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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:8 W* j% @! M0 Q3 u
to do-business
. L) G3 ], ~* c6 E1 [5 E# b8 R rt random 360
& R- I: d7 K, Q* M fd 1
' A5 k2 p2 N" a ifelse(other turtles-here != nobody)[0 H4 Z- I- |( O0 u/ S; 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.9 ?5 |% z6 t# h" m
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
" p' s" Z3 c/ I3 A; U) |! w( ~   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
) }6 D7 t( w, v& b6 H; ?   set [trade-record-one-len] of self length [trade-record-one] of self8 Q9 N3 w: e, |4 V. `
   set trade-record-current( list (timer) (random money-upper-limit))# y! P8 Y; ^$ s0 G8 s  ~6 u
  F! `  [2 v* ^& P% W
问题的提示如下:
; n: `+ R6 l2 J
  @3 ~: h$ R+ x+ q0 C/ Nerror while turtle 50 running OF in procedure DO-BUSINESS' {  E. i* ~3 O; p& ^
  called by procedure GO$ f5 A% P: Y3 i6 t
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
* [  y, g, O' s
(halted running of go)9 ?* S: o8 ]+ x) F& k& u7 K- n
5 o5 k- I: L% b, L. h/ j
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~~
5 F" X8 o  E' z4 L; K" M另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教
* L" }! \; k) r- b" \; Qglobals[
7 F+ ]2 W, q) t7 {0 h- s7 K: Fxmax$ Q* I- e" V5 V) J! q
ymax8 R; @' D1 q, m2 J& [3 h. F
global-reputation-list: ~; \1 l: ^/ y5 j9 x- f# F" q

4 K5 [; z3 ^1 s! ~;;
每一个turtle的全局声誉都存在此LIST
9 W9 C, N, H, K0 ]2 p. zcredibility-list+ m. t) ^0 C" T/ M- H
;;
每一个turtle的评价可信度  L* k6 q0 r# Q; }2 q
honest-service
3 Y  `$ L0 t- i( d5 iunhonest-service% i: M: T* B; s5 N" h7 P
oscillation; E- v7 \9 b: }0 H5 f
rand-dynamic
9 Z# R. H4 Q  O: q/ n. Y]
# A& D  ~$ V( ]' o# H1 y' Z# s
8 P( x5 {! d, z# Lturtles-own[
2 W( V6 G7 H* ~  d3 R) g+ Y0 a+ W2 ~trade-record-all
- l# T. ]# R6 ^+ I5 L;;a list of lists,
trade-record-one组成
" K$ T0 T( U9 n" U4 b/ ?" R- Etrade-record-one* g# I$ S4 b. {- A6 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
. a+ }# Q. x$ n+ {1 }6 q) N/ h7 D) R2 E4 ?; V& h  `# T6 P
;;[
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]]0 G9 g; P; B% ^" \. L& y
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]+ q" D7 c1 I* v3 {, u$ w3 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+ j4 q) l9 L% ]( X% t( Z5 L
neighbor-total1 P3 o1 N6 x1 t! a3 m( X( k
;;
记录该turtle的邻居节点的数目
* n- w+ Y& t/ A1 V0 Otrade-time# V5 o  k! E& M; A% C" X( e
;;
当前发生交易的turtle的交易时间9 k( a8 Q7 b% |
appraise-give  d3 l# x% {3 V
;;
当前发生交易时给出的评价& F$ F' S6 |: y1 n! q
appraise-receive: f. r: C0 h) P& l! L& Q/ @% v1 J
;;
当前发生交易时收到的评价
+ y- J8 B* ~  i$ o, }( Jappraise-time
$ g2 G8 v6 ~+ A7 F;;
当前发生交易时的评价时间
4 c  H- L' d/ k& z$ b& e) d- H2 Jlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
8 B' q& I2 K* H; t' Ptrade-times-total
+ Z! q% d* U& W- G! k;;
与当前turtle的交易总次数
$ G$ P8 C% W! n% K: ktrade-money-total
. Q2 R' U" n% U; T  z;;
与当前turtle的交易总金额) s( L% G* B) @! C1 c4 R$ _
local-reputation" F3 A) U: v5 D8 N
global-reputation" o+ h  a: U! d% N" T+ E) u4 u
credibility% V# @8 I  N, s9 c, f. Y+ `
;;
评价可信度,每次交易后都需要更新
& ]! X. U$ n, v" [6 ^credibility-all& W' E6 s, ]. S
;;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- o6 y7 P" {+ y/ u

