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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:
6 Q5 o6 S$ H* U( f# Jto do-business / f: w8 J; }6 F; X- v1 @+ `; r
rt random 360- K( T( L( G1 C. Z( t
fd 1
$ @4 {1 y, j7 D! ?+ L6 {1 m# Y ifelse(other turtles-here != nobody)[( Z, i1 ]* d1 y% q) f4 q  W8 J
   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 S/ d/ J" u! \( Q" G3 i% h% R" ^   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
) s( @; o4 \2 [) @/ \% U3 p   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
' q) a2 S6 C3 u# [/ C  }   set [trade-record-one-len] of self length [trade-record-one] of self8 T! W6 P9 v+ B( T! H. z% E4 I
   set trade-record-current( list (timer) (random money-upper-limit))
* S+ B+ H6 |; o- \4 |0 q5 W! X3 W, W5 V) J4 G' E! o
问题的提示如下:/ N, X& b' W( V+ L5 V  [2 g

, I9 R2 V5 N6 m; f% terror while turtle 50 running OF in procedure DO-BUSINESS
0 d" L: Z& W+ z. m2 @- Z  called by procedure GO
2 |- t" R/ w) c6 V3 LOF expected input to be a turtle agentset or turtle but got NOBODY instead.
( f/ v2 `  u# Y" Y! ~
(halted running of go)( \; g: @( X) N8 y0 o8 i: L

1 _3 x/ S9 r) Q5 f4 W5 s+ |8 p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~~
; m. u/ N! i: ^( ~$ T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
" E" p: q4 g" a& @globals[
6 }7 w0 F6 A- ?4 xxmax: w# R, P' R! I8 p; j+ j
ymax
5 `* l; D& m* W/ Y) d1 nglobal-reputation-list+ d; f" S* Q& H0 `/ H' r

+ J! Q1 D1 x6 C; A- {; H;;
每一个turtle的全局声誉都存在此LIST9 ]- j4 T; ~7 D' e6 ~3 A$ Y
credibility-list
/ a/ G5 G; X! u2 S, B;;
每一个turtle的评价可信度
6 ]% Z( E6 D: f' X9 Z1 l- D& @honest-service( `7 z( j6 z; z4 e
unhonest-service
6 L9 T8 f( y. h  H. a0 yoscillation8 Y. m4 W% P; q/ b- h* l
rand-dynamic1 p/ U% D5 |6 l6 t8 d3 ]: @! h0 {
]
3 [+ P; K$ K& I* N3 w& c2 ]
' P9 G  u4 Q7 sturtles-own[
  V! f2 Z  T. m& ztrade-record-all- ]. ?/ d/ S) f( r, B& `7 j/ m
;;a list of lists,
trade-record-one组成$ S5 J8 r7 I& R
trade-record-one
- t3 }, _$ a+ I$ f+ E$ o;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
) X  k" u" A8 E, E# M. Q* `3 x* v% H6 V0 m- Q) q6 X7 E: G, f
;;[
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]]
( K. o  v0 q9 R4 b4 C  n) Ftrade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]
3 t8 i& U+ I1 F+ w- j( J" dcredibility-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& Y( ?9 i  F5 g5 \, X3 `
neighbor-total9 K8 F' |0 B& A! G1 _
;;
记录该turtle的邻居节点的数目0 I3 z' h+ }6 y( A
trade-time' ]& i# ~6 Z/ U4 _; R
;;
当前发生交易的turtle的交易时间, A( ~1 g7 ~" ]0 g, H
appraise-give
8 ^3 I4 p$ m# q;;
当前发生交易时给出的评价/ I) n0 G9 C+ \. H6 d# G
appraise-receive# q& m, W! o" F+ t: K1 I
;;
当前发生交易时收到的评价: v2 d* j& N" O. A  Y
appraise-time
8 V5 _+ O% u; c* F9 @) H4 T;;
当前发生交易时的评价时间. K( ^  S/ O/ @& U
local-reputation-now;;此次交易后相对于对方turtle的局部声誉5 a* P/ Y+ B' [5 S- s7 h
trade-times-total& x2 p4 p5 _$ D# t
;;
与当前turtle的交易总次数
6 k/ W: f3 c2 u2 i, Ttrade-money-total
- S: D0 l! [  |4 F;;
与当前turtle的交易总金额
* ]1 d8 n2 G' q- Elocal-reputation
' a1 S. a' O& m7 a  l" yglobal-reputation+ n8 f" V2 s, ^, N1 r
credibility
. f9 }  W4 o% m;;
评价可信度,每次交易后都需要更新
& T% n) ^8 t5 R/ F4 x; g  R9 J9 vcredibility-all
3 `, H. \8 @/ R0 ^;;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
7 @& S) z( m$ T7 k2 a' U9 j! k, Q- ]" A' E5 ~
;;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0.53 f+ z1 d% V& f: j
credibility-one
' o. u0 [& V9 A2 o1 |9 {;;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  X5 c6 Y4 A8 `$ T7 D4 A
global-proportion# H" Y7 \6 @7 a7 ~+ T, u# v
customer! _) \4 q' k' v7 I" I
customer-no# B% x$ e2 ^' s) C2 ^$ B
trust-ok
8 @- M; H7 z7 g- O7 Rtrade-record-one-len;;trade-record-one的长度# T% e) J+ R5 v4 Y$ Y' D
]
9 s, b* o0 O  L  A5 G2 J& C) Y. M/ s+ r( x: d
;;setup procedure
2 V% F1 f+ [6 |2 H3 r* v5 j/ @* @8 J
to setup
! w6 U  Z& L2 x8 d8 J5 X- G" G2 y: |3 ^7 t( }1 p* E
ca

