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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:
% o& P$ W* A: \8 ?# P. nto do-business
! Z6 E0 n# T7 R1 x rt random 360
6 l4 Q% Z& g( Q0 B9 _4 e0 x9 ~ fd 1
- I$ ]& R* {0 L ifelse(other turtles-here != nobody)[; y; }8 I7 G- h+ `2 n- f5 r7 E( B/ }
   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.) S. T& g6 v* r0 V, L
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ) K+ i/ B% Q% d+ v
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer& Z4 w. H1 M& }& J% a# D0 _( c
   set [trade-record-one-len] of self length [trade-record-one] of self! F5 P$ h% H/ T; N' P7 d
   set trade-record-current( list (timer) (random money-upper-limit))
8 C: I9 M4 B0 j- |3 F5 H0 A' g2 Y( L
( A: K. ^4 d# m! T# ^8 {问题的提示如下:- I4 D! K( B; ^
% j$ J( c/ H6 x7 r
error while turtle 50 running OF in procedure DO-BUSINESS: c; w- {! c) J; W
  called by procedure GO
/ L5 q8 k! l; V* J7 l- ?& ^OF expected input to be a turtle agentset or turtle but got NOBODY instead.
2 f7 L. I* M3 I4 J, i# i
(halted running of go)9 X' \5 n3 ~. D
  X6 G% e$ ]6 ^2 L% Z7 i
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~~! B7 c& @! K8 v. `: 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* W0 K4 {( k1 G  j
globals[
7 N: u3 S% U$ H  Oxmax* [0 M6 j# ~$ i4 d- g4 P
ymax6 z- n* s( }. u. F
global-reputation-list$ Q+ w2 K+ V0 B$ _2 q! L5 N8 y0 Y

7 e6 i4 B+ Y: k; `;;
每一个turtle的全局声誉都存在此LIST9 s2 B5 Y2 q! E6 V$ a
credibility-list
, \+ L  g' ?% G;;
每一个turtle的评价可信度: r) @& z$ e, {. B+ l! e8 ]
honest-service7 _+ R. `1 l) l! n* q; ]* _
unhonest-service1 v0 s2 j4 s  g/ O
oscillation
. Q8 H8 V# J1 p5 }5 f) [6 `rand-dynamic
6 Q" e" A* P% ~9 \5 w6 o]0 t) S: L, b6 E0 A
2 w& O8 j# c' S/ ~" J& S  V
turtles-own[9 i  }6 y0 [3 M% r) R$ t! h1 y
trade-record-all
7 B3 `2 C/ p! x, U+ T;;a list of lists,
trade-record-one组成" Z' ?" u1 F  k- {
trade-record-one
  p+ c8 n' J, t* E. u  v;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
4 j' i* U  `6 n* [+ R
$ ]( N" i" q; Y( S; C/ X;;[
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]]3 M0 C. S% \4 F9 U2 @1 V% t
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" S% W# j. b' R, `' [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
7 \$ g8 a% D6 v" d0 K4 J5 Xneighbor-total5 w. p' ]* f; v5 ~0 }: S! K% c8 h7 R+ S
;;
记录该turtle的邻居节点的数目  D9 {2 Y, j. H, |
trade-time5 o7 O, G# N, C! ?; E
;;
当前发生交易的turtle的交易时间
0 v2 B6 [2 H! O. |appraise-give& j9 Q3 V( A9 q: x  a
;;
当前发生交易时给出的评价. l2 k9 [. L8 V. }, K5 n- F
appraise-receive
: P3 ^. J8 I' P/ N9 c- r;;
当前发生交易时收到的评价# Z' S+ m3 D4 C( o  O4 m
appraise-time
1 G5 f$ X1 Q9 X  b' ^, v9 H5 c, |;;
当前发生交易时的评价时间
: ?9 C2 m9 P, Z! tlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
8 R( {5 U, Z2 ]) l; ~trade-times-total; ]% R$ M- H" L
;;
与当前turtle的交易总次数# t! D" o% ^- L2 k
trade-money-total. c$ {& n0 e# q0 D, T
;;
与当前turtle的交易总金额
4 ]6 h+ j9 ?7 E' Nlocal-reputation
( e% N* O2 X1 B% yglobal-reputation
0 p+ f' t" g; Q* S& _3 {credibility0 p; G- K. f, a2 M5 s
;;
评价可信度,每次交易后都需要更新
% G& c! q+ {% p# T# ]8 I# Icredibility-all
) ?3 a6 {3 P, p8 U! w! j. R) x* J- u& |;;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. G5 u7 F+ T1 J7 e

