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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+ _" R% N8 l& q5 ^# @* {/ ?1 U
to do-business " f. E4 h5 |( L  z  r# c- x  ~
rt random 360
8 t. h! ~2 W. n( M6 K fd 1
! ]2 m( k: `" r: { ifelse(other turtles-here != nobody)[" \. y1 J+ f" k9 j9 T+ \
   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.4 l: }" U8 [- f6 i* t% }7 u
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    % }. Q3 I# O4 Y1 k
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer2 e+ U# b3 e! J( q
   set [trade-record-one-len] of self length [trade-record-one] of self
3 p: ^9 U4 v# ^" Q5 b5 v   set trade-record-current( list (timer) (random money-upper-limit))! |, Z  Z# [; Y2 v% f- `
* S2 M0 M, p9 g% j" c9 |: V' l- N
问题的提示如下:* r" K5 _# A$ k/ ^

" L4 A! D, ^3 G3 j+ Merror while turtle 50 running OF in procedure DO-BUSINESS4 k5 H' f" C' D! R
  called by procedure GO1 T1 y5 o. {; ]4 t' m' f, `% ]" W
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
# V9 Y0 o  \, C2 h. u6 p$ c
(halted running of go). ?; _& ?5 U. r2 w

. v9 C- p* U* B0 A+ h- [& w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~~
% T! e2 n; A4 o  K2 v/ \6 y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7 B9 l+ o" P1 ?& I) S
globals[
) Q7 ?/ m3 C4 t1 @5 t2 Q* Ixmax7 n- b! z1 e1 t) c
ymax
7 W# T- D' [% T6 yglobal-reputation-list- s, l2 ?* {' k- q
0 o7 l4 E+ D/ e" k6 }- T6 F
;;
每一个turtle的全局声誉都存在此LIST" H; K8 A  v6 B' L0 f9 ]
credibility-list
; o1 H# A7 {7 E% b! i, z1 z;;
每一个turtle的评价可信度' I: T0 e! w- Z
honest-service
8 P: H3 N  `/ F" Aunhonest-service& j2 i, D9 E9 `2 l3 `
oscillation
  d, u6 A! w) t* T0 O( d4 @7 q+ L9 jrand-dynamic9 V4 S6 g9 z2 J; |9 y8 r
]
! E8 g( D# v  h( G, ?3 m! v
* c9 q& S: U# n) K" o2 {" f# ?turtles-own[
% s2 @6 V4 ]0 q5 Htrade-record-all
1 k- F8 n! \6 @, a) `3 H  Y;;a list of lists,
trade-record-one组成6 J6 E0 h8 T7 Y9 U8 A9 M
trade-record-one
5 t( u  h" {$ T; Z5 \; Q;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
, D0 x/ v* d% I3 a" T* w
7 ^  J+ i5 V& v, i1 c3 @& o. O;;[
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]]
/ c5 o5 i( G: I* {" ?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]) k7 v7 E8 p% z: d! `' A& l
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& |+ }1 w& g* ?/ z* x
neighbor-total2 D6 l' ~  p& M6 N# R2 n0 R
;;
记录该turtle的邻居节点的数目
/ M% H8 g6 g' Y9 n5 J+ Gtrade-time3 p7 [) b, u8 S* ?5 a
;;
当前发生交易的turtle的交易时间9 i& s2 F2 M2 c4 j
appraise-give
1 d- K  R! e* a) B, p;;
当前发生交易时给出的评价% R' [" o: y6 D( {9 _  Y5 `
appraise-receive2 C; X4 D# J+ g! ^# U# V/ e
;;
当前发生交易时收到的评价1 k+ P3 b% T5 c0 D3 W% |
appraise-time  i6 s$ p0 W4 y7 m( _# P
;;
当前发生交易时的评价时间
+ ~; @5 @9 Q& e/ Zlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉' i, m2 C5 ~$ H; f4 E. @6 E# _
trade-times-total
. m% N* P+ s) f1 Q- p, r;;
与当前turtle的交易总次数7 R  }2 ^9 c6 Z" J$ ?
trade-money-total
  A5 S0 ]2 b: Z+ F;;
与当前turtle的交易总金额
8 O' n9 V1 G8 R. n$ qlocal-reputation* Z. p0 s( P1 I% \$ F. a0 z! X- ]
global-reputation
- x$ v8 Y3 x) a5 E* {8 Mcredibility
! V" P/ M2 `' k$ Z;;
评价可信度,每次交易后都需要更新& @: P0 f& \% {+ ?% ?8 `
credibility-all4 _% w8 g: e0 T
;;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
' a% [! A# n8 E0 x9 A
- P# R6 T# F% L; S;;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0.51 d  C6 _+ b5 T6 u
credibility-one
) b3 `. j. d+ F  m. n$ Z;;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: e* b. q; U( m5 |7 b2 Z* D
global-proportion5 Y& Q8 _, }* }0 J
customer
0 X' A$ n3 z* H0 [8 wcustomer-no3 T, l9 y- m% `! z
trust-ok4 i( n+ o6 Z  _0 O1 y
trade-record-one-len;;trade-record-one的长度  U" B4 z$ {6 _* j' a
]
  U: \/ [) f. k' Z* L- P, v- J4 }5 B7 v* A7 N- A4 _; S1 Z; m
;;setup procedure
. m  \, |. F: V/ q7 b  d+ A# O5 P( r' q
to setup  B8 f$ j1 k+ T( P9 J% r4 }