2 l7 C# I6 O* n, t" s
1 {! H: }1 r3 D8 v5 J$ Q- Xinitialize-settings
# O+ f3 l% N+ d# X% C
: K6 w( v4 @. B( K6 k+ ^
crt people [setup-turtles]

. D( e" [0 B; L4 X- Z' a3 o2 l5 A# R
reset-timer

  o( S, p0 j. k: Y- M7 c! \7 U% w5 m7 }/ b
poll-class
9 n: R; L% m0 X0 B) S
0 m3 F; i* t) F: q% P1 N
setup-plots

1 R' G1 a$ L5 F) i+ R4 Q' {
2 L% n9 ^# N) r  s  m# F9 _do-plots
( r8 ], z' b+ E/ I
end' X8 f# |( t' T9 C2 z7 G
( t" X# K1 b6 N1 L+ H! P* F1 z9 |
to initialize-settings; Q; c6 P# T, H& A7 b: J

4 h% N/ K0 z7 {4 R. C7 Y  v- Hset global-reputation-list []
; N, I4 }. }9 x' O0 @8 |9 r

" y( q0 v! V1 X* ?set credibility-list n-values people [0.5]
5 ?! |& V" ]! v3 l
0 x3 h( R* W- d* \; C; b
set honest-service 0
! K. K2 u0 p: w* }
( v, Y& p2 J* K0 o2 r* J
set unhonest-service 0
6 f) `. ]" b' ]: O2 A

+ P, E! ^& t2 R+ _3 h/ l' lset oscillation 0
; i! s, R; o+ Y& a% R3 }
) E! m/ p* @. b% Z' N! f* G
set rand-dynamic 0
' i5 h- k8 M$ g( p9 {3 m# P6 b
end# L( G. m: G3 h
& P6 b% [6 J2 `$ p0 `
to setup-turtles
$ |/ p8 u; q' q/ x/ N3 wset shape "person"
3 J( ?& B6 C- C' L1 rsetxy random-xcor random-ycor& l4 a# ~  s# T) m
set trade-record-one []
2 n" E" u# X8 C# C
1 |4 e4 d7 H$ U3 D# k( @
set trade-record-all n-values people [(list (? + 1) 0 0)] ' m' K: X* M& q4 C5 K  c9 l2 _: Y