6 U2 a& Q$ E' B  @: m$ L) R( R" b;;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  D( q3 X7 t9 I# j7 K' I- _0 X
credibility-one
: p, ^" q; Z8 y: P) m' Z! h;;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people3 H! o) e% Q! N1 T, H) ~
global-proportion% r* _6 t: T1 m0 H" T4 D7 O2 G) s
customer. |% X0 w7 A2 y/ P
customer-no' W1 E8 P" J9 c
trust-ok
, G. k+ V4 x* F2 w; gtrade-record-one-len;;trade-record-one的长度* @- ]9 J  ~! [; k6 F6 v4 U
]2 f+ i8 o1 f) o
9 V' m& c* b5 d7 T
;;setup procedure7 r/ u) u# Q; I; J8 `
& T& Q# `- e2 W
to setup
! M: e( a# K! Z0 N3 W8 D7 L  Z: u* ?+ \1 C2 d) o
ca
& V6 q1 a5 [; i
2 ?2 X- V* e7 O+ r
initialize-settings

2 y5 y: H5 I  y6 X/ M+ ^5 v+ \$ T( {
crt people [setup-turtles]
; T3 A8 Q* ^7 }1 o

9 c) U8 n% O! v$ Breset-timer
/ i8 c0 b0 D& A6 G

8 L$ }1 j3 l% m4 k) [poll-class
3 Y5 f  B2 v2 w( N3 y6 g7 E3 }
2 @3 }9 Y3 ]0 g) P1 g8 c1 [* b/ Z
setup-plots
+ R  l1 i+ c( D( @

' |3 H' g& H8 A- [do-plots

4 T( \: O$ Z  n# r& A0 ~end' \% B3 c0 i) ~2 O) G. I4 D& E! M9 C
% Z2 D1 \$ d0 G3 a6 T
to initialize-settings
; N- }0 }9 Y5 K$ C) s; p) z" v; x0 ^  @* s7 Q' J6 m
set global-reputation-list []

5 ~* G0 y8 ]- ]3 @3 x4 Y
1 W2 |5 z; d; n% [/ _set credibility-list n-values people [0.5]
8 J0 S# M' s3 S! I& ]& n$ }' o
: y# O( @4 {6 K0 s2 I, l7 W+ ~
set honest-service 0
/ P: O: Z, @. _  `0 W/ ~
4 H4 y: k& k2 S7 H4 W' M; t1 {
set unhonest-service 0

( a& h" n3 \0 Z$ n' B5 k3 V- S- Z2 c- w" s* i
set oscillation 0
2 \; c3 z6 E  Z. y" H
: w2 X# f- \3 D. o8 b' A
set rand-dynamic 0
  R2 [0 I% n) H3 a0 ]$ p+ p
end
9 Y; K8 E7 a2 @7 b( m- I
6 o$ {% h: R0 T4 V" V" lto setup-turtles
$ x7 ]" s! u. aset shape "person", y- J0 M: y3 O8 u( p" ]  @
setxy random-xcor random-ycor
) `' p/ g% v& L7 Bset trade-record-one []! r! H4 ~2 o$ w3 }" u2 n: \

. a# n$ T2 `! C* l. o( r2 Iset trade-record-all n-values people [(list (? + 1) 0 0)] - H4 x% ^* M0 j, A