0 v% J0 P$ C( y6 W5 C$ g, E2 Nca
" V2 j8 B4 q+ O0 R! E6 y0 i
  Y* W. G- w) h7 p4 Y
initialize-settings

. R& Z( ~- l( _2 }0 z8 Z* T9 R0 n
% U9 D, i4 Q. _- L3 ^# Tcrt people [setup-turtles]

, F& E" {: A- U4 M5 L7 z* l& R2 G+ x$ {" U0 [; l1 \
reset-timer

, L2 m' q% |" K3 j4 d( I. q3 V5 G. n9 O- N& ?9 x
poll-class
" n) i( T: l/ \3 m% J$ Z: h3 W
3 N8 c; L# S: \. T
setup-plots

0 _4 N& w- W# N5 m2 b2 x- o; N
: h$ R. Y1 ?: a/ W9 D- ?do-plots

- b8 u) p7 C! gend; u5 I  y$ G: s) Q5 n! l
$ Z. u  }0 D1 `1 t# v
to initialize-settings
: A8 ^; Z& g6 Y$ x( |% Q7 \. D' D/ |5 U# ?$ p6 _5 ]
set global-reputation-list []
6 o. y! Z; C+ W: i0 W0 S. ^

, _8 s0 Z% z0 G, Bset credibility-list n-values people [0.5]

, F7 ?% b3 L- O/ m- |3 m* e/ S0 F- P
set honest-service 0

1 H8 {# Y) x* I2 v# p7 ?
3 u7 _; e9 i) y# ~) ]* M/ O8 L8 Tset unhonest-service 0

" L! i8 Q+ g6 F( L) |( {
7 o& o$ H: R3 y2 {4 x; R8 O" |3 _set oscillation 0

# U3 @2 _7 z- Y, v  S0 h* L
$ h9 s, ]" [  ~$ S# L" Hset rand-dynamic 0

3 W$ @1 n3 v& r; @6 t4 t0 cend
( @' p  {# E' V) q1 N5 x3 i* ?2 \* `3 _( F% I' e0 f7 Z0 Q
to setup-turtles . V. i. q' {0 \$ C$ B
set shape "person"
' y9 r0 Z+ Y, D0 Isetxy random-xcor random-ycor* u( F& d$ q9 U2 ]& A" k
set trade-record-one []
$ P9 f( I' @' X- e
8 H" J0 c# @6 h$ w9 i
set trade-record-all n-values people [(list (? + 1) 0 0)] $ K6 ^  z  ?: z) j3 ]2 `- v( M, K