* t' Y+ L* u) k5 _# o7 d! pset trade-record-current []( o8 z: Z$ J' W% F  j4 f+ }# v
set credibility-receive []
8 D7 C  d; V5 ?, |9 `. D% y6 L  Rset local-reputation 0.5$ y; P; K- j7 e
set neighbor-total 0
2 \: t: C8 H) X% ?set trade-times-total 0
+ N0 M; w' z/ L2 }3 vset trade-money-total 0
. t7 I' [2 K* f0 {& Y  b( E  {2 }9 Hset customer nobody
: {' P3 \$ \" Z4 ?5 Qset credibility-all n-values people [creat-credibility], u+ p# X8 B$ i5 a# z
set credibility n-values people [-1]
: f0 b8 h5 P+ W3 {, J5 \get-color7 G! B' J( g% J' ]( S+ s
0 w) Y& H6 [8 }* }" h  J0 [, G
end7 G! C: B: B- I. r7 v

0 X, m" T$ w# N% L0 f* p5 Tto-report creat-credibility
# l. w" H- [8 b& ]3 W  W7 d) `0 `report n-values people [0.5]& G# P% a) C4 S& |
end/ N% ^  h& |$ i. x. P" ~8 J5 p
) F' I! D& K1 A/ V6 m2 Q  J5 C
to setup-plots
; ~* v, z& k3 `  c8 j" i/ c! e8 f5 @
set xmax 30
) \. l! }) d% T) e  |% T/ H9 K
/ r( K5 @5 X( g& k
set ymax 1.0
. d) C5 p/ Y7 ?' f; O* N
6 l- F) ?3 _4 l6 }
clear-all-plots

5 u7 }5 T+ K) ^; l0 |1 r$ ?/ s$ |6 t, ]& e3 N; s( O7 _2 W; N9 C; o
setup-plot1

/ I2 o9 n7 j3 {4 `* v" X/ x: U0 I  h. A* F2 z  H$ ?# L
setup-plot2

. o# [3 W1 `! L6 u* ]" t) R& L( e3 Z, c0 U' \9 y
setup-plot3

- e, H5 `  L, L' V* [9 `end
9 `% y. w8 V2 i  ~
: ^  n+ D/ f" S5 ]1 c: Y;;run time procedures
% H. S" @- V# k2 F7 q) F; R/ m. r$ a; [
to go
- R1 t# L+ V% t  ?8 J) ?1 r9 `$ o
$ l$ J# S# ~: h1 T  r* hask turtles [do-business]
9 i7 i. f5 n/ t8 O
end
, ?5 d; \( D: K8 C( |9 o
7 F/ I. h4 I4 |) u' d, ?8 s, L9 |% Xto do-business
* t9 I! K) y- C( P9 c

$ s. W( g* O0 L6 h# z4 B
, O* E. s# y) l0 R* W" X. Krt random 360
5 O& m  }: Z1 \5 i/ k  L
; t* w6 t8 [. H: R$ E4 I, V  X% J3 R
fd 1
: F  p1 g" m% _  h' c1 {+ O

) j3 p' F$ _. p5 {# Rifelse(other turtles-here != nobody)[
* @" ?4 U% s2 g6 b' j4 }. g

, c6 b0 b7 e; A1 o) q- I/ iset customer one-of other turtles-here

( i: |7 q: q9 y+ E1 U; [) M9 Q+ q3 n0 O
5 }- R& Z: X' U0 f  G;; set [customer] of customer myself

; Q8 |  }/ Z$ H) H& S9 R: O( N, Z" t
& b- k# X& t+ p( Y+ T8 K7 _; }set [trade-record-one] of self item (([who] of customer) - 1)
! v, D# S5 C$ N/ V% B[trade-record-all]of self
6 f) S, M$ W; F3 S4 Z7 z1 l;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

* P  _# H" ~" z. }. e( I$ L" {3 f  B9 `  ?6 l
set [trade-record-one] of customer item (([who] of self) - 1)
3 |, w1 I+ j2 i3 O8 g' I[trade-record-all]of customer

