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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 Q* H$ T. H& @to do-business * u% _6 k' R7 \
rt random 360
4 n" w- z# D- n fd 1
! o6 ~- J8 T; g4 ` ifelse(other turtles-here != nobody)[
7 T+ W/ t$ S1 K  D* f   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./ v, l2 I. v. U
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
; T' N' F0 l+ J. r! z   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
* g9 Y( q) j3 R) Z, g* z   set [trade-record-one-len] of self length [trade-record-one] of self' h, B8 F& e( e5 O4 i; Y$ n# s' a3 e, `
   set trade-record-current( list (timer) (random money-upper-limit))3 H1 v2 K% F$ Y; N( Y2 Y) x

9 t0 c# {$ b& H  B问题的提示如下:
1 K* t/ T9 W, z# Q3 I+ g, q% C3 ~4 S  D8 o4 Q+ U/ \6 [1 e
error while turtle 50 running OF in procedure DO-BUSINESS
1 y$ X; U$ F$ \6 `  M9 Y  called by procedure GO
' Z% L) i0 @; n7 x7 A: MOF expected input to be a turtle agentset or turtle but got NOBODY instead., ~% `4 o) b9 c* w4 N
(halted running of go): C4 W- t2 J% u. ^
8 o: b  a& _" o" b
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~~6 p3 \* u+ O3 d# A( S5 X
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- m$ V# C/ p5 w8 D% g+ m# {
globals[3 D" L) i, D8 {% X
xmax
+ }2 Q. p7 X  fymax
! o2 @- \8 y/ h  E  t# xglobal-reputation-list( n: h) Z+ J6 F. C& F$ K- X/ r
) `. D$ h5 }+ E9 G& u5 P
;;
每一个turtle的全局声誉都存在此LIST
' Z6 b. G9 O4 X& Hcredibility-list
: R& q7 U# F7 v4 h) }0 `;;
每一个turtle的评价可信度
: ~3 S0 O- Z( u; Y0 K2 ohonest-service! J) v6 L; {0 Y9 a+ ]' K
unhonest-service9 y/ }6 f, p  p' a
oscillation
; |, A" }- Q4 ^rand-dynamic2 ~, K' Y: p% ^
]
) j# d% I4 K. m* ?+ S! N7 Y2 n& {0 ^5 o% Y- x5 N( [- p0 n
turtles-own[/ n& p, A) k5 c1 X' p9 T% M% y
trade-record-all- `) H+ c! f* v
;;a list of lists,
trade-record-one组成8 ?+ Q( i9 i: |
trade-record-one+ a0 q( s1 _7 u* S. |/ l" x
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
5 Z9 c. l/ w6 j2 d$ H
3 l* n8 z. J2 u0 N5 v/ e;;[
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 `8 Q2 A; O/ U6 ~
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]
, M( ~% q, p& V+ Gcredibility-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& f2 q) H% ~* z
neighbor-total2 F1 G) K$ y0 M
;;
记录该turtle的邻居节点的数目( E/ I5 h- l3 c) r; E
trade-time
' O% L) d9 @# [;;
当前发生交易的turtle的交易时间# U& S4 }& P9 ?/ x
appraise-give
5 G* ^4 ^! j3 j; m;;
当前发生交易时给出的评价
+ W& v# d& L3 f5 }appraise-receive
( `, I$ Y) i( ?$ X$ B9 r( q# @;;
当前发生交易时收到的评价
2 V/ w( W; _1 K3 B6 `) ^appraise-time+ h0 R5 l) X, b, \& b" t: U
;;
当前发生交易时的评价时间
; x0 }" K9 S  @1 y- Llocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
8 c& H6 _2 H- w: Htrade-times-total& ~3 {5 ?4 J* X) ^/ {3 Z6 V
;;
与当前turtle的交易总次数
, ~% z2 u" {. V8 o0 Ttrade-money-total
5 e- f' E7 h) A;;
与当前turtle的交易总金额
6 S9 M, _! ?( R) v* A0 Llocal-reputation( G# w$ {1 E0 X3 b# E- L6 Z+ R
global-reputation
9 L( F4 g# u. p+ z% J) u( s0 Tcredibility
5 A; e8 k9 O; ]' K- e3 `;;
评价可信度,每次交易后都需要更新
0 A9 W5 y8 w$ Ycredibility-all& O" b9 Z2 H# m, B# O, m
;;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; _( h! \$ ^- ~; s- f

