 p8 l0 B' Q- G( F( \set ymax 1.0

; l! b# s2 q7 A7 H7 w
* p# G6 c4 o& dclear-all-plots
; D# u  M# w+ {2 V
1 e" C- s5 A7 e- K6 f
setup-plot1

& ]0 u* j/ v6 z: l6 D# V4 ?+ L8 Z! m8 `0 o  H
setup-plot2
* L$ O" l) D& M$ F
4 x/ D! X! e) l4 _/ T- m9 \
setup-plot3

7 ]+ G4 \# F$ D# s5 J( |end
; C* G! B! u% j. j9 h
. f  b6 G4 l7 G8 W0 p' c;;run time procedures. d3 J  H/ k+ s' n# u9 Q

# i9 }* A! L) z1 Hto go
5 v* }( i0 i: n. R2 y( {4 q0 J, G0 M; A; h7 L( e( F
ask turtles [do-business]

  V6 c" A6 [5 J( zend8 c& `5 b/ M& j
' T8 |, }7 z  ?2 W$ k
to do-business
. V% e" T, t9 ~3 A. Y; `2 B+ c
7 R% @8 ]6 E$ [" A" D( x( m1 E  b

: |% x8 y- \7 ]1 }' |. Art random 360

" g, Y/ Q6 G6 P. }
* U) X8 a: B) d/ X, tfd 1

! k* A; S. W6 e) j  U3 s8 d9 a* l6 H7 o0 p/ J9 u
ifelse(other turtles-here != nobody)[
2 @" [* S" s0 ]# c+ |

! D& h) i( S, C" Z) D' fset customer one-of other turtles-here

( \" n8 L5 P, G: U' l9 x  J5 P8 }. Y* [& w3 J& k" s
;; set [customer] of customer myself

4 c' L/ S3 l+ Z6 Z! I; V7 @; o' w$ W7 k0 G0 G# g1 G" ~
set [trade-record-one] of self item (([who] of customer) - 1)7 {& Z2 X/ L& j- R3 h3 E
[trade-record-all]of self* R. b+ l" x' c9 {+ I2 G# f, S
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

% h& D) h# ]% q( b& z. S% a. P: m2 e( H2 F5 s6 }
set [trade-record-one] of customer item (([who] of self) - 1)9 x) B: a0 w4 n
[trade-record-all]of customer
5 ~4 n! y& ]. {( P: ~3 E; I

# ~$ R) j; Z; b) O, p3 l0 Q) Sset [trade-record-one-len] of self length [trade-record-one] of self
# M4 I, R, y& C/ @  W1 _; j7 Z! U

# A. D- t4 y; _, }7 U6 eset trade-record-current( list (timer) (random money-upper-limit))

1 F( u4 |4 }9 X' }, z! R/ `$ m3 B' u. y
ask self [do-trust]# d- |* d5 }9 |5 {
;;
先求ij的信任度
9 ]' y' o4 h. ?* J: t  }# Z7 ]4 a" h9 C4 O& _- k0 z$ [: u
if ([trust-ok] of self)
; F8 N  x4 q& z% m9 d;;
根据ij的信任度来决定是否与j进行交易[
1 \( \3 ^; ]' Hask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
  [: M9 Y8 n7 V' z( t: Q* Z9 ?) R* T, {* U( f! R: I  i
[
( o, Z; n2 p& D

/ ~; s+ H0 U% X5 o+ u; p7 Xdo-trade
' K0 Q% R" x8 K
! ?( f% E6 M) n; n* S
update-credibility-ijl

$ _% s; U* b8 c0 b2 i( g4 u& D
update-credibility-list
' d- ~9 i" S. p6 o  ]- r' z+ E9 H/ ]
( K! @2 r( |5 Z( e7 l

/ p2 H" V6 p6 Rupdate-global-reputation-list
  \, E3 z6 U$ Y' `* x
- r8 y: i, I# K3 v) t
poll-class

, E  Y& N( `9 Y8 B) u5 ^" _7 E2 Y! ^1 R9 W4 e! m. [6 V
get-color

( u- }5 q5 U$ `7 G( V) G. @2 g9 @6 G" b3 B( ]! t1 Y2 y7 I
]]
: i  ~$ a; i" ^% R# ]( i5 c" p  R9 q6 z) g# R1 U. ]( U9 l
;;
如果所得的信任度满足条件,则进行交易
; n; J. [: c" P: e4 e7 O" W
, d1 s/ ]0 d, @: L3 d; e[