* n6 A; @. ^, Q5 fset trade-record-current []2 w# p/ D0 n5 R/ u
set credibility-receive []
) U0 H4 `, N$ f3 Rset local-reputation 0.5
/ k& k( k% O, ~) s7 Iset neighbor-total 0
- O/ h. C# d/ G  B! _set trade-times-total 04 H4 r5 A6 X& h2 L: J
set trade-money-total 0/ o2 d* v3 G$ [( U8 q
set customer nobody  R4 C- p/ l* H. n" }! {
set credibility-all n-values people [creat-credibility]) N2 v7 N6 @: u6 Y3 ?# k
set credibility n-values people [-1]/ D8 `- r' u8 B* e+ }& A. l
get-color# Y# p+ o* _; w

  G6 W, Y, w: Q( y1 V7 Q8 iend; q4 p8 S+ i" C% K7 l
0 M! w+ r2 g5 F2 Q" [9 O: l$ ?
to-report creat-credibility/ i. w; K3 s" d- o! n. m# z5 }
report n-values people [0.5]
3 b0 h. l8 F) F! iend/ E0 [. v2 e3 y
8 ?$ i/ i; ?& c! v- B# G' N
to setup-plots+ S  z7 [* ]0 q  }# x! d
% r/ ~0 |; o( N$ j
set xmax 30
# J, u2 {" ~. K& ]: }4 b/ b
6 z1 o( K# h0 R& V6 L
set ymax 1.0
2 k0 M* S4 Y6 c2 ~+ q5 A

: P9 Q- n* z7 |+ f+ _2 q4 r  @clear-all-plots
0 g" b+ X) J8 G0 k# k
$ J# \: R. y3 h: K, ]1 m
setup-plot1
' M% d. v, Z* H1 Q# _
0 [" u8 A! {: v* R( ]6 T7 x8 i
setup-plot2

: @7 P, J: @7 U4 {( w4 ~
  @/ d' {8 P* ?, e; ksetup-plot3

0 F/ z- O9 M; ^" w7 W2 wend7 s8 y5 \; L6 Y. n9 e
: I' x' ]; N' g$ {
;;run time procedures
: B5 A: J' a% o/ M; p1 v  {8 ^- s5 @8 Y4 s
to go# S& x7 v0 Q2 V
+ ^: {! [4 B- g, Y
ask turtles [do-business]

2 A, I4 S; C% |) B! d! O1 R9 Tend
9 |4 h5 x( }6 @9 j% J' ~1 G  D& B" C! I# |
to do-business
% d) I% F2 M$ s- e

" o! D8 w9 Z0 c5 _3 ^7 p: y8 L2 Q6 Q; h5 y9 \
rt random 360
6 \% ~5 y3 U# E6 W
' U- d* c5 V  G" \% x8 d. @$ p+ j
fd 1

4 ^, i+ Q) T$ d! ^/ |* @6 q# E, x7 x/ {$ C$ y1 Y. v/ M
ifelse(other turtles-here != nobody)[
3 q, b2 t2 v, h9 g
( y2 m  A- h$ u# T
set customer one-of other turtles-here

+ q# \7 c  k1 p+ H% Q" H% o3 c, [4 M% t! k$ x
;; set [customer] of customer myself

6 ]% Z6 e9 V/ z$ t) ^
  ~" p. U. V& j+ l$ S" Z) a# @7 Lset [trade-record-one] of self item (([who] of customer) - 1)
, h/ i0 V7 y$ p& {  ][trade-record-all]of self6 o- }) C' u' Q' c: T0 A
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
# m6 G; q4 h9 N3 B* v& l

3 L3 D; _: P4 {% G. ]set [trade-record-one] of customer item (([who] of self) - 1)
; e. o  x' @* y' ]: t! G, K1 n- y[trade-record-all]of customer