8 i) ]# f4 D% ^  H/ A$ h9 G9 ~3 H; H. u! O& W4 r$ E
set [trade-record-one-len] of self length [trade-record-one] of self
% w. l3 I% o  S5 ]6 u6 b& b: g

5 \- I) S$ u9 b, S  M/ t" yset trade-record-current( list (timer) (random money-upper-limit))

5 q0 X+ F9 b0 }9 O3 E8 w* H; J$ F: q, i3 O; c3 C. Z3 X8 c  l
ask self [do-trust]
! r" b. q" [* L* @' t;;
先求ij的信任度; A) F4 F- ~) N+ ~, M
  ~9 {+ _; l# O3 l* c4 J
if ([trust-ok] of self)
" P$ t. v! d- m1 N/ p8 Z;;
根据ij的信任度来决定是否与j进行交易[1 a/ k- b. e0 {; ^+ q+ G
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
# ]3 m  G/ z% s; ~0 h& p0 j7 i- A7 _& u  M
[

- C6 p$ t5 L$ w7 n4 c( h$ p% x! x+ v1 _2 T% E# C5 W
do-trade

( R7 [3 C; Q4 c( Z" d- Z; a6 |& C
update-credibility-ijl

0 u3 o2 J, y/ @* d( Z+ A4 M( O
: s! d* _& u& a' B: v6 j9 G( Hupdate-credibility-list6 \5 \  {5 b$ i" b3 v& _

" m4 b1 H: {0 B. y1 [6 l& `, _; `# _. B/ ^4 U3 d& h/ s" H
update-global-reputation-list

9 d* f" \5 H. n
$ Y5 |7 V# L6 B. K( X) Z# Apoll-class
. G. I& g2 `( t* f! y$ A

" C6 Z  ?' H8 h$ L9 u6 [get-color

5 p5 o8 ~1 M0 T6 R& I5 j1 C9 M* f6 J: |. R. U
]]4 _- @' J4 X% P/ i% W/ r

+ S5 P& i4 C$ u. Q: g4 f! E/ _4 };;
如果所得的信任度满足条件,则进行交易
) {0 v1 x8 R: `' I. x! t; P5 Z' Z) G1 b
[

) k. r9 U: P; ?8 O; [0 u' f4 G/ ^# e5 f: L  a6 x
rt random 360

' W( ^: A6 l9 x9 _# f3 N- W1 Q- O% u
fd 1
: T! ?, @+ ~  @! X  r) f4 |9 w9 p
5 j: A8 ^: H% H2 ]5 o# N7 x
]
; ~, d% ~5 R% K. Q* c

, T) y" r8 R3 q" o5 z7 N* Aend

* [8 S. y1 A' q. f+ r
# S0 W& \' Q  K: yto do-trust
& q# D2 y  w: ~6 Gset trust-ok False' r" [5 b3 }8 F( f- k+ V2 y: J

7 @2 w, t0 c+ x+ a2 u! I# I
! }7 j2 F( [4 F$ N) ^$ g2 x
let max-trade-times 00 ~+ N: F6 T5 s" p. K
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]2 x' {- G4 \2 E4 T5 ]
let max-trade-money 03 R- ?; g3 a% f  X
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]: R4 v0 @* j* w, M' x- n
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
% e( w/ D7 Y. A# K
  n) Z) I; Y. q6 Z0 d' p0 \- x# X
5 x1 Y$ P5 T* q8 \: J1 X
get-global-proportion
5 a) _% @5 N2 M2 [6 G! B2 hlet trust-value6 ^5 t1 H$ I4 t& t* q
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)

$ A+ t5 m' \4 U! M1 K# dif(trust-value > trade-trust-value)
1 H4 L/ W7 d2 ^4 l[set trust-ok true]
; [7 d6 r3 P& G4 J2 {end0 {& z- d8 D) X+ e. x) b- v