* {( K5 g7 K8 J! C4 D;;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/ e) i- E! O4 m( J3 g3 B
credibility-one3 U+ [4 n$ a1 Z( Z# e9 x" j+ \
;;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
+ `- v/ |" Z  V' q# t$ c- x/ O! |1 Gglobal-proportion1 |" l9 o- k! B* D2 j) @
customer
% `! s$ m( z' z$ b& Y  M' Lcustomer-no
: g( l2 m( M" Btrust-ok
/ S5 N! [0 q- v9 j( ktrade-record-one-len;;trade-record-one的长度
3 W) J, k% U+ a) ?3 |" b], Q. d; @* S8 L7 O7 l
% s2 w8 p/ Z$ W, l. d2 s$ z
;;setup procedure/ B3 ?; b5 M% u- t" Z% U8 f, k3 J
6 t% P9 W7 a8 Q1 x& o* n( F2 ]# D
to setup
' ?2 R7 p0 L6 X$ s& y1 O$ |# E* N9 i' F% M, n7 c5 N5 }
ca

# W; J6 ]6 a, q& {% R$ b. J4 G( }) i1 N6 z% L6 k; r* Z
initialize-settings
/ O3 s4 {& n# x$ ~- n

$ x  @! G+ A) w" U, ncrt people [setup-turtles]
/ H9 V' |5 {' {  F

1 r7 a5 x) g  `, rreset-timer

! S' P3 b# u5 |) ?4 g0 Z* E" _; C  _' K: c3 f
poll-class
- l, A  M( x: J1 z- u
0 m- [- A) ^9 y3 a$ a
setup-plots

, ]+ E! U( H! K; Q0 B$ }6 t$ e1 h% s' C6 _$ Y0 e
do-plots
5 }& o' I- O/ S0 ?  n
end5 \" D7 o) f1 f9 q4 C# ^% a$ y

  p) J4 }- e" I# R9 vto initialize-settings& _: y' M, U" @; Y, {

: v$ ^% [& m" a3 \1 vset global-reputation-list []
/ W! I1 P: N0 {! v" I5 z! m& o- V

# K1 m# V" s, _9 l6 H0 G7 G( xset credibility-list n-values people [0.5]
2 S( t$ p. `& f- e1 {0 L, {& I

7 ]! D$ O1 a& Q/ p! lset honest-service 0
, K4 ~& p3 h5 C0 w3 i

5 H! D: u7 ^7 Z& k- |4 eset unhonest-service 0
1 l( G  U0 w2 U+ q. c

* e' U& W/ x6 t0 C& Z# N  v8 `& e) wset oscillation 0

6 ~4 l' u# n) m8 Q1 M$ S+ X8 ]+ t: S8 S) k
set rand-dynamic 0

, y/ E4 P% t* \& Y. h& `# @end
/ a9 B/ `% a' H1 f7 A& G2 ?
. m) s8 A* V( O: u9 H  y- F* Hto setup-turtles # u" B3 p: K5 T. z4 [! I
set shape "person"
' I% s3 Z# U% G# D2 r2 Wsetxy random-xcor random-ycor/ ~6 {' H, C: X
set trade-record-one []
! `7 e$ s" k5 b! a+ d- U' k2 ?