6 J+ @# o1 x' ]3 q6 f: _! V. J9 M' N; t1 s
set [trade-record-one-len] of self length [trade-record-one] of self

$ G+ t; R1 q% u& H9 l
! ?" G/ y: F2 B; a' A# V  Wset trade-record-current( list (timer) (random money-upper-limit))

: y1 B6 E! |2 i' [, V4 a, t! S8 q  O3 U& g9 F- f, s
ask self [do-trust]
: [. x; H& t5 r, n: o8 ?6 x;;
先求ij的信任度' n& L; p* \2 l' y
8 C6 {) H/ B, a6 v7 r" W& P
if ([trust-ok] of self)
; p9 n6 Q7 J% y; U8 ~;;
根据ij的信任度来决定是否与j进行交易[
2 z7 V( [1 L( T9 `, i$ y; D* ~) f; Task customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
/ H; ?$ s! \1 Z1 e; T/ S/ P, J- D1 w1 a3 n. n' I0 ~$ Q1 o
[
" v4 M, z3 i% h0 p3 _" z
, H: a3 T0 r7 S& N$ R. S/ P
do-trade
7 }' @9 I5 i+ H" C, Y1 |3 Z
/ m7 a5 I. c( F0 [6 O% u! h
update-credibility-ijl

, ]: E( [9 {0 [, g2 E6 I
9 J! Y- r( _% s! V" ]6 w+ g' aupdate-credibility-list
. h( Q9 ]* B, R) k* E8 n
' X9 c* `7 G! j! M7 I( x( R9 }
6 o" @" N8 s- U1 R; H* p% D' j
update-global-reputation-list

9 b* Q2 X4 a8 t4 b1 `9 l. ]- Q$ D& R( v/ C: m
poll-class

9 r( |8 Z6 a7 G1 n0 P# ^9 i# b# @" I. d3 J5 V! Y
get-color
$ i& h, W% z, Y' E
; ?7 D! H( l$ G$ o& A, k! o" z
]]! H) [2 i! n2 I1 Q2 p8 _8 f
. r* m* K# V, `
;;
如果所得的信任度满足条件,则进行交易& h/ G; D2 y  s+ k4 ?

) w, V5 y7 V- g& G. O[

. n$ V; J: j8 u+ Q) y: `$ X! B2 C
1 s. O9 m* K9 f, p/ T# ?5 R4 O; jrt random 360
  I" k3 N# M/ G; p

# {! w9 X8 p. o8 }) }fd 1

$ Z. Y* @$ b' |) g; K( r4 Q2 m' `& [
]
6 p$ A! u9 u; ^' w

5 k0 Q+ f: H3 N0 R  a7 Tend

7 ~* u/ C* V) ^( n5 A8 Z
6 j) I$ d+ D6 h. @; G: Gto do-trust $ h: E( H: \- ?& t. I0 R
set trust-ok False4 b# z  S/ d4 @4 k9 b

" C" X6 p1 U& t$ C

  U# k" x% j  ilet max-trade-times 0
& Y! |. s6 J0 D) H& Sforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]) Z  X/ j: n' P, H* X$ p- o
let max-trade-money 0
6 \% ]9 {5 b4 u: q, Tforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
  ~( k8 w" Q1 mlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
, q: U) W/ m* V/ g# F% G* A( ?7 j1 z' ]/ t

0 _" d6 F% w8 }, N$ W1 j% Dget-global-proportion2 k$ H' H: [! ?. ]
let trust-value
6 ]8 ~* h/ V, p. r/ v- dlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
) }/ Z3 P$ Q  o' H1 Q) s
if(trust-value > trade-trust-value)7 m+ h5 a: E3 q+ W
[set trust-ok true]
& X: I: m! Q5 ?, s& lend7 N+ f. a5 J& Y! h) `; v; {: b- V