! Q- F) y& C1 X/ P8 j$ @  Wset trade-record-current []- G2 r& n9 X$ I& y0 d$ X. c
set credibility-receive []6 j: o4 A' j4 B$ u3 \
set local-reputation 0.52 q$ Q; c, g/ a' |$ y# s8 J8 U/ X
set neighbor-total 09 o9 ]9 _5 L, c
set trade-times-total 0
# ?8 `) ?, A+ E! t/ q  Iset trade-money-total 0
% F) W0 s2 y: R( z9 t* D2 k+ j2 Cset customer nobody
+ Q/ y2 m0 e/ @3 ]2 O  e  F2 Oset credibility-all n-values people [creat-credibility]
$ |0 u3 _  k# Eset credibility n-values people [-1]
( R& P+ h3 I* k. _. _( W; t' cget-color
9 P% a" \9 d. q) e; P' q
% F, ]! T5 e; O* \' G
end# e0 J* a; d. C# F
* l3 r3 ]6 \4 c% W$ n" D4 A9 B
to-report creat-credibility
5 r2 U) V6 Z* v1 x. z* }1 hreport n-values people [0.5]
. w! P2 {% V7 [$ r5 y; Hend/ w1 ^; j- O3 A3 K! r% }9 Y

) @0 V/ B( a, d) q% f8 T0 Rto setup-plots
5 ]6 j! @6 a) n, q& V9 w; U$ K+ p2 }
. h% r" \: ^" Aset xmax 30
% u/ E4 {! z. I

' Y4 U: c0 M1 I3 j1 n4 L  q5 Lset ymax 1.0

7 E. d6 i# @5 {+ n5 L6 y/ t1 U! w5 R6 q* P4 u5 u4 e5 R
clear-all-plots

6 Q+ Q$ E. [( f  p8 R( J
9 B  N+ ~7 [9 r; O/ Esetup-plot1

2 f# @) F9 v. q7 A
( U5 g+ [) h9 d0 W' d! X: K0 q0 _setup-plot2
7 b, b* B6 t, ]7 e4 R
" E- z. F# B, A
setup-plot3

: E4 O7 x/ d5 Fend
, Z) \% G0 D. n, ~" M. E, i. v
  G6 C$ o6 x" ~* ^;;run time procedures2 a( E. X1 d9 h3 j4 F* z

$ q) F# i8 v, x; e8 pto go
+ C6 o/ Q8 \: b; n- t) \0 k
+ t+ x& B. {9 X" C; nask turtles [do-business]
1 K; c1 F" V/ T9 _9 R2 C& z1 V" Z8 \
end8 B7 b6 s2 \4 i

' ^5 C4 h2 N2 }2 R$ S- V1 p) Rto do-business
7 Q" O6 W) |# G+ m! Z9 W
  c4 A1 ^8 d  @: G, g7 K3 j' u

& q% G5 |/ I& _+ O6 ]rt random 360

, A; h  T! c$ f9 D
: o  f! w9 j4 Y1 ~6 Mfd 1

/ Q2 u; N' x: ^0 N; P, {! D% g: @; K/ K: x( {, _
ifelse(other turtles-here != nobody)[
7 P2 J4 h. F' Z" P- H& u. s$ u

& p. }5 G* T3 v0 bset customer one-of other turtles-here

2 o6 @8 ~" @& q2 Z9 ?  p( ^! x
  y9 N9 ^# @. Z2 E- B) |;; set [customer] of customer myself
/ O8 G4 f, C% Y2 u% t) N4 D2 Y( m( ]8 h

, H6 e8 J/ S; W' h' Xset [trade-record-one] of self item (([who] of customer) - 1)
7 |* S$ X, a$ c% i2 O[trade-record-all]of self6 D- t; H2 n& ^* K
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

' l  D: Z; a# i. C& q# L$ N; {: H0 X; L7 ~  f. Y- ?
set [trade-record-one] of customer item (([who] of self) - 1)4 ~7 y3 l' ?6 y% Q
[trade-record-all]of customer
8 w3 i& k. h5 f; k5 I7 W. H0 D/ t: l* G