  P; X" v' B0 F! Jset trade-record-all n-values people [(list (? + 1) 0 0)]
5 v' k2 i% U/ ~& i. s2 b

" k* ]1 c8 d. ^+ p: i$ u+ V" i9 Qset trade-record-current []
  v. n( L7 ^* N( J" H% Eset credibility-receive []
# {/ J# S& ]2 d0 w# G- ?set local-reputation 0.5$ d/ \2 W; t: J; G
set neighbor-total 0
* a; \( s  [4 Nset trade-times-total 07 X, W, @9 @) p0 Q9 p
set trade-money-total 0
0 X0 Z& o  \/ c$ N4 L) c3 M! pset customer nobody0 Q  Y0 z7 W/ b/ r  _1 O8 N/ F% j
set credibility-all n-values people [creat-credibility]5 E% _$ S( U1 |2 k( M% N, o! P& |
set credibility n-values people [-1]% J5 \5 }; Y; q
get-color
) @* [8 ?# `' j, [1 {) d

1 B4 c- {# `$ _  E5 i1 h9 Oend; l, E' ~) s5 @; b* Z: e

& _9 Y( Y* v7 R5 y# r$ N5 \, _to-report creat-credibility' p) S) f( q' U5 q$ n5 o) [6 ~& c
report n-values people [0.5]
+ W4 @8 y4 U/ dend$ `3 u8 u9 f0 ^9 A  d7 B6 S
2 p' Y+ C. C7 c6 k9 `
to setup-plots
! f. Y$ T* g7 }. ~* D& M* ^( u; j4 W
set xmax 30

1 ?% h; P  J0 O# l0 e( ~/ m! D3 V0 \" F" N$ O
set ymax 1.0
: t# j/ e1 e- L# y. e

, f1 S8 W" j5 _. c" E! Vclear-all-plots

$ G# b) S" H. u
, |$ f) A( r& X7 x! o  q  lsetup-plot1
* i  b7 _9 @. U9 E

6 r0 O; o6 Y2 k4 R: u3 xsetup-plot2

) f4 ^& f' u) {4 R7 Y4 K- n
& @( D! H3 i0 R3 V8 i5 xsetup-plot3
! E+ T# e- J0 e8 M  m6 E
end
: S; G; @" W, c7 v/ Q# n+ g
8 n- z! c8 b0 K, g; u( N$ w  ];;run time procedures
' {9 x. @0 w; f$ m8 j" U# m
1 T' N, |# N, t$ Z6 oto go7 Z7 h1 w: F# D) _5 u/ C+ Q- n

! T1 Z$ R! B* R* D3 s# p: L  F+ c  iask turtles [do-business]

0 B, J% q4 v. x. x6 o4 Uend4 F9 Z' Z2 `7 Y; u- K3 X

' }6 V7 X  b" @# a3 T3 [& Cto do-business
- T: k; Q/ c* z& `1 E4 g
; A' y* w& G* s
3 p7 f. Y# W  r* q- H
rt random 360
8 e( @1 N+ k. Z3 q' _
* W$ ]: q) S9 H3 t& j' d7 N0 s( A
fd 1
) t$ q. N$ P- Q3 [- [/ ]
6 M$ e1 h' Z) I- I& M( t! T, T
ifelse(other turtles-here != nobody)[

" U* `; ?/ o% m& p" w+ c# m( l. o/ v- G! r- p* ]7 c  z4 u
set customer one-of other turtles-here

  s& \5 K! v9 z4 [" B8 o
6 X* G: U  U& P5 Z) z;; set [customer] of customer myself
* W& e9 M! w# V* h$ b
) b- P% k" m' a  E( Z
set [trade-record-one] of self item (([who] of customer) - 1)
$ `4 X8 \" \" |[trade-record-all]of self
* w& b$ I! l/ P6 F) d1 {;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
# x& K, I6 K7 p. Z" m7 g, r

' O  U- V7 h, \! e* Qset [trade-record-one] of customer item (([who] of self) - 1)* @: ^, ^4 K% G: w! [- ~0 t8 G/ q
[trade-record-all]of customer
7 ~3 l% }' V% [4 s* A9 I1 }

5 @& J  Z, ~& {+ Z" {. }8 Hset [trade-record-one-len] of self length [trade-record-one] of self