- e. [6 v3 i, Z7 N$ A6 ]8 s# tto get-global-proportion
+ A5 v0 P- t1 _! Wifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)7 `2 D6 o( X6 N" [; c" E0 H( E0 p( t
[set global-proportion 0]% N+ Y  |: g0 \  y5 d
[let i 0
% o7 D" g5 I; h2 S( Olet sum-money 00 g9 n' n& x- F. q% H7 ~
while[ i < people]
) h2 \" W6 ~7 }. H0 M- j8 x0 E[
7 O! z( X, Q3 R  u/ k- mif( length (item i. |+ ~1 w+ N( h; \  z5 _: E
[trade-record-all] of customer) > 3 )

& L2 ]% v. O; h# P. z2 q[
8 E) B! z) Q3 F( Iset sum-money (sum-money + item 2(item i [trade-record-all] of myself))7 g7 C& r4 E  H6 C/ z7 k2 p, z
]
" F5 F3 }4 z) b# v: T, {: A]/ ^7 w" `5 j$ R7 p# i
let j 0
" ]) K0 R$ {3 f; b+ rlet note 0* t2 V6 k: c5 i' ], w
while[ j < people]
: M3 E4 L1 w. ]7 i1 a: H& F[
% g0 V- X5 n  @0 ?if( length (item i/ p6 `- Q0 j! h1 o, J+ f8 k
[trade-record-all] of customer) > 3 )

( O- ?. j+ Z* g2 c[
( Z) ~6 o$ C& E" n9 Vifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)7 U2 v4 f5 t7 ]% B9 k
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]5 x: c) P# ^! c& Z$ T4 F! F8 T
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]/ _2 B# A7 \4 X+ O
]
  X+ Z. w" J  v! g0 X% N8 V]
; K# F; e: W2 ^% k6 z; [2 z8 aset global-proportion note3 T$ D, p/ J& t9 C3 X
]# n8 T0 m5 R- V8 Z
end; X: ?* Z6 e: m# N% N+ `2 {' N

; p, c4 ?$ P  O7 ~) V3 pto do-trade
+ ]3 k8 U! [$ ^: v: E- g;;
这个过程实际上是给双方作出评价的过程) Y3 n8 {* r6 s
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价, r% C. D- N$ E/ J* h
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
/ x$ i# I- c& f& d3 ^set trade-record-current lput(timer) trade-record-current4 C9 c9 S; @* A
;;
评价时间
. b+ z+ G3 S- B0 C1 h/ D8 s, W' p" Cask myself [
4 }# X6 C2 Z. }0 I) supdate-local-reputation" Y3 {' |( D1 W  q% U
set trade-record-current lput([local-reputation] of myself) trade-record-current* |0 B7 M' Q/ R( c9 u
]
1 W/ E1 ^8 }: T! Y2 [& F+ u8 Cset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
+ D, q, c2 r; n1 ^. }# z;;
将此次交易的记录加入到trade-record-one
+ W3 V# B0 w% U3 V/ z9 N8 ]: Dset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)* |: p; b6 F4 N1 x% |$ h  W7 u
let note (item 2 trade-record-current )
* _  O" |& o7 H% rset trade-record-current( O4 v* Q1 b" Y, C5 W; }7 Y9 s
(replace-item 2 trade-record-current (item 3 trade-record-current))
4 {  y2 c) J. g9 F
set trade-record-current
7 N9 W# F. z% G1 x(replace-item 3 trade-record-current note)
2 ~% ?/ N6 G" @6 {, z4 c* Z/ V, f, X9 y( O: b
; M; {) m4 Z: m( g: n7 P1 T
ask customer [
6 V: n0 s7 |7 D6 x! x4 rupdate-local-reputation
, w" @  |/ y, P* Iset trade-record-current
. Z6 D; O: p) ^1 ~* P( w. a(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

- z5 Q; t* W$ N% z4 m/ ], i]
6 I6 H' p8 ~; `3 p$ b7 a
8 N+ i6 s8 V/ y, I% F: l5 I

  g5 d/ R9 l; O4 }- t0 H1 i( Cset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
+ ]: t( L: G4 q( B7 R0 W