( Y+ L) b5 r2 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  o% B2 K4 L% D+ V% T( O; y
credibility-one
1 F5 p0 w1 D0 r' R- S# |;;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
! G. Z1 \/ z0 o  c7 Y3 X& @global-proportion
+ o3 K; [; K& n. g6 H7 |customer6 I3 |6 E$ a1 X$ M1 u
customer-no
+ u0 ~* y* B2 ^" Strust-ok1 ~1 t8 C% _; L, X8 I3 W- M8 c7 W
trade-record-one-len;;trade-record-one的长度+ T) W/ |7 _4 F2 l' o! z9 ~/ F
]" B% \+ S# B  e* z4 b2 g

( E2 g& n' q0 ?5 W5 G;;setup procedure
1 H2 x0 m* s  G
) n: r! @* L6 c" nto setup
+ ^3 Q! @1 v* t- C+ z  T& T# s# [0 a' y4 {5 I& L
ca

, z2 V, o  v7 @! F3 M
; m3 \- @0 q, n7 p8 M# Sinitialize-settings

5 D+ G0 P& D* I/ L' N
7 P4 f( D' J0 }$ \  P: T: Vcrt people [setup-turtles]
# K4 y3 ~( h5 N) r7 j
% K, w8 a0 r7 F% `1 [
reset-timer

: k$ v* l# a+ i" r; U/ _2 H7 {# j2 L2 Y5 b; ?3 r
poll-class

  M, c1 B6 q% V' j, b+ U* ~
3 u. p# S4 _0 R9 ]setup-plots

2 S( d, N4 E, R( B+ O
9 |: L0 k1 Y$ ^1 O& n1 r3 M+ edo-plots
7 O9 W/ u& a  o3 g4 Z
end0 g- F5 d* [7 G8 ?, p# d# V9 Y
  x- v1 D! s9 X& R% u  F
to initialize-settings* i, ]* ~7 o1 d

" M' I1 ]. i- r& }9 ^set global-reputation-list []
) g1 t/ e, e8 C8 b

+ o0 a, q' f7 c# C6 tset credibility-list n-values people [0.5]
" N: w& o! K! }" Q$ A3 i
3 e3 K$ k$ C% A6 K, b0 K  F
set honest-service 0
) K+ e, Y* K+ y( d, Z$ |& m

6 \& a' b9 i! P8 Vset unhonest-service 0
5 j. e% H/ Q% U) j! }% f1 W
2 X0 A! W4 t* R8 Y8 U9 o, }* x' h6 ?
set oscillation 0
4 f* S/ c5 ~7 Y
# ~0 V' w+ k% B
set rand-dynamic 0

3 |" m, |/ {% _9 _. a, aend
+ r0 p  v. d" P6 [& V9 M  O8 f
. ]* V7 \5 p; A; Yto setup-turtles " N+ s: ]: U& i2 E
set shape "person"
$ l) ^6 l* |5 e. Y1 R- s* ]" _$ Ysetxy random-xcor random-ycor
  A+ N' g% {6 p& [set trade-record-one []
7 }/ a# r5 ?/ p/ ~' p$ h

! W+ v- l2 y+ ^, [/ T1 dset trade-record-all n-values people [(list (? + 1) 0 0)] 9 {" W' G, b$ n. B" |) ^  |$ v