2 I! _, k6 w7 m; S# L- mto get-global-proportion
: O% Q1 S7 f$ [/ q& qifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)7 D5 P9 e  j8 ~, I. }
[set global-proportion 0]4 r( p  L. P* V8 o: }0 P5 Y$ P0 O/ S
[let i 0
2 b6 i" X* H! I  C% g& h( g! Ilet sum-money 0  N7 P7 B; B+ T% m
while[ i < people]
' y: q& Y7 l4 k) i[
5 }- r- @: _4 n# i+ O; C6 U7 {if( length (item i
8 h) G$ \8 ?, W  k9 ]' R[trade-record-all] of customer) > 3 )

! i4 P+ D& G' _* ][
( Y4 r. A4 s) v3 e* s! a. ~0 Wset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
/ c8 y" v5 v+ N]( p# z0 b$ c: A9 s
]
4 A# |4 j5 s/ P' M- A' e% Dlet j 05 D+ N; M, k3 ]) \8 e
let note 0; V3 v7 }# N3 W/ c7 E
while[ j < people]6 r( k0 _; c/ s  v( @- G+ _+ c
[" S  c/ ?7 H+ |$ o) V
if( length (item i
  Z" P5 T' |# J, _, ~3 U[trade-record-all] of customer) > 3 )
7 ^2 k6 x. T. \  \9 K
[
; y( F$ j5 w/ e- K5 Oifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
- I, y0 |. h/ O4 G) f% y$ v, B4 {, G[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
1 Q, f. |% R) L% l[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
+ r, ?% ]& h& \6 ]5 g$ k9 F]5 M7 C) O  u3 _$ P6 P
]
& l2 V' g7 _7 a  r( gset global-proportion note
9 {2 h! I. ?+ M: a2 {3 P]1 m8 P- \% n; K+ o3 u* y
end
  V* v2 J6 k# h7 Q+ J' W, Y- W8 _! _0 k
to do-trade( t8 o: r; D9 ^7 I# S% w- C9 m
;;
这个过程实际上是给双方作出评价的过程" ?4 X: w1 X2 Q$ Q# {; W
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价, J4 R  B0 z1 w
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
9 x3 A: m( T; b$ e) oset trade-record-current lput(timer) trade-record-current1 C, M- g% j" ?3 \& \% A
;;
评价时间
0 H& H) w. c* u- R5 ], Oask myself [
6 `- ?1 y5 b& }- S/ `update-local-reputation- l3 F, R3 }: J' g6 k
set trade-record-current lput([local-reputation] of myself) trade-record-current- ~7 ]$ e$ J5 }) W
]' h5 m2 F' L; ^( I* r2 L* I1 B
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself* R4 D3 o  X& B' Z& [
;;
将此次交易的记录加入到trade-record-one
/ y7 a1 D! |. j) k" h) pset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
6 [$ F9 q' m) n' C  y9 hlet note (item 2 trade-record-current )- C( h4 W$ i% g* l
set trade-record-current
- @/ {$ T7 x, j9 S  [. ](replace-item 2 trade-record-current (item 3 trade-record-current))

. H* s  I, ~9 b2 }! G; `. Wset trade-record-current/ \( [2 i8 H+ J# R& M
(replace-item 3 trade-record-current note)0 m" |6 s8 X* \: N  _. _9 ]" q
: b7 c2 @, y, `/ C; d. ]
9 M9 O3 Q7 v# x. z  a- O. R0 ~) }
ask customer [
, |% ]; H9 b, @2 M1 N6 K) K+ x" K, lupdate-local-reputation# q# p( R' \4 w
set trade-record-current
9 i. {" W/ q' Y- ^6 L4 P9 g: a0 t& ?(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
- k5 B2 K0 ~7 K3 O( n) Y
]
3 `0 r9 G7 B) e. i$ v; E4 m9 T  K+ s4 F2 E- {" y3 w
. |; Y; F# a2 e, t& W# b
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer7 r7 U& W. w% S4 J. A7 l* x

5 |$ `1 T4 n% f7 S+ ^- F  c+ L  pset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
% h4 {$ P* p/ [2 X( I0 O) a;;
将此次交易的记录加入到customertrade-record-all: s! D. b% ~. V8 O( v: V
end8 K8 Q( L$ x2 M: X% o. X' ?