' B: \7 z& R( x; o. ~- e2 T7 B. X: m- |. \
set trade-record-current( list (timer) (random money-upper-limit))

" t' W; h( f- j$ O  B0 |! H* z/ s: d, Z: y/ g) `& h
ask self [do-trust]  U. z0 L* A5 f. f
;;
先求ij的信任度1 Q! O: {: h+ Z# t. l3 k8 p

; U0 J" I% R9 J- uif ([trust-ok] of self)
! `  M: |, R- s) \9 |;;
根据ij的信任度来决定是否与j进行交易[
4 n4 \$ j9 C' @4 K+ Q3 T8 `ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself6 s) L2 N% I( R1 _. M/ I' ]) R1 h4 m
! q1 _6 n4 I) t
[
* a  M8 d  J2 y- S  G0 t

& J+ H' @( G7 B# x- z+ Rdo-trade
, P- L# d/ c: c, P/ p$ ?6 M. K8 g2 l1 z

1 p1 H6 Q/ j! N& ]1 @  oupdate-credibility-ijl
' {: H2 d4 q, a) ]$ u

# p" u3 S: G& Fupdate-credibility-list. w% _& O' j3 r3 S6 p* G
; C3 ], j, F  c3 F
. N! F( T0 u# S' A; W. l4 z% Q
update-global-reputation-list
. W7 J) q8 a8 S4 M
5 G! ]6 ]2 {+ N. m5 K  e4 j
poll-class
) S; U4 Y7 k; o7 Q1 d, g

* f4 Z0 T5 B! o8 D0 oget-color

1 G7 m# E3 ~4 t9 A) |5 i
  J' Q) |; h7 L, a3 a]]
9 C0 K6 a# t# ]* }. E. k4 o$ @& g; W8 E, o) M' L6 w
;;
如果所得的信任度满足条件,则进行交易
- k# R& K6 d+ l% V1 g
$ V' l' {* n. ~( v7 t  l5 _2 ~[
& [9 `- c% j2 i
; Q7 i: W$ E1 @! l! ~# Z0 G
rt random 360
: P' V( N: p' h2 f' @1 G

. N% Y' y7 Y" _+ tfd 1
, I5 k) J/ w  E, r3 F. G- c
( h' E( B- [! s
]

2 c+ T, q+ G  ?! v" o5 \6 n; y* U: Z# F. Z
end

+ G' k$ f/ L! E5 D7 E" H: [/ |  b9 Y. ]0 ~. p0 Y$ K5 U
to do-trust
5 _  ~$ Y* s6 @* Qset trust-ok False% q4 M# u; z, |5 ?- F0 ^

* d1 i, @. w7 J3 a( r% m
5 a4 Z+ ]/ n, }2 b. i% h1 S, z
let max-trade-times 03 N+ ]. }# b0 J, n0 d
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]- B6 q8 A# e" E0 I  f/ \
let max-trade-money 0& S0 w: K5 t8 K
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
4 H8 a8 K/ M% ~8 \3 W4 Alet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
9 I0 X7 l2 m# ^' O1 O2 C* F& i
8 o# n0 p0 R* Y/ W: K
& m# {0 b) e/ U
get-global-proportion
% L% I' V$ d+ e" f+ {9 ilet trust-value
. z- e" y" z, e0 Q& Nlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
! f: I: E8 Z: p1 i" f9 f) q7 k
if(trust-value > trade-trust-value)
- u& _  d- m/ L% M[set trust-ok true]! Q* `3 D$ L. T6 H- t+ A' a9 M$ Z
end* \1 t) x, y1 C$ z" `# w& z! W" n* A
5 n6 s  f1 M0 q, b# ?! I
to get-global-proportion
5 I$ \# y5 W- V; Pifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3). Y8 D. A) t8 z
[set global-proportion 0]  n% n$ `3 y3 h7 `, _4 Q
[let i 0. b7 e3 }0 h' C% S
let sum-money 0
; g! P6 j! a  y+ L$ Lwhile[ i < people]
$ ^" D3 w$ c% e[
- B9 S* ~3 c& n) D7 d' f( E& gif( length (item i! T& g8 O  t# k& u4 g" Y/ U* T; c/ u
[trade-record-all] of customer) > 3 )
; v) k2 {% j  z$ S) k4 f9 n
[
: o4 p8 t  E+ X* cset sum-money (sum-money + item 2(item i [trade-record-all] of myself))% m4 T2 p3 S8 X6 B8 \
]
. ~8 m' X& f2 ?) k]+ a6 B7 H- |0 J) x) K
let j 0
$ B8 S! I2 v( ~/ ^7 J6 `% v$ ]let note 0
  n: }8 }  N- O; s3 _8 |8 \while[ j < people]; I% ~6 s( V, T' x, o/ k: t2 v0 v
[0 g2 ?/ `7 ?% |5 j; V4 C0 {
if( length (item i
1 L$ w; t  X. x[trade-record-all] of customer) > 3 )