- u3 T9 a0 y& `9 n. fset trade-record-current []
: _% C3 T; q/ @( P8 L- G# \1 o- u) `set credibility-receive []8 N& W* t# l; @% j# R3 f
set local-reputation 0.5
9 D+ F3 ~% C8 [- n8 ~9 ^set neighbor-total 0) x+ p: D$ H  ~/ B) `
set trade-times-total 0. j; H/ k" A9 m6 n! X- ~
set trade-money-total 0# u- Q3 T# m( B0 p0 N7 z# J0 J
set customer nobody- m1 d0 Z9 E) m; m0 {, }4 _
set credibility-all n-values people [creat-credibility]  u9 \7 A% W1 I
set credibility n-values people [-1]5 n8 @) Y" H' `- [, ~
get-color
$ I. o  v5 n! H* w& Y$ X
5 @: s: Y) A$ c3 [9 q. G
end
8 r' f: k, [& G
0 n1 H$ \, H; g. _1 Uto-report creat-credibility
. ]: u7 o+ Q: M4 \5 ~; Ureport n-values people [0.5]
4 o) T) Q, U- W" H. Q+ send3 N7 @1 X8 ?( I' h1 \1 p

& s4 n# |4 o: B3 j* Bto setup-plots  i" a3 Y) C2 I' S7 R+ ]3 z* S9 k

: N# h# q3 r# H( y2 L* l7 vset xmax 30

& P/ r/ r( l# h* Z  k) o# s# V1 e1 T3 X; r4 e. E# `% Q* _  I( z+ Q
set ymax 1.0

& N! }; f7 W7 b9 o  L! K+ [: C% a
/ ]9 w; O( ?* [- u" rclear-all-plots
/ Z" [/ i6 P0 V1 L: Q

2 \' G7 |: I$ o8 C- J6 W8 Q7 r/ xsetup-plot1
8 `1 b7 x* N7 z- Q* r% F& P6 \( B9 P; F

5 O- y: V% m* W8 H% Lsetup-plot2

: `& Y9 u, y( ^" q5 |/ y& P  o/ C! @# n' g! K7 d9 z! Q  Z1 b1 d
setup-plot3
' L7 X2 z4 G. V# ?$ M. Q
end' t0 }6 ?7 K( ^- q

9 V+ y5 a3 \: ~( l6 T% @;;run time procedures7 \$ u) K/ ~) {: ^7 Q! k4 ]

7 L, R# A2 t" }- r& D3 j2 J+ _to go5 R. ^1 l% u; G( d' v) s1 _% J

$ c& _; ?3 D) f5 A) L% Rask turtles [do-business]
9 t- G9 k% H# ]9 z) A
end
9 e; ^/ r3 ]4 E' n
- E" A( }" t  U+ A! _" B: W; cto do-business
) U2 N( _# U" w4 f& n+ D) R8 n2 j' T

, r- m$ Q: e7 m
5 S& j& `. \4 Z0 X/ d: i8 k' {9 J) Jrt random 360
( b& N6 C, k: z

2 C: D+ t% i3 ~  Y5 vfd 1
. D8 \: r1 _0 i8 r

6 N- u; G. R* i5 P6 Lifelse(other turtles-here != nobody)[
( Z. ~& @; Z& Z0 t  R
" ~" y4 a, G# A: V  Z* H
set customer one-of other turtles-here

$ l7 {' ?& R' c3 l: E" z- k9 i
2 [* [  N4 _  z) k0 p;; set [customer] of customer myself

5 }/ P$ _. H9 W3 ^" s$ b. ?% h, ?( I% E7 H2 T) g/ @4 f
set [trade-record-one] of self item (([who] of customer) - 1)% B/ X( y- u- w
[trade-record-all]of self. l$ J6 l: E1 W1 d" c/ W
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
+ a  M' m$ n. F
- x- ^- T# |9 y4 [. B6 k
set [trade-record-one] of customer item (([who] of self) - 1)
! i/ J3 x2 {* A6 M7 X( K[trade-record-all]of customer
$ R$ H7 _/ \4 _3 L7 t7 d