* z; t8 f7 {6 \+ N0 i) B
( G+ b9 p. Z; c1 @- S8 O$ ^$ A$ Urt random 360

* O7 i; b/ J' V% l1 i/ |! E% k" s/ W: L2 p" S, q
fd 1
1 }* T6 X, C. Q) [1 M
( _8 ]- p# r) O. n% {" A% ^
]

$ N' ~7 Z0 N( t( q) Q$ W6 _" f
( m/ l8 b, t3 q- `end

* F8 M! v% \6 Y
3 n0 s: ]2 u* {: Z4 G& Fto do-trust
  n- I0 U9 K+ X, ~/ _* Dset trust-ok False4 S+ {# n$ M: W+ T. l; [0 y4 Q9 a

- N+ S6 l" f, |5 |: E2 E( @% ]

" F: K( J( Y. Olet max-trade-times 06 V) v6 `' {, W5 X
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
. R7 H2 ~0 o, f' Q, klet max-trade-money 0
, N+ f  C: g' W, ~foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
0 Q: x9 o* ]! Alet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))3 x5 I' d6 X9 S$ ]5 ]8 ?
$ n8 P* c, I, d+ u8 W7 u1 e$ e7 Q
  s, q; F8 [, `) \
get-global-proportion/ F, b3 Z1 b" g+ A
let trust-value" T& C4 x0 a- F5 E2 n
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)
5 f' _5 X) K6 i. `
if(trust-value > trade-trust-value)$ H: x8 m7 B* e! M
[set trust-ok true]7 Y# a+ X0 r+ G/ _$ x
end
& K) U; q/ I+ m0 ^6 H* T' ~
- t# s( Q) V6 E" F* F5 F  Sto get-global-proportion
; A1 M2 L: P, e" @% h5 f& }ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
+ F% s  H, T( Y( @[set global-proportion 0]3 W9 ^+ ~2 L7 X: D. [/ f" P; m
[let i 0$ X( s! J: ?, M# g& i
let sum-money 0
2 X7 p( u' d, s* M* j2 M: ~while[ i < people]
1 A. k( p/ u; _- C[1 b3 U! m' l' t* n" I" v
if( length (item i
5 r3 S$ K( v/ e$ U[trade-record-all] of customer) > 3 )
" S1 ^/ Z  }  X- W0 [
[
* F+ @% g# l5 P0 T  Q+ Q' iset sum-money (sum-money + item 2(item i [trade-record-all] of myself))$ M& a, Z+ j7 u$ m  B) f
]
6 C1 b) _, B9 Q; ^. W9 z]* D9 {! ^) j7 j" s
let j 0
# i9 [, Q; I: Q5 t7 e7 r' ~let note 0% n; Z9 q( n7 f+ O3 P& g) Y
while[ j < people]
0 o; K5 j( n3 j" Q. ][
1 a" p2 D& r# W1 kif( length (item i
) \( F* t1 `0 c# s5 Z3 S1 b- s[trade-record-all] of customer) > 3 )

( p5 f9 R# p- S* c[
) O' a" m$ h# e4 Y6 k7 \' _% |ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)- o5 t+ A& h1 U) x
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
/ D0 ?) A5 P9 X4 ~% Y: i4 H0 y  L: G; `[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]" G& {  V; A4 R- K' ~5 M
]& C8 w- q9 {  ?6 B
]9 A0 b2 O  l: J  \) D) }
set global-proportion note  c. Z% w1 u) D% F0 n1 u" s. b; @
]
0 V  n" E$ P- @, q7 n8 f2 P6 r5 m, eend$ Y0 `7 d. b9 ~2 A. Y$ K

: |% O) E0 u$ q) p8 r, G: Wto do-trade8 o) N+ M8 b) j
;;
这个过程实际上是给双方作出评价的过程, O7 v" }5 ?" G8 @. ]  ~
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
& I% ~6 i7 X1 o! sset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
# j% V# s* L( }* \) }set trade-record-current lput(timer) trade-record-current! d0 ?5 h4 R/ s- S8 g
;;
评价时间4 J3 T. c4 F. ~: U) [, f: w
ask myself [! M9 q" x+ Y7 `0 H1 w8 _
update-local-reputation  ]$ R  w% l7 w6 w- {
set trade-record-current lput([local-reputation] of myself) trade-record-current
( u6 }8 o! b( ~( O3 z7 ]]+ ^. H+ i" l, T6 p& z7 W- ~) H
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
) ^) C; G5 C! ]  @+ X; _; g9 {7 i;;
将此次交易的记录加入到trade-record-one' p5 D! {! V3 d0 q5 M/ ]8 f& p
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
1 W  j$ T- d5 C- d# _6 rlet note (item 2 trade-record-current )+ a, r2 W7 _: v/ |
set trade-record-current" `1 a# o" V: ~& K
(replace-item 2 trade-record-current (item 3 trade-record-current))