' w$ f2 N' c; j) w* X; y/ q& xset [trade-record-one-len] of self length [trade-record-one] of self
1 n9 o) o- `8 H
' Z9 a: L; K$ R
set trade-record-current( list (timer) (random money-upper-limit))

& N: |1 I# Y+ ]  T- p3 f. ~2 X* j2 L, L/ k7 Q4 a
ask self [do-trust]
$ c  q6 \5 o$ y1 w  u1 W/ H;;
先求ij的信任度: x- e4 |4 ?  P

4 Z' ^: p8 D6 `1 w9 H0 i/ f" A! aif ([trust-ok] of self)  g, j1 i, N, J2 a: ?7 ^5 j0 B
;;
根据ij的信任度来决定是否与j进行交易[  S8 V* \4 X& k7 [
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself, T" x; ?1 j. T8 ~  Z. v
- s+ x% |* L& B) u( A. x0 t
[

/ C1 y2 q) N) Q$ Y* T  o  C# g6 h8 K6 k( h, {% t
do-trade
" U1 P; L% l9 ^* [
5 |& o( e7 @! j0 |
update-credibility-ijl

( {: p6 C. p: B) }# Q9 _9 Q! o7 {" D: p* @3 B! s9 @" g
update-credibility-list
# c0 }% ^* H0 T  E& O5 F
3 @; E/ `- H8 |# H1 Q/ m* H
; X" O  y( W# i5 J) d. W
update-global-reputation-list
) v! s! f7 u# B: E( w
) ^" Z5 j! A5 ?; ^0 b6 b2 s  O6 z
poll-class

4 `( C1 T" W" ~- {/ ^: _
' ?5 Q  |9 p; j  Y& Gget-color
) i9 @- s( M0 R, t' e+ ~3 I- _
: [; T# a: A  L. ]% ], W
]]
* @: w/ G) ^3 n1 w, d7 e! a3 L, Q: d+ q8 R2 \1 w
;;
如果所得的信任度满足条件,则进行交易% x1 W" s2 X% R4 i  y
1 y1 v1 X2 M' h; L) O* W
[
$ [5 u+ F/ |8 L4 y3 X
3 @0 t/ Q3 v0 w% y5 @
rt random 360

4 M# c2 t7 [5 \! ?; A- k2 E" s% t4 Q4 I  Y! d
fd 1

0 U, R8 `3 d: W1 G# o8 t+ E, ~1 Q3 v- @7 n- Z
]
: u5 n& `' t8 ]. t6 j
" I* o- C- y2 ~) V6 _* z' K3 y2 X
end
. D+ z; z! H$ y- }2 D1 f6 O1 L

% A& W5 U+ H" b' c5 B3 [to do-trust
( F4 f# L" v' W3 v& Kset trust-ok False
7 l7 g$ Z7 G( O5 l+ V. i3 l3 ~& L# O  N9 z; t+ D

1 B2 F. L8 v8 r, a" U! b5 slet max-trade-times 0
) Z% k! V) X+ b* ?! v' e1 J$ p1 fforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]! R, Y6 U& |  f+ M( O
let max-trade-money 0; p1 F! {8 C7 G; z$ Y
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]4 x2 i7 H) X" C) d( K
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))$ C& ^* u; m* S* K, p

/ B% P) D; {. ?5 H

9 S6 G+ M. a1 |7 V& _get-global-proportion( i, s  M; y; D7 ~( J9 J* n+ m9 u
let trust-value' [( M# W/ ?7 F' }# |
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)

) M$ o$ J" u1 N" Yif(trust-value > trade-trust-value)' @$ D$ E/ U6 x0 A( L, Q- `
[set trust-ok true]7 V# O+ ]/ u9 y" V3 ]" d
end
, |- q' \1 u8 o4 b) `+ v
0 s/ q6 G% [/ u0 c6 mto get-global-proportion; O- s3 L, i/ J; z+ F
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
  I1 M5 \+ L# T; Y[set global-proportion 0]6 z9 O$ _' r+ A6 B( x  i
[let i 0
; X3 ]5 \; f* \let sum-money 0
, n- ^3 M/ V: v% C, h) b7 zwhile[ i < people]
  f8 p% X* `( s# R+ I[
' V, \4 o$ o! h& B& H5 I9 n2 D5 Mif( length (item i' V0 L7 P! z/ I, h( ~& V6 q/ c8 D2 i
[trade-record-all] of customer) > 3 )