# j9 `3 ]. ]; j7 X7 h* M; Oset [trade-record-one-len] of self length [trade-record-one] of self

" J1 l' N3 z' g; I5 u6 o% t( q8 \8 Q1 J2 G* T5 V
set trade-record-current( list (timer) (random money-upper-limit))
' h1 w2 X7 t: i- s4 N* l* C

  _0 U# E+ J- v8 Rask self [do-trust]: v! F( `' _/ R1 z) l; \
;;
先求ij的信任度
/ |" B3 x6 ~. p& c4 O  E3 J: z8 b' T: ]8 g5 ]! T
if ([trust-ok] of self)1 ^) ]  E) T. q3 V$ B7 b* }
;;
根据ij的信任度来决定是否与j进行交易[' }5 ^: z- E+ F3 ~
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
* E3 o) X2 V* G
- j  p# @# E3 T4 S[
$ W3 d) i9 L( v+ C+ n1 `0 v5 g

7 R/ f& J2 {. c3 b) s, Hdo-trade

% Y' W( e" b7 ~/ e8 m( P4 [7 b5 _% |* y
update-credibility-ijl

, L, n$ b* R" F& v
7 M. O" a8 j2 K& G, Q# Supdate-credibility-list
* H1 d, U, N% C0 `

- J7 R; W% U2 r( ]; s4 e( n& b4 r5 K. S, B! x$ I1 G
update-global-reputation-list

' L, _5 M5 P+ x/ P2 f- p* ?% a2 Q: H4 d4 |# O  t4 H/ i
poll-class
! n1 T7 {# Q# T& M* q. N; R0 G- |
* u* F$ w- l( B: C. t# b! S% r
get-color
: g" k6 z. y; a2 E0 [+ ?

) E7 E% M' s$ L; A7 ^  A/ ]]]
8 q; f2 o+ C4 ]9 c- D0 s* v9 F) ^* d9 Z$ N& Z
;;
如果所得的信任度满足条件,则进行交易# M% b% `, o5 m1 }& U

3 G9 J) Z# k9 u0 A[

1 ^0 _: {4 f8 `1 u: a* M9 D1 G- \' j9 h. ?
rt random 360

2 T; k0 C8 i2 m, C2 c5 d3 [* O- B/ P( D! d( w+ k
fd 1

  r: p# ^1 F6 Y* ^% R, a/ }6 E7 q
; i: h( w) J( C]
4 X3 h& V5 k. A: Y. `

+ T: o: P  V1 A- Z; l" A$ Iend
( a: I  F3 A% M. `& q6 t0 D1 f

: Z2 v1 \5 C0 u( \to do-trust
5 Q) Z, ^: {3 N( |, P8 I! i' t3 Sset trust-ok False
6 Z, Y: E. S0 m" y& M& z$ X' K" t4 C' A6 \9 F2 j( `
' O( T  `8 w, F  |* b) F
let max-trade-times 0+ d( b4 H. ~; Z3 a
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
8 J: p3 e; U. x5 x! l3 Wlet max-trade-money 0
  v" w/ M; D; B( [foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]4 y, O7 z) ]6 R$ @9 n1 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))
; l5 C# D* C+ d6 t! q1 S( o' b, u  e9 B3 g9 \9 `