6 M' q5 w% A3 _/ g& ~' j/ X0 c/ [set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))8 I" A4 Y5 i& K5 z4 B1 F! X" o
;;
将此次交易的记录加入到customertrade-record-all% X. [, k  _9 h. F
end
; T+ y3 \$ Z1 S, T1 g) `/ U. N6 G- Q$ f
to update-local-reputation
) _9 q4 ?7 u" x+ u( B+ V8 L( ?' Dset [trade-record-one-len] of myself length [trade-record-one] of myself
* X4 I! W' }. `
# l' W4 v8 O. M
8 B: q3 S% W% D;;if [trade-record-one-len] of myself > 3
6 f9 o' S! B9 n& N8 B
update-neighbor-total( a+ i( B8 z' u
;;
更新邻居节点的数目,在此进行
4 U! D% _4 z; {; N" [let i 37 u5 H( W; T+ K4 L9 F* @
let sum-time 0
; C9 g/ @6 p: z/ @1 V0 N( m0 pwhile[i < [trade-record-one-len] of myself]6 q, N2 M5 a0 E, C
[1 z, p) k% o. p
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
$ q& g- V+ r. S1 @# ^! Wset i0 H$ v- T. {  p  Y# q! |
( i + 1)

' j5 P0 c- M4 x]
* f1 A7 x* f) @* v' z$ {. `  Xlet j 3
! c7 D9 p$ u& {4 \let sum-money 0
# F8 ?0 f0 m% z5 Bwhile[j < [trade-record-one-len] of myself]
! o( G' o* w+ U' g" a. L[" m4 j$ d2 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)
" w2 J/ A2 g; P1 D) y# v1 V3 f- ~set j
& h$ M2 {3 `. h' j0 j5 R! H( j + 1)
: i. K0 Z. H: [" K) M- {
]. ^% X: L% |* @; k7 {) Y, H7 H
let k 3- T' l1 ]$ P; q+ |: {  e! \. ~% L
let power 04 V# Z/ J5 P  X/ Z& N
let local 0
8 r  Z7 H5 s8 y1 L2 p! u: M9 ]8 Swhile [k <[trade-record-one-len] of myself]4 L2 n8 Q) D. A  r1 @+ I; ?; k8 ]8 @% k* _
[9 d2 n( {  P! z! t1 _/ N8 R# s
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)
9 e0 H3 d8 P, D7 {3 tset k (k + 1)) n* d, V# P# A& H1 j
], B( ^6 ~% }  s
set [local-reputation] of myself (local)
" e" \# l. C, y! x4 F0 j1 H/ `' {  tend
! ^+ o+ Y2 ?# P) \# o8 c& Z6 J' B- Y5 y. H$ b0 ~
to update-neighbor-total- S, c) k: E1 m+ Q

  T) e2 _" G! p7 y: G& aif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
1 ?) S! f( G+ E7 u$ ~' s) S* E0 J0 N# R' [) @
; Y) o, A- ]& j
end- F( X7 r. a" d( R

) I* d) q0 m! _$ n/ mto update-credibility-ijl + Y: W7 a9 S0 [* s# n. D

- b  w$ \( `" c* };;
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。& c3 Z! {% f9 [5 S
let l 0
7 D8 V: ~4 w* u# Vwhile[ l < people ]" _; B% M8 d9 |: 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) W/ y8 U6 T  U6 \! r4 O
[% L& ^8 c$ {& a! }
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)9 h6 ]! I. T) U- f. ?% N/ g7 v
if (trade-record-one-j-l-len > 3)3 b; F/ B) j- I* {: U
[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: U7 H, R8 t  f( u1 N5 l
let i 3
4 }( R" [3 A0 a0 f/ q& {# mlet sum-time 0
# P* h  f$ g- Cwhile[i < trade-record-one-len], N6 R$ ]) h  k" T0 q
[- D% Z7 k' f( f) d! n; i$ o
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
: V; n$ I* c, B% P& E% \8 }  Cset i( Z" z7 n" u0 N
( i + 1)
) G: ~* `: l3 a0 z$ c% I
]5 R4 J7 m0 X2 V2 c# `
let credibility-i-j-l 0
9 p2 ^( ^( z! S$ e* t0 {) N;;i
评价(jjl的评价)4 v! [4 @: q/ F! E/ X) B
let j 3
3 ~  I! z) {5 Clet k 4
, h8 [: Y  u3 W. v# ^. Z- S" swhile[j < trade-record-one-len]
# |* c' R) B  M* M+ Q3 R, A[
& H( v! O* L$ e: @- W; H9 y, mwhile [((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
! t; O5 F! l- }# _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)! J  j; j% |; r6 C  o
set j( l* M+ h4 X& J" x
( j + 1)
- a* W3 J% Q; z* P
]
4 k3 k' [$ n( B/ v5 P4 zset [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 ))7 ~3 ~: r+ j/ n' h
: S: I9 \: w) f3 Z+ w3 T& P