" o" h9 q( y/ I( j# [9 X& |! x[" X) H% g/ D  R: a# b
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
# h% S3 J. J% w/ D, ?! B* q4 a]
9 l- E; o5 _) y$ y/ z]
' ^, X4 n- r/ |! }' _let j 0+ J' n# v: ]5 G! J9 p' g
let note 0/ {5 H( ]* B0 b0 k0 C9 ?$ C
while[ j < people]
1 k) B8 q& J+ c" y' Q[
4 S  i% A& d2 }1 O# [/ l. ~if( length (item i6 l1 c, J9 E0 W
[trade-record-all] of customer) > 3 )
* u0 V: n' W" ?4 U1 e- u0 L: I
[
* @3 u$ }2 P* C& y+ Z4 nifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
) S7 _6 k9 q$ ^9 q8 E9 x[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]1 ~% D8 X: l) h' U. U
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
/ h. Y7 ], L8 L  T9 Z4 s$ U]
3 l  w( {1 O1 \]
& e2 D6 A3 ?, I6 J: S/ n" Wset global-proportion note
  F9 l: |) x) v]
( f3 w  V6 R& Oend
; w' v1 i8 L& g$ |7 ^9 N: C
- Z9 O: ?$ G, b8 p; Rto do-trade
8 @, S$ y4 V+ H2 P3 [! m;;
这个过程实际上是给双方作出评价的过程
- j  b7 Q( b. H4 }# _9 h. S" x$ pset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
$ }( a0 A6 a+ ]4 }1 w( qset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
/ @( G6 }9 M- |3 y. d9 gset trade-record-current lput(timer) trade-record-current/ z2 e; x- d) j( y, ^# h
;;
评价时间
( W1 _- f: O' A/ Cask myself [- a* t% ?& @2 `  ]# t
update-local-reputation+ H' S) s" i  T; _' h) i& T
set trade-record-current lput([local-reputation] of myself) trade-record-current
  ?0 ]  {' X, c1 F]
( [# v/ l% i! M# b4 fset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
2 }8 f) k  x! [# B% ^& z7 A;;
将此次交易的记录加入到trade-record-one
& K5 x3 c0 S  K$ b  i4 M  Fset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)4 a: c. L  ^' g5 p& m5 h' p
let note (item 2 trade-record-current )
2 ^. z8 @2 T2 U% z; f9 i# Nset trade-record-current# i7 U+ K* B6 G; _8 C- O
(replace-item 2 trade-record-current (item 3 trade-record-current))
/ k" X6 G6 L. d' j1 d; G+ w
set trade-record-current
# Q/ f) @* c8 \/ g0 W(replace-item 3 trade-record-current note)# }6 Y: Y3 h8 S7 H% E; e

' V( G) Q* X8 o* u' k

0 f% T$ e& c' Z1 S* ^& Wask customer [. ]4 y3 [3 L0 _' v
update-local-reputation  n6 |$ }" Z$ G4 Y; ]
set trade-record-current
& z+ i8 S) F6 x# U" i(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
# [+ }( |4 ]& A; ?) J1 |" H
]6 {; i. w6 u8 i  `$ U+ U

- B2 s/ e# F  t4 y

# s. Q- r4 w' Wset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
8 I7 U$ ?% K" f2 Y, i
& F1 W2 K6 b- k6 F
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
, N" g' J( m0 v1 d: O; K;;
将此次交易的记录加入到customertrade-record-all
8 U3 m& O7 h, _9 Wend" d( N9 U# W* W! I' {
0 X% V9 H7 r/ h
to update-local-reputation2 P+ q& M# }, g  E" A* ~! @
set [trade-record-one-len] of myself length [trade-record-one] of myself6 ]& m; I+ Z- s+ {. t