7 Y2 t( w* l: Y( u4 Oget-global-proportion
7 }9 J% o$ s: Blet trust-value
; b: i$ n" B5 ^, F/ L9 n2 p7 ^8 tlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
" T: P6 _, f$ T7 l
if(trust-value > trade-trust-value)
/ T! F* g' L2 u: O' C) M[set trust-ok true]
' l" }4 _; |8 ]8 `end
6 y- C4 q/ D0 r% c2 |9 j" ~  {4 Z/ g( s: P( u3 x
to get-global-proportion8 R$ Z4 f, m) W. |7 Y" V. ^- ^4 {
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
" J% _6 {2 e$ _: t+ y* _0 S[set global-proportion 0]
; _* w2 o/ x0 D; h[let i 0
) y7 u( v' y6 o* I8 plet sum-money 0
6 u. j$ h8 C7 Q4 r. P4 [% ewhile[ i < people]
, O2 b) h: V8 O. o[
0 n' N/ x  G( `/ ~5 Vif( length (item i; x3 h: y0 @( {" ?; g+ B) T4 M  F
[trade-record-all] of customer) > 3 )
; ], k# o! X! W& `. x% @$ m' F
[
* s4 [& Q- [. E" W8 m0 uset sum-money (sum-money + item 2(item i [trade-record-all] of myself))9 Y2 S$ [9 M2 b! g
]
$ U) ?2 P0 u4 e" G]( u3 k% h& C( l% Z  }
let j 0
9 `  c" S2 f4 y, M9 B, N# `let note 0
1 a; B  B: H. k1 o* g) Vwhile[ j < people]' z2 M- o% n8 K' l
[
6 N! V' j& S* y; v* U0 oif( length (item i
* j# {! y  V2 m[trade-record-all] of customer) > 3 )
7 v' g7 J- L0 J+ M9 ~
[
+ r1 |% ]* f, C0 X+ u# R- L) xifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
- E5 Z/ i' c0 O2 o[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
; L" Y  `3 G0 f: B2 }, |) v[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
/ {! _* }: |- c( w]( Y' b6 f& S0 }! E$ b
]7 t  d, X- d( W8 F) i
set global-proportion note' S1 m+ D  _4 ~4 l) N. e
]; [  P% U6 i. `* T
end
( H: h8 {* P  I4 J
7 t5 _9 Y2 E- |& Rto do-trade- J' \3 z% e1 o  [% k4 x
;;
这个过程实际上是给双方作出评价的过程7 f! ]; f! f! k! ~8 j
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
! }4 i& X2 g. A7 b- z& I7 lset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价& }, V. g" [+ z- }
set trade-record-current lput(timer) trade-record-current
! \$ N# {/ ]7 J/ p;;
评价时间2 o5 X, ^' |8 o
ask myself [3 k- `* u. G8 x# J0 ^2 I
update-local-reputation  }& ^( h# Y" g) m! p
set trade-record-current lput([local-reputation] of myself) trade-record-current4 B$ e+ L/ i: `# j# |
]
% Z( }+ G4 t# v- c: bset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself/ n0 m) h- T9 W, {+ x$ R8 u. a
;;
将此次交易的记录加入到trade-record-one
+ p  F* Y6 Q) j% c# \set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
8 M9 I/ v' z# T: qlet note (item 2 trade-record-current )8 s- o/ z$ c& {9 |/ p
set trade-record-current
% |- D9 Z1 \. W9 {8 `: B  k(replace-item 2 trade-record-current (item 3 trade-record-current))

0 m* E( Z) @- V5 ]) |$ Dset trade-record-current
* Z& m! @$ m( u, N8 ]$ t( u( c(replace-item 3 trade-record-current note)3 w$ E# j9 P6 P+ \2 K% t" E

$ \9 O! A. F( |
% B& G/ q5 T; b3 x8 C9 _2 _- v
ask customer [7 b/ M! c& R  e& Q
update-local-reputation/ W) _2 v* [9 K8 o, {
set trade-record-current
7 |/ d1 O4 F9 A$ h1 Y+ b(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
7 k" o% r9 E( x
]7 s& L) u% a- S8 p" K5 |
; b2 N. m* ^1 L% ~