8 p7 p" w3 o9 Llet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
. N' d( Y! X7 L;;
及时更新il的评价质量的评价  d& s+ S5 T$ @- z2 N
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]' G; Z+ O8 h. l2 e) l
set l (l + 1)
: h) h: J6 a) X9 k0 e7 p" Q]5 g$ W8 Y- A1 a: c1 E+ f
end5 M, N" l  X3 Q% h
/ s( `7 X5 T6 n( \+ K6 K" t
to update-credibility-list4 Y( K  a+ u% {1 H
let i 0
9 u' O) e5 P0 H# lwhile[i < people]
3 Q( k: X8 v& n+ {; h- z" y[
# h; F# p, P' T: c- \let j 0" J& b; C/ c8 r" c3 x7 o
let note 07 K3 n; r; A4 D  b: A
let k 0- }1 a  D) f/ N! Q3 ^2 D
;;
计作出过评价的邻居节点的数目2 @* V+ c& g% k0 L8 G
while[j < people]7 X# n; M5 Q; g5 T( k
[
7 B5 N5 g7 o) l8 P9 zif (item j( [credibility] of turtle (i + 1)) != -1)9 \+ Y3 x5 v, k2 \
;;
判断是否给本turtle的评价质量做出过评价的节点2 R" a1 R6 X3 z0 t- X
[set note (note + item j ([credibility]of turtle (i + 1)))
8 c# _0 d4 q. @% ~" G;;*(exp (-(people - 2)))/(people - 2))]
0 j% }9 w$ U1 M
set k (k + 1)
1 d# z5 r- \9 Z8 n5 `5 s8 W]; ^' j7 ~$ I; W) X) M# Y# n) D
set j (j + 1)
9 P, x& @" M0 [' c4 ^]
4 D+ |9 J! b+ ]6 D; {set note (note *(exp (- (1 / k)))/ k)0 o* V" @6 K: t: U# C" C% w; @6 f
set credibility-list (replace-item i credibility-list note)* D: L8 D( ?  L
set i (i + 1)
# x- u, ~# }9 O; I1 }# a, R]
# z* p2 N  H$ `  [; ?end4 ~% h- o/ ~! J6 q# U
8 H* G& s+ G; \! _5 l
to update-global-reputation-list8 p9 B7 j* \9 H6 L9 }) [
let j 0
1 l* h, O+ y- }% V# C9 swhile[j < people], r) k% |- `2 J0 ]3 g
[
* V+ E: X, e1 i/ J* {let new 0
; E' y$ ]- m1 G;;
暂存新的一个全局声誉2 Z! a2 X5 h) o7 q' j
let i 0
4 V) Z( @( c) B4 Zlet sum-money 0
/ C! L! D8 z1 C1 B- @; F9 Plet credibility-money 06 d$ t( ^* N+ h* l% U5 }, M
while [i < people]) C0 o/ L% W% J
[/ A. g, H# p/ [  V- @7 Z
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
9 Q* v2 L3 R- h, N% fset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
! D; ?) o& o0 gset i (i + 1)
- {7 H8 q: P% E. A5 v; ~% v1 O]4 m8 Z) a" w' g  y
let k 0
/ e+ ]1 G, o* v3 _& _0 vlet new1 00 s1 k3 v5 V; d6 v- i" p
while [k < people]5 s' r2 }. F& l  }) I
[* Y. Y2 @$ O) R# b+ h- x, S
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)5 H2 l  r1 K% X" O: {
set k (k + 1)6 p+ f7 q! f' S$ v7 u
]" X* O4 J! w1 Z6 z. w  x/ f0 U
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 8 R  E  c; S, G" d( g
set global-reputation-list (replace-item j global-reputation-list new)5 K1 ^5 x8 s) y) B) ^( o
set j (j + 1)
" \6 M0 i0 N& v  E. Y2 `  x6 x]+ Q# ~. @; s4 l" w' i1 d8 I6 |$ n
end* f/ q- Q5 z' R5 o% P* s$ ?; {