; u7 T$ i9 D2 |1 n8 {& U4 C; C* t0 g' ^, ~+ N8 o6 I
;;if [trade-record-one-len] of myself > 3
" o4 Y& o/ n4 O
update-neighbor-total
/ a! W) V, W5 I% o4 E  \;;
更新邻居节点的数目,在此进行6 ]0 w# b1 |2 y* c
let i 3# A/ u# u6 |2 M1 G# t1 [
let sum-time 02 D  p2 M& Q2 z
while[i < [trade-record-one-len] of myself]2 J0 B" x' q4 {. c  ?( Z
[0 T3 R3 @: ^$ o1 O" b2 P) `: c' X
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
6 p! V4 W* L0 P$ O8 m4 U- s, O  B0 \' ~set i. m7 Z1 ~4 f1 S& x
( i + 1)

4 p% Z, ~9 \6 t/ }' U]( d/ \  \0 F8 M, l9 b( M3 y
let j 3
% B& Q% ^$ ]1 Z9 Z# ^' g9 blet sum-money 0
( J' d7 W' E' h9 E, |, R# u: ]while[j < [trade-record-one-len] of myself]  J8 t; R. U8 |' V! w
[( Y! o5 L5 F/ J2 g9 J+ o: 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): N$ }* l9 H& ]8 [' j, m
set j& W3 J' M2 i: O" z7 c8 v+ |
( j + 1)
6 g7 W' x' E9 @
]8 I, f6 m2 k6 |1 W# x  ^( L) A
let k 39 C! Y0 p$ ^" p$ u
let power 0/ n9 A3 s  E3 J8 Y7 i
let local 0
' m( R2 k( Q6 F4 d$ r  Zwhile [k <[trade-record-one-len] of myself]# B+ R+ k- W, d& e. g7 _
[
6 p/ E9 B1 c% \% E9 x5 vset 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) 5 R$ K# i  r" h3 h! s% I
set k (k + 1); j, C% ]% d  Z& t: `6 x
]
: E) {; h) Z2 a2 R+ U* jset [local-reputation] of myself (local)+ d5 T9 u) ]& v- H
end
9 Q+ O) ~0 m0 z! C4 I
6 {7 m3 o" a* d4 o2 E- B% ]to update-neighbor-total; e3 _, b! \4 R3 s, e5 Q9 }6 j0 |
, d' @, Q: m. O% E3 M
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]1 `# y& Q2 a  p( q
' Q; i5 b! \7 r
- G8 d8 c! l! T! Z% c  k
end
  \4 ]$ G: Y5 c9 N$ v) |) I7 s7 @8 d
. ?8 B" [; k/ r8 i# Xto update-credibility-ijl
+ U1 s: e& v) e; m) v- \$ Y2 n
  Z& c! g2 D/ {9 m# F: Q;;
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。
. h& n' i- b# glet l 0. e. u" _* _6 h! D) O% C' J
while[ l < people ]
- }/ N' \$ m+ b6 Y+ U2 B) A/ o% E4 v4 ?;;
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
4 x! {! T+ X/ [" t$ @- H1 A[" C' ?0 f5 l; r' u2 n+ g( k) k
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)- Z8 T* B# I% M; g, v
if (trade-record-one-j-l-len > 3)
8 X- e1 A2 r. [" l5 V[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-one3 k7 @2 j( R5 h6 Y, r% g. N
let i 36 j, w1 w" @7 u. x
let sum-time 0
; f$ ]3 T- p* l8 w% }) r3 n: mwhile[i < trade-record-one-len]
5 }6 a0 p0 K5 k9 t! x, ]3 @[% S) F9 r! X. v4 |$ }8 i, M
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
5 G% F/ z+ t5 M/ a' H* pset i4 P" _) N. W5 Z9 Z
( i + 1)