: [7 e* T9 J% Iset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer5 x2 Q5 d/ d4 X& _+ D2 u8 j9 q5 u* F
0 T7 C- n5 P& A+ F4 ?, E
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
0 a% Q  E5 U8 s/ I;;
将此次交易的记录加入到customertrade-record-all1 L* C, O5 E, L8 s
end
* Q+ ]( U+ H9 g8 R1 S  C7 p' \' U0 G: M( Y
to update-local-reputation
" B% K# h* x: B# Lset [trade-record-one-len] of myself length [trade-record-one] of myself
- R' h2 D/ [0 U8 f: j9 \. _$ n
& Q, }0 d" v) ^& A9 w/ H0 c6 @6 Z- A, x
;;if [trade-record-one-len] of myself > 3
8 N' W3 D: B3 f. s5 V* f
update-neighbor-total6 _; g& q& y5 |( d; K
;;
更新邻居节点的数目,在此进行
+ g$ E+ Q9 N) g- F+ {3 xlet i 3
/ @$ c, r2 s" C9 v0 R, flet sum-time 0
8 K5 c$ o* U: r  Wwhile[i < [trade-record-one-len] of myself]5 S9 ?) W$ t7 H& y
[9 N9 i: r. s. q# G' z! n
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
* c) ~/ C% ~, Mset i
$ N7 D+ y: X% H) w+ e, W; l( i + 1)
0 L  P; n) p, s
]
; j. \1 ^; @8 X1 ylet j 3. {0 ^8 r& P& O) ?
let sum-money 0
& u: u# k$ ]3 {% I7 Lwhile[j < [trade-record-one-len] of myself]3 S& [8 H5 y9 ^2 T$ F4 @, W
[
7 A3 H. K: a% c! j; ]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)
9 C( x  C$ {5 U0 p* J& U6 {set j
& g5 d+ {0 q4 o- A( j + 1)

# l# T% h: V& t' D]
. F6 a) j# u# w6 T/ }/ Zlet k 3
7 J: @: L7 Y# `0 t) H+ glet power 0; |6 k3 B  a7 F5 ~- h/ k* F- J
let local 0
* ^' \1 A+ ~% Uwhile [k <[trade-record-one-len] of myself]
' ?/ ~* f, E8 |2 i# W[
1 [  Z) `7 M5 [5 q7 k- I* T5 B7 Cset 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 U1 f" `' M3 ^
set k (k + 1)
4 w9 `  w8 V2 ]1 K0 h]
- G( Q% y5 e$ D5 x+ K$ k3 Yset [local-reputation] of myself (local)
* S9 ?4 a4 n. r/ Tend  z3 E% b& d6 ?- ?, {
+ j+ e# n' C4 I, u5 E4 g
to update-neighbor-total
8 I0 V, L: }" x# g% ~6 B8 j# |6 X( L6 m  d
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]9 P( i9 y' D* Q6 ?1 L
: \- |6 e+ @8 J# R: c  z" b
0 e1 x. c( O7 |
end
+ O; s( H+ M- r2 E# w: U; r1 u2 w; q/ Q& [! i% Q' X
to update-credibility-ijl 1 d0 e! E1 v" D. O) _' n
8 p6 ^7 y+ E1 [& G, W! i4 f
;;
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。
6 ]8 x/ g2 }5 U7 L6 ?/ P: Nlet l 0- W, R3 p0 v4 [; w
while[ l < people ]4 U/ X' d) g* |5 h
;;
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
, ~* n* R  z7 G[
8 |3 k, c* s( i4 v8 }! |8 ]  V1 U5 clet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
% x3 s0 x* x2 Y& s+ iif (trade-record-one-j-l-len > 3): w, Z/ i; S$ T$ Y4 }$ m% {/ Q" l
[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
8 r, V: `& Y: W$ P# K9 ~" p3 ^let i 3
, v9 B6 n. T. flet sum-time 04 n5 y! n) V' m5 A
while[i < trade-record-one-len]
3 B) A) _7 p( }5 r: r[
4 k; a2 f8 H" B  |$ Lset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )! Q" U* X! c; L5 r
set i4 {* j' F1 W0 ?1 F3 j
( i + 1)