) m* [, \9 Q# `7 dset trade-record-current
# Z: A% ]5 E% S* Y9 w+ W! P(replace-item 3 trade-record-current note)
4 B- ]" c3 U4 R& H' ~
5 }* {' g& j0 I* n' X, |

) t4 b/ X& R/ s* O9 Q, X7 Dask customer [
7 [3 M' p& m" q3 s# E) t& Tupdate-local-reputation( t- z. g2 o8 `( i1 ?
set trade-record-current
9 e  F0 [) {6 K0 E; O( V; p(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
0 C8 s& z3 r8 G& q+ W! h) P
]1 w7 I( Y8 n" {9 M% |9 p  n
# p$ C4 l4 k6 J  d  v  E. F

2 ?+ U8 w( W! j1 O3 \2 Vset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer- S; o# C1 E1 {8 d/ \
, G" N! M. R- k: {7 s
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
# I5 D2 r5 N5 O$ |/ ~& };;
将此次交易的记录加入到customertrade-record-all
, q' G, c  i2 h6 R- h0 oend7 n) i1 E- o, {" @% Z% m4 J

( c( _- v+ d) K- Rto update-local-reputation
2 h+ r# U% b9 f- ]9 \: ?set [trade-record-one-len] of myself length [trade-record-one] of myself
1 L, ~. [( q+ c6 k5 a* d) ]2 K9 M3 e% V! a! F! p1 D0 R% Q

$ y& w! N# m9 F* s0 q" V;;if [trade-record-one-len] of myself > 3
* N. |+ ^0 ]8 O1 U6 s2 F
update-neighbor-total
* @8 b8 ~7 }. O1 \  u9 {;;
更新邻居节点的数目,在此进行
9 s! m' @1 s2 S" Glet i 3
* P3 @" \4 X# B) llet sum-time 09 X. e3 j* R4 t, R4 K% W
while[i < [trade-record-one-len] of myself]
/ [8 T6 f5 }( S2 A! @: H! ?! L6 x[
& }: U$ s6 M/ ~# b: E) aset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )' Y. p- s2 u. _  l: O- v) S& O6 I
set i
3 U. {0 L8 W+ V$ v& N6 ~0 ]( i + 1)

- ^- C9 `2 ?2 @+ _( K5 e]
2 e. ~# q; w: h( Y  ]6 zlet j 3+ X3 \+ ?! }% u) l, X9 i+ G
let sum-money 0
& F0 {% Y: ~) f4 K/ E1 Awhile[j < [trade-record-one-len] of myself]
6 |3 S3 X; M% U: E& E6 O! Y[
4 ~* M5 A/ `) t) J0 O; X9 X' Zset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time): q) n! R4 u! d9 W) V
set j8 |( W( B! P$ _- I( C% f3 ~
( j + 1)
6 p% U/ d* o( u
]
( D& s+ A( ~  D  o4 U8 Hlet k 3
; F; X) T0 [  F0 Ulet power 0
3 r0 N, S) Q6 i& Ulet local 0
5 k: p+ @  N: W+ |while [k <[trade-record-one-len] of myself]
# J9 s# F1 q0 w7 g$ R0 y3 ~[: r' H# [3 B% d# e
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)
$ O: U, B/ C) Mset k (k + 1)" |+ F4 v% O& n. r5 r/ p5 b; }
]
3 [% I4 o/ _; y; d2 t+ p8 rset [local-reputation] of myself (local)( j5 f- b  ]+ a" B. ]
end/ j# I, F) f9 K" F
/ B3 l: G$ B3 ], o
to update-neighbor-total( `, g) z0 I: H5 E

  x* B' }# Y' t  qif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]" f# \1 K3 n3 q' ~1 G0 `8 M+ s! ?
: O! p" X, `% ]  k9 v3 s7 v