6 O. W& i* r; f7 N9 P: U( X" T7 l/ o' x; b% O) l
; f; g3 h! `# O+ z* y
to get-color
0 ]% Z: X3 {3 l: {  ^1 p7 M
( o( e/ T! ~9 P$ ~5 oset color blue

+ }- R0 m! ^- C6 G: t! Iend" l' `  k+ M4 p. p/ g! W
# ^5 I/ J! D6 j0 |6 `7 F. a
to poll-class
9 h0 x  e( G0 T4 B% jend( Q  `" F/ e) T- y; X3 m9 W, J) s

8 M3 Y# t6 U# E3 p' _! w2 O& e4 [to setup-plot17 M7 s" c: O, ?  k  l+ X

' I2 Y* M1 W* a3 N/ J+ kset-current-plot "Trends-of-Local-reputation"

: k4 \0 G. `, `1 ~6 D2 l& J- i
set-plot-x-range 0 xmax

4 ~5 a6 I- o  {6 N
# g7 S: J  E# j2 i; s+ F2 Y- x$ `set-plot-y-range 0.0 ymax
2 y& I# y, }1 k3 ?# H6 p: A
end
" {- W/ Z1 V! g5 P; T6 F% x# N, O$ i7 u) o
to setup-plot2$ I4 g3 J" x" M7 e9 b" g! d3 D/ \
- L" ?+ `* R: q, G
set-current-plot "Trends-of-global-reputation"

; {1 Q! R( a3 S; k, u! `$ ?3 s& U' n! ^8 `2 c1 T: [9 W5 C  b! t- c+ E
set-plot-x-range 0 xmax
( ~5 v/ |) E' x: ~3 V1 V
" K' r* \+ }. C( Q+ I& p
set-plot-y-range 0.0 ymax

: y/ J, \: y5 n1 N6 f( r1 d9 vend
' }. V- o  J' E  \. I9 J& [3 Y4 C) e5 Y# n
to setup-plot3
; ]3 A- \& l# e3 [9 m% K) G: f3 g% A1 x  k
set-current-plot "Trends-of-credibility"

5 v) y0 k# s6 Q% ^5 z1 [7 @" K4 \  K8 g0 }, M6 K- Y) V% B
set-plot-x-range 0 xmax
& X7 D& t( ?1 \

8 R4 W) v( o. Z+ r  e- V. D% w* F$ nset-plot-y-range 0.0 ymax
; v" w$ f3 W8 }$ Q+ p+ T0 V: w, D7 f$ ~
end6 S2 I2 F% t' k/ p# M  A5 C2 z

! L7 Z& M! P7 P9 dto do-plots
/ V3 w  d( y. j: Z6 H5 Kset-current-plot "Trends-of-Local-reputation"- A, T1 g, d" J+ i2 r% e& t
set-current-plot-pen "Honest service"! x6 O  `, Z; T4 O
end
, I+ [: x2 t! j* c
" X/ {. d1 O5 B- b0 |. T[ 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.
7 _* U7 o0 e1 M5 D/ _- T; t9 l, I
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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