  R) J2 W$ @1 L3 bto update-local-reputation+ n. T3 l& a5 z4 v9 x5 I3 d% W
set [trade-record-one-len] of myself length [trade-record-one] of myself
" w: l' Z. y' H4 Q* ?; b& H% r$ U. w+ h+ J3 d# L7 Q% }3 J  r

) @. Y4 i( ^6 Y! f* ~6 n6 k;;if [trade-record-one-len] of myself > 3
  m4 n) H3 m4 e' D4 B' [% V
update-neighbor-total
* F; N& {. t% k8 k$ Q) z;;
更新邻居节点的数目,在此进行
* T  l0 U5 q4 G: r% o4 _let i 3
1 g$ \6 {2 h1 O2 q' N; Olet sum-time 0
4 n  Z2 s' C2 W7 h8 [7 w7 xwhile[i < [trade-record-one-len] of myself]
4 I) Q+ `3 }4 M[
5 z) [8 a6 `* m2 ~; \9 J7 J5 Iset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )  m9 m2 R* Q# U, J+ l$ q0 \  m
set i
/ x8 P" i! `4 q7 |5 l( i + 1)
: t  I; m8 v* J3 H9 e
]3 h0 l: P; ~; C1 ^2 e8 n# e
let j 3
$ y2 G/ M; r  Elet sum-money 01 ?6 }) ~- E0 @: R. b* x9 s" B
while[j < [trade-record-one-len] of myself]; B$ p+ U- T4 f* ^0 f
[+ v* D! `  {  [5 r
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)
  [5 e/ R& w3 h0 f: Lset j
( F! t) |( B" X( j + 1)

. k4 b4 O8 Z' j. s4 \3 q9 j+ w]* ^* ~/ z3 t' [  w8 \2 I7 a
let k 3, d& T5 _+ z2 z
let power 0) l6 y+ N" v1 B
let local 0# v2 ~. x& o0 {  x  t% r0 T8 Z
while [k <[trade-record-one-len] of myself]1 ^2 x3 k/ ]. }* u. X: }
[
5 P7 |2 @6 i7 E& x, Wset local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money)
* q. I8 ?! H: q4 f6 K  M& qset k (k + 1)" s8 t1 F6 E: L4 ^$ ?
]
- M( U  {  A; U  wset [local-reputation] of myself (local)
' X, u/ t/ F( r# i7 Z# n! }end8 N5 ]6 g4 G: v8 z
2 I  R. E3 E3 u$ {# _
to update-neighbor-total
3 O; A# ~; y& ]; q# l3 c! e6 p. a+ j. o4 k. p* W% W/ k
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]$ Z! x; B: c; `# R4 J