& p; p9 [1 x, t  u6 G2 O2 d7 fend
$ Y. Z& D% `; q9 W2 E6 ?3 }, }: R
( d! A1 W+ E9 L6 ~9 kto update-credibility-ijl
. w5 M; m0 r  ^" }! W# U" |  I5 q2 C# }5 Y
;;
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。
$ W; i- \0 z3 ilet l 0
! F9 X" U9 o/ K- h: e5 j( S( ~while[ l < people ]% L5 W) C' \7 w( W" c, f0 J+ E
;;
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1 B. H; b2 X: _5 p+ k, Z2 S
[
+ n7 a4 S" V+ k# V5 @let trade-record-one-j-l-len length item l ([trade-record-all] of customer)0 S" F0 G& k5 V* B3 C/ t+ @
if (trade-record-one-j-l-len > 3)' b& V' |6 ^, K9 C$ s2 U5 F; 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# J  x9 S' I$ u" ~/ l3 v; W/ F
let i 3* L4 z5 Q- W0 x) x: y" T
let sum-time 04 q9 P) L6 ?8 ~1 K0 ^) f6 C
while[i < trade-record-one-len]6 r( ]5 J' Q! i$ s, i2 d
[# h* T# z/ f. V6 C: ~3 W2 j
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )- Z+ [& h& g3 D
set i8 Z! y. u( s! T$ c$ Z& J9 I
( i + 1)

8 E" J6 a( u3 x4 E  ^' r! B# v+ m]
7 o( n1 K$ a4 L6 u# K# U/ ulet credibility-i-j-l 0
6 P& w3 S3 k( }) g, c4 }3 \;;i
评价(jjl的评价)! i5 n; h; ^7 k, `% @0 m
let j 3
# c# R8 A% D6 D1 u. l4 [- T7 G4 llet k 4
; o% Y6 G1 s- x& B& ?" ewhile[j < trade-record-one-len]
/ G4 g- ~) R$ R; `. i[$ I4 U2 N; \* t( ~- l) G7 g( H
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
' }% s/ a" w$ i# `) g8 W7 ]" @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)+ C. ]: m# b) p
set j  V! r& i" T" a- Y8 Y; Q  B$ v. I/ B
( j + 1)
' d, e" B; `' Z4 Q; t
]0 I9 ^2 B5 g2 _4 [
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 ))6 ?9 m; O: U2 l- n8 T) W

1 A8 \8 Z$ E# _& F7 r* m
, u" L3 w! y# O1 b" E- c' A! ~
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))% r! e! i" j1 n% U
;;
及时更新il的评价质量的评价/ J/ S7 b" n. V8 ~; ^
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
8 n5 ~9 i: W* n$ f" lset l (l + 1)
0 \& o% w; z" B. L# L- K8 I]. T. w% }3 Q& Z6 Y8 u# ?! ^
end
8 `" ~+ w. _& q/ r. [* L
1 N0 m2 a! H& d6 rto update-credibility-list3 m/ F/ ?8 C& e. |8 L) `( _# G
let i 00 A* \- b$ ]" k& P1 x
while[i < people]
$ ?! i* Y# E) }9 r7 Y- u[
* p0 ]# T! f3 z  ~5 Llet j 0
. c7 A1 v! V! {8 I1 rlet note 0
$ l- M' `3 Q! l) Q$ m/ flet k 0& p1 N5 Y0 V- K, \
;;
计作出过评价的邻居节点的数目. O5 {' o1 A8 M3 K9 B  j8 B
while[j < people]
) S: J5 I& J# U# D[/ A' U/ S6 k3 `4 T$ j( x( C% \
if (item j( [credibility] of turtle (i + 1)) != -1)
5 J' v/ |& W# V3 U" |7 ~- ~;;
判断是否给本turtle的评价质量做出过评价的节点- W+ x. H% ?' O( [& y; J
[set note (note + item j ([credibility]of turtle (i + 1)))
! W  s6 D3 w/ y2 B6 Z% {;;*(exp (-(people - 2)))/(people - 2))]
/ L- @- ]0 c$ k7 y7 A7 j. f# _
set k (k + 1)' n0 ?8 d$ S/ Z8 W" I
]
6 d/ ]( L  ^: {% Lset j (j + 1)
2 Z8 j7 Z1 S* i/ H]
" d) a; i# L) ]' |* cset note (note *(exp (- (1 / k)))/ k)
' K4 P4 d1 n) ]' Gset credibility-list (replace-item i credibility-list note)
; V6 {0 x7 }& a# f; ?9 Tset i (i + 1)
9 y: m! O" C; j' a% j  `/ D]0 I7 _% J- r; [7 o2 G, q
end
& a7 |' ?1 Z. |3 z2 h
4 i  ~/ M2 P# B+ h! @to update-global-reputation-list
- H$ P1 f8 D' r# Ylet j 0
9 h1 G) p- P  D( _! rwhile[j < people]
5 L0 ?$ y/ Q- a- s# ^$ `$ Q1 G[% S% M$ V" g* `0 \
let new 0
: S* x' G" |7 S/ ^4 A;;
暂存新的一个全局声誉! B$ ~( q6 a( Y( t9 I
let i 0. p/ @/ O  D& d' P% z. ]
let sum-money 0
" P* y. l0 w0 D6 {& `' ]/ u. S9 ?let credibility-money 0% K! J2 [$ v/ f: Y9 ~; d+ n
while [i < people]. ]* H# e- r" \+ m
[
2 L- L$ N6 I" Z( n4 z: rset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
- M' ^. k0 |: @8 }' T. @, }% x& nset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
: a4 Y5 i5 i% ^' E2 K2 ]set i (i + 1): w7 h; A/ z% A, x) D
]# K. J5 e$ u, S
let k 0  P# m+ v$ F4 _- Z/ t
let new1 07 z( h) I5 ^/ U& s  Y/ L! |
while [k < people]- X5 i1 j+ g4 C  O  Q: {/ W
[
; [8 N" k8 i$ ]9 E) ?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)
# H' k5 o8 r! O4 @; A+ fset k (k + 1)
6 Q6 w8 p) n, R' ~% x]
/ U; {8 b. X* O$ iset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ' c1 q1 X2 ~" J7 E5 c. E5 d6 q
set global-reputation-list (replace-item j global-reputation-list new)
' x& L" a4 q$ }6 P% h' W5 ^, ]set j (j + 1)
! ^& _; C3 |5 N3 [) U- o4 J]
7 k0 }0 s$ g' C7 {! ?* J$ L8 Vend) f- f4 U. H& t