4 Z; E3 m9 c/ r[" k# R2 J  W7 Y4 d! D2 Q4 D
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
. J* Y( x8 ]# l$ q[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]2 S$ P% W) @8 `- p
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]& @' [5 K! }: _& h7 \  D; W6 b( P: W
]0 q* H7 s4 y% p8 c
]
$ Z' P4 b. E7 Cset global-proportion note" S2 [$ t$ `! \7 p1 L, X' m5 P
]4 F9 [2 C( {& T7 `& @* L
end0 G6 F. a1 a8 y2 d; Y
# {/ y' U$ }# t, G2 ~
to do-trade
. J( s  |: H5 Y# I# f;;
这个过程实际上是给双方作出评价的过程
: x5 n0 i7 X6 B8 D+ Fset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价" }# N# e+ }0 o' a; r
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价; [1 O4 m8 [& ?) ~3 i5 {+ ~
set trade-record-current lput(timer) trade-record-current# _- k3 X9 ?/ v3 M+ W( Z
;;
评价时间4 I, J9 T1 E9 S* h3 E& ^8 @$ j
ask myself [( |1 a7 n* Q! p' a8 U
update-local-reputation
7 e* W1 ]# e- W- T- ~. E$ a9 Hset trade-record-current lput([local-reputation] of myself) trade-record-current
. e4 ]+ `. S& v/ v" L0 j]
3 Q. p% g# C& Q; Z! Mset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself# w! h5 l; \. t
;;
将此次交易的记录加入到trade-record-one
# W/ X1 U/ U! D( r2 b4 Aset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself): ^4 m- q5 q" x, ^  z
let note (item 2 trade-record-current )
* [* a) \$ U7 p0 n. f- C$ m! c) \5 Kset trade-record-current
1 s! r& V/ H( Z3 E, }  j(replace-item 2 trade-record-current (item 3 trade-record-current))

5 R2 j: E% ?0 P& j- o  ?4 y3 sset trade-record-current
7 J4 ~3 a- x. `& B# R3 [: ~4 m(replace-item 3 trade-record-current note)9 }3 i5 Y: v. y4 S
" [1 I% G  n/ ~

& ^( P* l) y% W( J9 }: a, U1 U- x, ^ask customer [
3 W, V6 P3 m- X- C6 I9 Y& e$ Z6 eupdate-local-reputation
! _5 X8 g$ [0 n9 J4 s7 u8 `! `6 _set trade-record-current, S9 l6 T/ ?9 V$ S5 O( F
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
- T  v5 r3 z, g& z$ P. d: W
]% a  v6 S7 |# p' ~2 @' S0 \

- s1 N4 @' o0 Q. ]# ^

/ V0 _% n1 X3 K( Q( R) {1 Q/ \set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer+ s8 D1 w0 X% W. }4 i5 D; R