$ E; \. t" M; v0 D
$ L2 T: I$ _7 }( e! K- F' p! w
end  E# b! X; i8 K: T
# Y/ r9 ]& c9 o  ~, d2 F' m2 h# T
to update-credibility-ijl
7 S' F- q. p& w1 |% q
0 ]% B4 L: |5 [0 a;;
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。
0 j; k# t$ |/ I0 p. V5 U  blet l 0
9 v7 }; K1 \$ k' E# h7 [) Fwhile[ l < people ]
5 f0 P' \" ?# j3 W;;
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& e' y9 r# I0 G. O& N
[0 W- p& x: d7 z: {* P# F
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
2 S8 `2 m7 H, P, K/ V: wif (trade-record-one-j-l-len > 3)% ~+ ^5 g7 F+ n- k5 o7 o! i, u2 W
[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-one9 l8 G4 ?( d$ D
let i 3
: M0 D( {8 b' y! R$ w- F$ Blet sum-time 04 b4 A: B% W! g  E: v* \. m  h
while[i < trade-record-one-len]* x) V# L0 k6 ~
[/ @; L: j7 x! e
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
: V( `2 u  |0 Z7 O; rset i
4 j; F5 v) @4 h! `& s8 u: o( i + 1)
2 L5 @- X7 n: j& q; ?- p
]4 J6 [4 r, H( R7 V9 ^* ?2 o% z) N$ t
let credibility-i-j-l 0
+ a/ H" o# o  c: k0 \;;i
评价(jjl的评价)
) u; W; y# c% t6 `- Alet j 3" d7 V2 C  B- a" o
let k 48 j( k) x9 j2 y- b
while[j < trade-record-one-len]; b, s; V& l8 R
[2 n3 b9 n4 ^: F/ l, ~# R
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- H1 e6 J/ [& G$ L; k3 s
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)
% z3 q1 D- V. ?  P6 B- {set j& J" z  _2 V! n- j( X
( j + 1)
5 p( C% B) L8 k. {, G3 h7 s9 ?
]
* u/ \  N3 S9 Jset [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 ))
5 S' n3 x$ n  N! N1 {% W. ?' @7 X% ]1 s" U5 I' G$ W( H7 r
6 {, ^/ F2 X) i2 T$ ~/ B- I! o- T
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))2 e& V' i6 V& d' i2 |1 x0 P
;;
及时更新il的评价质量的评价
7 S: m( h5 Q1 Oset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]/ D% u  ]9 q$ a8 `
set l (l + 1)
) f) s1 _" W& P$ J2 l1 ~]
( ^* M/ u/ n5 ^2 }% a) v* l& p! hend
, I+ `* [; s; ]9 |
- Q1 M3 [# x/ @7 {; G) zto update-credibility-list! Q5 @$ ]% D2 u% ?) E
let i 09 Z% ~3 G4 s3 R
while[i < people]: t- @3 s: ]0 T, ?- U9 y
[
5 z" f4 c9 _" D. K7 m( H" ]- q) \let j 0
% I& F1 l. a: U% Z$ D$ klet note 04 l1 M! O+ g+ c
let k 0. m/ Z+ T* Y$ W/ }
;;
计作出过评价的邻居节点的数目9 {# W6 \) \2 G# I  f) o
while[j < people]* I  {! p6 Q- o* H. @- x: Z$ |, f9 P
[- B( p0 U. r* e. d. C( Y3 q* M
if (item j( [credibility] of turtle (i + 1)) != -1)" \: W4 Q  x: X- N
;;
判断是否给本turtle的评价质量做出过评价的节点
; l! D' j+ a' P& X5 P[set note (note + item j ([credibility]of turtle (i + 1)))  `! ~, y' v% s0 a
;;*(exp (-(people - 2)))/(people - 2))]
" }8 z) \9 r* U# I! r
set k (k + 1)
0 ~5 r$ \4 E% T1 \3 o# j) h]
# l. L5 C+ h; M: q$ C2 V& jset j (j + 1)
& L6 T' O+ Z+ U! P; v8 P]
- g' n# K. c% Xset note (note *(exp (- (1 / k)))/ k)" d2 {, H0 L6 j9 X; ^
set credibility-list (replace-item i credibility-list note)! C) z6 A$ L! A  i3 C8 D7 I
set i (i + 1)
3 |3 Y/ ^# c- z) O& j]
: A- S- Q8 m; L; g# A/ U( \end
! C9 m3 u! a. b, e' l" [9 {& f7 z. ~8 {4 b# ^
to update-global-reputation-list
) e3 K9 x3 `( v5 dlet j 04 L9 o- P3 [0 g0 @
while[j < people]
, N' U: L7 P" O: ~( v1 d  `[
  f  w3 c0 a' k) [" ?$ t  B' Slet new 0
( z4 E2 ?- S! L1 f! l;;
暂存新的一个全局声誉, `* V7 ?- u0 l! ^
let i 0
) R) M4 N& i5 m! U* g" ^- X' N! Y$ Llet sum-money 0% ]; U+ ^1 l) M) ^( D( X3 ^
let credibility-money 0! v+ g  M0 q) b( O
while [i < people]  D  B1 B! e" p& Z8 }
[% X3 H2 ^: s& H5 {: {0 {1 P
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
! x2 y) k% _- Z5 g! Q2 X6 n" {set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
- C5 d" a$ l$ D" z4 x9 g2 H; Qset i (i + 1)! x7 E9 z  \" U, h% B) S
]
. ~& C$ K$ t9 x1 s/ c. olet k 05 t: w/ O+ ~, P0 y4 w% ~! x6 D6 A
let new1 0
9 X: L, r  E5 J% n1 `while [k < people]
) h( B6 A6 k, |, x[) t: f* K* M. q3 K6 e$ t
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)
3 K- r( A$ U+ @& Eset k (k + 1)
5 |! [8 n6 O4 `% |& e8 C/ b3 V]# N3 P* H7 q, J6 g% C
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
# @8 L- o/ e; K# eset global-reputation-list (replace-item j global-reputation-list new)
7 B& C/ [, U9 H' g" Gset j (j + 1)7 }5 c" N, v& j: E# ]
]
) X* I( k' @2 J% }$ C/ m7 ]+ tend$ z7 N4 W3 D# g& x0 s
1 X# H1 T5 x* g