* [. l2 `( v  j% F) D) Z1 O
4 e0 c$ L- X! `5 g. I; G
" V3 q' e# N! l# ~to get-color/ F; B' a" w; F5 L7 u

' m0 w  G( ^/ lset color blue

. P+ ?" i' r* o+ S, A$ q' Lend& ], h6 _1 E0 _7 k! C0 x) w  x

; j4 o1 k; u7 O3 }7 }; Mto poll-class9 t$ s1 Y4 v# Y5 p
end
/ w0 b: v) R- e/ S$ V# X6 J2 ?* |  I' u* S
to setup-plot1
( D+ E" Q- b* N4 O! V* z1 o2 f* m) B" i- s
set-current-plot "Trends-of-Local-reputation"

4 y4 F) B1 A2 k* i2 C6 B1 I2 H! a$ R3 S$ V
set-plot-x-range 0 xmax

8 a/ p' W6 U; U2 q" z& G$ d* q6 c3 |) |( z7 y: l
set-plot-y-range 0.0 ymax
9 j" N* W! H. k
end- Q2 A% J5 p8 k7 b, z* F

) h% p; _" t' k4 u* B6 Nto setup-plot2" g4 J6 B" V/ H

4 X* F3 F% N+ Y4 Rset-current-plot "Trends-of-global-reputation"

; b% C  g. w- Y4 e8 K9 i. c: k4 Z
' {, R0 Q2 h8 M' }set-plot-x-range 0 xmax

" |" Z0 W. Y+ l! k$ G
7 y) j! h8 Q* o+ f$ ?3 gset-plot-y-range 0.0 ymax

) r& H9 D$ W4 |end
$ G8 \' c- H, k; Q- r- M* ~, h0 q" N) Q7 j% U
to setup-plot3& f8 U. l& N( s1 s) s
+ n, M; j2 G7 m/ H' i! K0 B
set-current-plot "Trends-of-credibility"
/ a3 ]- T% f8 R

8 R) F" b) \/ n, d/ Eset-plot-x-range 0 xmax

/ F, M7 }, ]& X' V' e( `2 [; i& t$ j# G5 e) ^, z" w! j4 s
set-plot-y-range 0.0 ymax
+ t$ O, z7 C6 s
end
/ h1 Y& ]  ]' R# x& E
7 y8 Y9 c5 ^  Xto do-plots6 M# |# S( N3 }6 `6 i4 V0 h- M( Y
set-current-plot "Trends-of-Local-reputation"
3 P% x+ P4 _5 }. Q  iset-current-plot-pen "Honest service"' E2 m  q1 J' f* k- l& B" x( ^, c7 k
end
4 a& h5 f# I" Q; |; W: C9 i2 P  x. i$ v) T! J9 d& 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.
$ X$ p3 Y, O3 c( x) i3 n  q: P
' I" p- p/ e) I5 r  g6 i$ u' L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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