+ }9 |8 O) l& M: U1 N% N8 L; B; i! C  Tset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
( J  }, r; V5 u* G, u  w1 k;;
将此次交易的记录加入到customertrade-record-all, w, i! |8 z* o( {) S& g8 L
end
# L+ W) f7 V% x& e' Y
, V, h6 I; i/ _; [$ Yto update-local-reputation0 \0 ]. n. M1 c# }* F* B" `
set [trade-record-one-len] of myself length [trade-record-one] of myself' s& d/ t1 k0 u* y

  m" z  D3 n# x# p) y# P$ L" m5 ~% ?) u$ n$ f) ^% v' ]# J8 ^5 c
;;if [trade-record-one-len] of myself > 3

- v# T' y5 ?3 rupdate-neighbor-total
9 |$ p2 P( d4 M* q$ R;;
更新邻居节点的数目,在此进行2 d* [+ W3 \4 M* `; U  |
let i 3" q( q5 a: T# S- j# ?
let sum-time 04 n* B) _1 K: ^+ `
while[i < [trade-record-one-len] of myself]  j# q/ P, P! q0 h+ c
[; b$ o! A, G& G8 T3 {9 e
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ). R( x: U" V& k' |$ U* E
set i
% O' c& T% r9 f5 _, s2 {# J7 S0 T# `( i + 1)

* K$ U) M- B5 {]6 u' d3 H0 @3 A/ F" H( n& m/ |* M
let j 3
- f' A1 h+ e( }7 vlet sum-money 0( N2 V6 T" h8 R" a
while[j < [trade-record-one-len] of myself]7 X  |" Q9 `* i% N1 M! ^. A
[4 `" k: I3 k$ S+ L  s
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)
- c3 G9 M% J& a4 }set j
$ O! B- H: k* m2 L( j + 1)

$ z- B  N, ~# ~3 f& x. k, k]
. y8 {# V: r. S; f1 e# U' mlet k 3
2 e8 b  a( _7 I8 xlet power 0/ Q- Z- W" x4 }, B+ Y
let local 0
" H& u- ]# {) Iwhile [k <[trade-record-one-len] of myself]+ `+ I# l5 r- C: ?
[& n$ _, D: j- r% C. \; `/ x* ]! M
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) & H7 R& G3 @' ~) q# p  [: X' p
set k (k + 1), J4 E$ ]1 J/ R( I0 M3 A0 y" E
]( {! k0 M1 C* s; Z/ ^! N2 h
set [local-reputation] of myself (local)4 z5 z2 e; j! `9 }
end
1 m% a, w2 |  X; w6 v& ^
4 u* T% d  n5 f  Oto update-neighbor-total
& C, u4 Y  O# f# O: Z% c$ l# g( T2 e
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
' l& I2 z/ z. c+ \  C  @
3 J  u4 N% ~8 u* F) Z. z; {8 e
* Z1 t+ e% E3 i1 N- r) I3 e* [
end2 U; X/ b2 N4 }$ s6 L1 u1 l
6 i0 Q# r: _# @% G+ D
to update-credibility-ijl , x8 q0 {* x) }; G+ K
: T& P. }+ G; e8 ^
;;
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。
: V& `1 Y, G# e; dlet l 0
4 O1 i1 \  k  }+ B$ Wwhile[ l < people ]8 {& ?( n) {$ I, `9 T" T# 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
0 v, c6 R' G$ r[- u& b4 T; j- D  p3 h  |- @
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
" K; k4 s, [  Jif (trade-record-one-j-l-len > 3)
# C2 u9 e2 d, y" j, k$ t+ 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-one
" e  S" u. `- d! W3 ^5 _let i 3
% N, e$ O; r4 N) U. \8 W8 f* glet sum-time 0$ W0 {' d* F/ v3 I6 D1 t6 c
while[i < trade-record-one-len]' w& h  S! G" W1 a7 u
[2 J* p4 w6 c7 J+ r/ _+ f
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
2 W$ D% t. J0 m2 A3 tset i
- ]0 R1 D7 L" ~& b  d" I( i + 1)
* m+ a" x3 U& f. ]7 i
]
: `; h3 E# J( b9 clet credibility-i-j-l 0
! G4 N7 c8 n+ ~  `! d: N$ k+ |;;i
评价(jjl的评价)3 s. R* K6 g- O* i! x
let j 3; A: `' h4 f8 g# q1 Z2 n1 n, K7 Y
let k 4. j: V4 V9 d) w: X) ]  ~; R9 u( D- q
while[j < trade-record-one-len]* ^& M! t, J; D3 l  z' s& Y
[
( j: O0 K2 t. `3 M+ awhile [((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
4 e) V0 S) B7 F7 ^  v# 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)
+ m. T6 c: x3 A, B/ n: E6 fset j
; o9 g' a! I5 G- Y5 D) I( j + 1)