' D5 l9 S2 t, o( o4 ]]) ~7 K+ s3 ~' X, Z, y# X# J
let credibility-i-j-l 0
4 ^8 U9 E1 e4 y/ d;;i
评价(jjl的评价)
6 x$ z6 Z4 U" \let j 3
6 t3 ~9 _! U5 g. q2 d+ i. O( ^let k 46 I: h" {# y8 [7 A: T: i  v/ ]  }
while[j < trade-record-one-len]2 B$ _$ z1 V% p  `
[/ v( Z; k9 b- u# ?- _
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& ]2 R+ [5 w1 g* T+ [
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)% _8 D) ?- d/ h! c
set j
1 r$ F( U3 m, `2 }7 ^' _7 V( j + 1)

, d% m& z9 V1 m& A; k]- x! X( J& L4 x  N+ ^8 h& n: v
set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))
  h! ?7 v4 g  X3 J0 Q3 I( U* u6 d" w2 X1 }, ^  X. {# L8 ^

5 d/ t0 @8 K# h- e$ blet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
5 _: B6 A: P" ~. B- Y;;
及时更新il的评价质量的评价. i/ R) @0 m: u, R
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]3 i* p" ~5 G6 `6 x
set l (l + 1)# V- d& a' U5 l
]
" t) ]1 s; q( \. [6 P0 ]  kend
( [$ O$ U3 M& B! b* W: [% h1 s+ j* e: T
to update-credibility-list
, i" o9 H/ ~( {! ]& wlet i 0
$ F/ s# R: p4 g7 _* Mwhile[i < people]
7 Q. t# q) j; P3 r  K[
1 @& j$ w$ ^. F; a# n$ vlet j 0
( E) ]  M6 J4 ylet note 0+ E  G/ ?7 E; }' x2 U( w
let k 04 l% \7 O: N0 E6 @6 W( _% E8 D
;;
计作出过评价的邻居节点的数目1 D+ d9 b4 f. A+ P, B
while[j < people]
0 Y! j- H3 G3 i! V/ Z; H% H[
; U3 H) B' Q3 ?# N) F( ^$ ]5 xif (item j( [credibility] of turtle (i + 1)) != -1)
& F* ?" w" a( L2 I: ~8 T0 n5 ];;
判断是否给本turtle的评价质量做出过评价的节点' A# U3 Y; h; s# m' _5 w4 H, @* c
[set note (note + item j ([credibility]of turtle (i + 1)))
( J: O! v+ w" s5 r( c;;*(exp (-(people - 2)))/(people - 2))]
/ I! c. |* U1 e9 J- P
set k (k + 1), K( l1 G7 b: e( M# p( v
]# C1 n' `" y% B9 J( p- H
set j (j + 1)
5 K! `! j5 T6 [. J' {]8 E: ]( P4 ^) z; V* b
set note (note *(exp (- (1 / k)))/ k)' i4 K$ R4 Z; b1 m) G
set credibility-list (replace-item i credibility-list note)
, \. t6 K, [% D7 A" ]- b8 cset i (i + 1)$ N1 e/ i" `( @* L6 x( e
]/ U# U* X2 Z$ s) T/ ?# r
end
& m5 [$ g4 ]( ?9 ]$ v; X6 _# i
7 n, ?& [3 j) U; Hto update-global-reputation-list
" o& y* r$ B* C/ g5 ~let j 0( U  A' P5 y4 l8 {# g1 |5 E4 U: ~
while[j < people]5 L( C; B" M7 Z5 T0 N
[
0 m& Q( v9 }) u/ V9 ilet new 06 m) Q1 O& q2 R+ b/ s
;;
暂存新的一个全局声誉
# E" g) n% o, c- l# @let i 0
7 D- O! p. ]0 ^# L) b+ k% e0 R4 `$ {let sum-money 0
2 s# L" ]/ Q8 b$ f: ]let credibility-money 0
" M" I6 \, j; i9 [( s, j. w- {* Vwhile [i < people]2 W' g5 H) X" G1 d6 f. a, Q8 m) Z
[
; {' Z$ ]* Y9 K$ N  S% H: sset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
+ P. i$ H. H, L. V0 w8 Iset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))2 Y  F% {, h: o+ z/ _$ C
set i (i + 1)) ~2 ~  B) @' a! w
]2 O- x9 f* Z( f* `& S4 T( t
let k 0
: |, `0 @: A  j. \; ]let new1 08 V% j. @" x3 J' K# s7 m
while [k < people]
' s! R  P+ J) D/ q' W[
. W( [: i; }" i/ k" ?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); B* b4 G9 s/ x5 J
set k (k + 1)& b& P5 Q  D4 r% L
]4 S. ]( {2 _2 p
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 4 O* n; U3 v* r- t, c6 u! O
set global-reputation-list (replace-item j global-reputation-list new)
& U0 H6 f& z- z3 Oset j (j + 1)
& c7 [, s6 x4 Q9 []
5 L8 m$ k6 \4 C1 bend
* a4 z) B( v( a" y; _
$ ?, l  k5 Q% q" E7 j
$ H2 h. G8 [. {1 D6 d$ C. B3 K( ^2 J) M; m& i4 w# W! j
to get-color
8 R$ I/ _  {# t3 a( m0 Q
: B9 D% ^* i3 P6 W+ V( R% Uset color blue