4 B& ?0 K7 l- b: K( Z0 f) ]* h/ U]$ X5 v* S5 G/ O; l! \$ l! o
let credibility-i-j-l 0
/ G1 w$ t+ T3 C- |- u) ^;;i
评价(jjl的评价)" A# o' y* s/ b5 p
let j 3
. Z- \! n3 X% I( N- V( T$ |let k 4
# z1 x$ p" }% F3 }while[j < trade-record-one-len]
9 ~+ J( e5 E& O& p! a4 x[
9 ~; f( d% a, t" }  H0 bwhile [((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
- @- D+ T- P) e& I3 Rset 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)
( @/ `; z; _- K6 f$ Aset j
: X& J" u: y: C- p( j + 1)

6 H% [9 {! a, y]" D3 }8 [! C/ |8 ]
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 ))+ a4 i; Z% k9 n# i

: y/ p+ T2 @% f5 z( V

( W8 D+ c* U; Z! k9 U$ S5 B+ k- qlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))2 E8 Y- ]2 ]. E0 O
;;
及时更新il的评价质量的评价
# Q5 l+ ]1 s7 ?! ?) Mset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]. x9 C7 [6 ]( K8 x
set l (l + 1)
! K1 [1 R" a9 Y, B]
8 d# `; o: ^/ h" U" Nend
( v# j# K% n3 L- c) o
* W/ f8 X2 }. M4 k. Gto update-credibility-list) v; R0 i* |  l4 N
let i 07 Z/ c9 p/ `6 J8 `# A; }- U
while[i < people]) [7 _1 q$ Y( \8 Q6 S1 `/ p
[
( ^; P; g; `' O+ u2 C/ l9 Xlet j 0% h5 \7 _0 y' s; r3 m
let note 0& e2 y. e: Z# i6 s) O- C
let k 0- ?- j( P9 P. l: f
;;
计作出过评价的邻居节点的数目. E" p! ]3 R3 j# s0 B4 d
while[j < people]2 Y' A% h+ Y4 k& N( X. g5 M, w
[
1 \) O3 |6 m3 j8 qif (item j( [credibility] of turtle (i + 1)) != -1)
  ?+ \1 Y  u3 C8 A, ];;
判断是否给本turtle的评价质量做出过评价的节点: @4 G; ^9 j$ y% `6 y
[set note (note + item j ([credibility]of turtle (i + 1)))) f0 ^' y2 ?1 E: z7 ]5 n  f/ ^
;;*(exp (-(people - 2)))/(people - 2))]
  G  p" n: P. x( e$ _& p3 H" g
set k (k + 1)
  W( z0 V4 h' `8 R4 _]
* S: A2 y8 G2 S+ n. Bset j (j + 1)" ]+ w! A, b* s9 u# c" e9 }
]
" w, {4 K2 d2 j" ~/ vset note (note *(exp (- (1 / k)))/ k)
) O2 G- N7 b" f5 J- p+ Cset credibility-list (replace-item i credibility-list note)
+ j0 I( ]0 D4 V( i: Q6 M$ L1 i1 \# _3 Aset i (i + 1)' j  V! x+ U' f1 \
]
* s) Q5 R: m" Iend1 i% O2 n6 u5 [% Z! K! i
( |; Y/ m) i  T. T$ r% w( n
to update-global-reputation-list
+ |2 f- |  i+ Wlet j 0; J7 Q, q- r8 r$ h
while[j < people]
4 E' u" u3 h, l0 w7 I6 o[
) j8 S7 E9 y* Plet new 0
' m/ J  m1 G8 a;;
暂存新的一个全局声誉  U6 i- F( o( o+ x+ V9 Q3 u2 o
let i 0, l) N! h& @" q* y
let sum-money 0
7 ?2 X4 D: M  l& ?% u' O/ R. ilet credibility-money 0
% w, P# c3 n  [  E: }% G' S3 ewhile [i < people]
- e+ _9 |! s3 c1 c6 X6 z, [+ ?, N" p[
' f3 f# f1 [# [+ Y' pset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
) I8 X$ H1 C) N, G, w5 `4 ]! {set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
- ]( F$ P( x6 C  Kset i (i + 1)
& r! ]# ?4 L' t, v/ X: W$ w8 `7 m, E]
, ?5 K+ d8 h' A9 ^( K# P  K2 S1 Tlet k 00 j1 i! c$ Y0 N0 C
let new1 05 j' b/ p8 t+ u
while [k < people], [- g/ }" V, i2 S$ I
[! v0 l0 m0 I0 ~, w  U- R) N* 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)
% G2 H; ]; i; bset k (k + 1)
  Y! R, Z/ P' K1 Q7 C% k- B]
$ C* H' _8 p; ?" |1 L2 y& Y5 pset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 8 m$ Y2 o0 V) P6 K5 i
set global-reputation-list (replace-item j global-reputation-list new)) T' ]9 v& c4 Z* C
set j (j + 1)( W5 O4 _  j  ]; q9 A! Y
]4 X! @! ?7 a9 Z
end) a8 P" A) _2 }: I0 }6 l6 Y. n& B