- T% A- P4 X& a# G
& C; _2 v  N5 ]! s* Vto get-color
9 P1 H4 j* C( }" s
; T3 O, u6 |% R; ~% K2 _set color blue
  n- C+ m9 f; a& d$ ~' I3 G. l
end! m8 u% D" [' W1 `. \/ F  v

+ k/ A7 _# Q$ M3 v4 U  Gto poll-class
; V1 J, Q0 I! O3 W% send/ W$ m" U: |2 R8 E/ N
* O& `) I1 p% K
to setup-plot1* f( ]! ]2 T8 S: N

8 e- @0 l- z! V3 v3 Jset-current-plot "Trends-of-Local-reputation"

% y4 i: F! H: J; i+ y$ X* w, S* A4 z! A0 Y/ c/ e. B7 p
set-plot-x-range 0 xmax

1 U; w9 x* x6 i9 o9 l- G6 ]! _4 E% j' B2 M- B& F
set-plot-y-range 0.0 ymax

( B: W2 N: ]( I* Dend) s2 ]8 ~8 c0 Y6 Z7 k2 C$ R0 m5 R

5 c3 |3 Y- i. g! V( B# ?4 _- sto setup-plot2
& ]2 t% b6 s. N
$ ^" Y& ]" ^* n/ U; bset-current-plot "Trends-of-global-reputation"

( T+ s; x& R2 G, u) x( f
0 K( A3 N# p# U  ]' g$ V) R5 Y) sset-plot-x-range 0 xmax
* W/ n1 p: b$ C( P
4 [& y$ J6 _3 }  X  e
set-plot-y-range 0.0 ymax

# \) D  G% [/ ]9 F" V; C1 hend6 D& Z8 S) s) S2 K
: L# {: |; i7 _
to setup-plot3) |( ?) k, H# D% F8 C) {
4 E0 L8 X8 J- |' H
set-current-plot "Trends-of-credibility"
' P6 B4 x  _' E8 m9 C1 N

& Q+ o1 g0 o+ h$ ^  Q# E6 h: oset-plot-x-range 0 xmax
) q5 q" j$ T* P# t/ ~
! s3 T1 e9 O* y3 v/ ?* K' W
set-plot-y-range 0.0 ymax
7 j% n7 }" X" ]; l7 t2 \, ]: h
end% N3 r+ z5 [4 l! Y

& x" v; v# l1 ^- x3 }$ ito do-plots
* Y7 h7 ^- S1 b% Kset-current-plot "Trends-of-Local-reputation"( G0 C  u$ t8 D( y+ h
set-current-plot-pen "Honest service"( V! m0 _# A, y0 X( F3 m1 F
end
2 w) A* F" `9 `! U+ a2 g% y) d9 C. d( F
[ 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.
" z) B. `) h- L( c
0 z0 A7 c% i, \1 x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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