. n# s+ R; h( L2 H3 W]% k9 ~- s9 D" \! e# O8 v$ B+ ^
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 )): }4 E  o" Y/ {& y* \5 E1 D

% V$ v- z0 }+ ~8 M2 ?1 O8 f* G

5 b7 I/ F* p( N; H, _8 }! {  qlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
/ V& N8 I4 Q2 U% [- m1 y;;
及时更新il的评价质量的评价% Y" e: A* K2 q/ C8 D
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]: q9 l1 b/ m. T+ @9 {+ Y
set l (l + 1)
7 ]4 Q2 H! f3 ~/ [- ?8 A$ F; f1 F3 a: U]
* o! J0 W4 g2 m& E' c& `' h4 Wend
- s! Z4 N" P) k$ I2 @5 a
( d" ~6 ?: p# o' _  C  ~+ I3 L, dto update-credibility-list  n1 r2 W& O: k1 O( \# ~/ G
let i 0
% V0 E0 c7 L3 u  X+ s  [7 Zwhile[i < people]/ v1 L- G% o0 M* G% R3 j+ o
[% T2 r8 A8 {" E0 I" ^
let j 09 W2 c1 J( Y. u1 e- c1 F
let note 06 w" c" F/ ~; }& h8 `& z
let k 05 [+ B& s2 t3 W1 L) }
;;
计作出过评价的邻居节点的数目( b3 }" }4 @5 ?- r, S' v
while[j < people]
. w1 t; L3 V4 r) n+ ^# N( N[
2 ]- I" ^$ u" M% @4 _9 u5 rif (item j( [credibility] of turtle (i + 1)) != -1)" L( o' p+ Z9 ^; Y/ g  l% a( `' S
;;
判断是否给本turtle的评价质量做出过评价的节点" P! |( i3 v2 D) U2 W, X, ~$ Q
[set note (note + item j ([credibility]of turtle (i + 1)))2 ~' v) [/ P8 S8 p% B2 W
;;*(exp (-(people - 2)))/(people - 2))]
' C2 q/ l2 j1 R. @* e
set k (k + 1)
9 F& f0 I: k& c% c3 ?]( J* k+ C# C- G
set j (j + 1)8 f1 `  G" w0 o# J6 M) ~/ F8 y
]
9 C/ y7 }8 [; jset note (note *(exp (- (1 / k)))/ k)* v& T5 o& ]. F- ^
set credibility-list (replace-item i credibility-list note)
* d" a' L: `- Mset i (i + 1)
6 [% e( X4 e4 }% A0 R- I  x]3 l! V# d, I) s. R) u; ?
end
( h9 C0 M6 }( P) w& a+ l1 L0 A3 V( @' f( Q5 s/ T: Z
to update-global-reputation-list9 ?! K; U5 e# }0 N2 _
let j 0" Q% P* U0 o# Y, C
while[j < people]
( r" p% \7 T3 {3 f: t[
; n4 O  r" W' w. t2 Klet new 0( Z, ]4 S8 J9 A2 `
;;
暂存新的一个全局声誉% |! _2 Z3 `, y  {, n
let i 0' E; ]6 J0 C* v- O$ C! C( P
let sum-money 0, N! I5 J4 t: a0 d" u
let credibility-money 0: w0 [& V6 p7 V4 u7 U
while [i < people]
0 h# T# s7 s6 U9 @: Y[
* z+ J: v4 ?: I3 Jset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))1 q: d8 `$ ^+ i$ j5 r3 ?
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
. O3 j9 r7 K7 j7 [; N( lset i (i + 1)3 X. d. ^. p, @& f4 {: j) S% ?  [
]- j# ~  e2 Q! w8 u2 Z: }3 {
let k 0
5 i( W0 I: J; O7 f9 S3 Flet new1 0( K) D" Y5 C5 J, z7 S
while [k < people]
9 s& R0 ]/ g! X0 ]! r[
. b9 Z: G* V3 R4 o' p$ s) H* V% Fset 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)
& t  a: b6 {5 s4 x3 U% wset k (k + 1)
- E, \/ a% |' |1 X]* J' F& l. D" A0 D: B8 O
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) * P* v5 _* x+ N3 `- M7 m2 C
set global-reputation-list (replace-item j global-reputation-list new)
+ J& E% Q: `6 N3 ]set j (j + 1)
% S3 C& U2 b; ]7 Y8 E]
8 S1 s/ Y7 z; F1 q% Y6 Iend
2 @: X4 w, i% l& q% N$ Z& A0 E" u! E4 a/ b$ S  z
: F0 W/ V) P( h$ \3 f5 M6 }