3 i( Z) ?7 q! |0 x8 N
+ G- d2 Q9 X& V+ W
! p' N4 M3 ~" i- b- yto get-color
( y0 S" e  }3 t0 L# Q  E
3 _& B1 L: S" n9 b: Xset color blue
: B; y$ _; s) X* I0 X; D! _
end
. r! w0 A" {( f9 _- O
0 `( @/ D) e7 q. W9 ~9 Z2 i% \to poll-class
; ]) K- `% ~8 }3 P# qend
4 t6 X' z6 G  F, Y8 G0 K& m+ X, u* K: n: b6 l/ t
to setup-plot1* x  @0 Z9 c) a8 a- n7 D

8 o, y3 O* ?! q1 V* t' fset-current-plot "Trends-of-Local-reputation"

. `3 X1 x: T! z& ]) R5 m; r( D( h( u/ }, L0 v
set-plot-x-range 0 xmax

; X5 _! H. j+ ?6 Y' K( J  J
. e/ |5 y0 t; ~' e" O. `set-plot-y-range 0.0 ymax

' V! F, o9 V7 l2 cend0 K5 L# v: l0 Z; ~4 k

  {, {( P+ A& z( B6 V8 H7 vto setup-plot2
9 J2 r$ D6 H$ x2 R' L
4 O- j- e2 h6 Z! p$ r) t/ g0 zset-current-plot "Trends-of-global-reputation"

6 X0 ~+ e* _7 s8 n. `5 H; b* K$ [. ]) g7 S! S" D& ?
set-plot-x-range 0 xmax
' E  L. ]" G, T; y/ x) R, w+ ?# i
" o. c. l8 K! O9 d& g
set-plot-y-range 0.0 ymax
3 l& E" n: N* `/ K0 D7 ?# x
end/ C7 c6 R9 B, ]7 U( @. f- k5 c8 x

5 I9 q) J2 ~' I; T9 @to setup-plot3
% s' \( n" U7 F8 e$ ?- u. V+ \7 u, E3 X) c2 [$ N
set-current-plot "Trends-of-credibility"

/ R( K: y2 @: c& h7 p+ @1 Y9 l$ `8 ]# N# {6 l& o/ A% _
set-plot-x-range 0 xmax
/ ]( ~( P- P  g  D" Z
# x0 ?- ?2 b8 s2 q: s
set-plot-y-range 0.0 ymax
3 u; L  Y& `. C- t5 V- y
end
8 T& t- X, e; K/ B, E* t' g0 E3 I  }. ]; d# O9 F# X1 d6 x
to do-plots
0 w, u$ s5 E7 k3 i$ N; @- Iset-current-plot "Trends-of-Local-reputation"
# s) a, e- C) M  U8 B0 Cset-current-plot-pen "Honest service"
, R+ ^4 {% \( J3 }/ w8 T0 f) Hend
3 N$ E6 h* v, V" X1 f; _
9 g8 Z! c* G! }: @[ 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 H$ ^- \8 p
/ a$ J7 r1 s2 `" p3 R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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