$ ?& y' f( x& }* ?end2 R4 d8 Q6 M2 B( L' y# U6 d) Q8 K

! a: f: e8 ]) Q6 ato poll-class
+ z' r. Q! V/ ^end
/ O8 D+ r2 G! V! u# Z! a3 y
1 ~' a, y: t' f1 lto setup-plot1, w) K: M6 U7 A! `8 ]2 h; C
  F0 H5 r0 W$ |
set-current-plot "Trends-of-Local-reputation"

8 F5 h1 ?; a1 s7 h# L3 j' c0 B9 o& P8 J  o/ _6 _" |+ W
set-plot-x-range 0 xmax
! X. }, O4 _' ]

8 _9 G1 ^; ^9 k7 m! Xset-plot-y-range 0.0 ymax

7 B# t( v7 A1 e: ~end
- h' y* E, S7 m5 f  P8 E+ R2 g5 U2 X7 R9 |8 x* s3 k- X
to setup-plot2
. \% [% d3 Q3 S! H4 L6 u
( ^8 v! [, P- |! i- a& iset-current-plot "Trends-of-global-reputation"
9 G& S+ H# M% Y7 b/ J, u
: i( B/ ^* c6 F' Y: Q
set-plot-x-range 0 xmax
( ?4 ^( D' u0 l2 w( u  V
7 h8 V7 T/ }9 r3 ]2 d, |; A( Y) o) c
set-plot-y-range 0.0 ymax
& ~) y/ Z7 l2 w* ]7 J5 m
end4 C1 ?3 t2 J5 `( Z! n4 q' d- ?

3 n) C8 o1 F$ @to setup-plot3
2 p1 I# y, H. z+ y
3 H' }' y9 X$ Rset-current-plot "Trends-of-credibility"
: T4 e) n5 G5 `% d: f- j
  C4 G3 E- u: H6 J1 k0 D
set-plot-x-range 0 xmax

3 w, N, I: s7 |' h# R( q. p5 N9 C2 N4 ]( P, M! ^, q' l5 H
set-plot-y-range 0.0 ymax
8 m2 S* H9 u) d) Y# P
end
" [) Z/ Y2 \# l8 ?6 ~; h& d  q% v- Q3 @6 o: J: [
to do-plots
/ e0 B0 [, n% k8 P4 ^" m9 C3 t) `; ~set-current-plot "Trends-of-Local-reputation"
) |4 y1 M4 ~1 ?9 cset-current-plot-pen "Honest service"* R7 p4 p3 N8 y0 c
end
7 `( V- k# F. s# p& n+ I$ S) H  |0 X8 A4 {2 Z; M$ {
[ 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.4 X9 b7 V! J2 X2 m
- x- [0 u# u' J$ l% x$ 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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