& _2 ^$ K9 a, E! }- S( k* A/ _to get-color
' @) m& N4 @; Q7 f% W  H
" i/ V& {( f" d  N! k- Zset color blue
. r: u# V+ |! X- [5 L. |% y; K7 C
end! z- g" F9 r( ~
, ~9 S* c" ]2 K( A
to poll-class
2 w1 ]8 u4 J8 Rend6 `: a; E1 a4 K. ?+ C! A) `" v6 q

: K' A; O5 D, |  Qto setup-plot1
0 I) t) D) |! K. @8 q1 k! K% b* R* W1 U3 U+ q. {: U, f
set-current-plot "Trends-of-Local-reputation"

0 v" R: G% w$ N0 v
* v& |$ P4 m1 bset-plot-x-range 0 xmax

6 b$ L: s! Y. }/ `& G8 i
) |3 V0 q. b* k3 m* Vset-plot-y-range 0.0 ymax

' D0 \, Y, [5 X2 mend% k+ S, o' p) ~7 Y9 d4 ~$ L% ?

+ @8 k( m  Y1 E5 ?. X! B* Fto setup-plot2
- _0 i" S2 x- t
* V3 c! V4 D; v& h" A, I: Z& rset-current-plot "Trends-of-global-reputation"
' q3 ~7 x  h6 t) y3 @

) c0 t8 A; |( C8 m, e, n- z& J. rset-plot-x-range 0 xmax

  }/ j; u( o* r; b" |
% f; [, w* U  {5 Xset-plot-y-range 0.0 ymax
) J1 g  F5 C; v- C- y
end; @0 s) r/ K5 y+ u& X" M7 F1 M

0 b' U7 |2 y' U1 p; ^to setup-plot3, D$ u0 Z; t1 Y% A

9 C8 |* v% \4 Q7 @1 Yset-current-plot "Trends-of-credibility"

% H( M* l" \6 a* a5 m
! L1 o2 q# b2 ]- ^5 s4 Hset-plot-x-range 0 xmax
$ G4 o3 i) P$ [" s3 q
) l4 L3 |" \5 M0 k, v3 K
set-plot-y-range 0.0 ymax
: O$ Q6 l9 R* Z$ }7 d2 ?4 S
end
- Y% f) S3 l! F; W. @  y
4 l5 A& i4 Q; N) d4 ^( x2 pto do-plots
" z$ p. b) J& d. H/ w3 Jset-current-plot "Trends-of-Local-reputation"
! |8 H8 s9 y" l- Z/ tset-current-plot-pen "Honest service"
: u( A$ u1 g: }: bend% D4 r, d, n: M3 m9 `
" @- g9 C  t* j) N/ [9 l
[ 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.
" V7 o5 w) F' R/ |- o3 T3 x( S& C6 P9 T  f6 t
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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