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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:7 D; v' {' T4 O! y3 w
to do-business . |: F# l& U* H  l7 ^
rt random 360) l) }9 b: m3 k# s$ M
fd 1: `; j( r# D- }: S. G3 {9 o
ifelse(other turtles-here != nobody)[" y) z( X6 @9 Q/ H, F: E2 c
   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 v2 h  l2 L( |! s+ E   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
4 {* K6 L6 @5 O$ f: _* O% r   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
' `6 E3 T) P) j. p7 z0 \, N   set [trade-record-one-len] of self length [trade-record-one] of self
0 H" I0 W2 ~8 s) c0 R5 P   set trade-record-current( list (timer) (random money-upper-limit))
. \$ z1 A/ P( g0 @3 c6 X. m9 z6 V+ X) N3 ?, u
问题的提示如下:8 }! B, g8 v$ b- x& B
; N8 S! X) `* |( U/ d
error while turtle 50 running OF in procedure DO-BUSINESS  r8 g' s7 k* K, Z
  called by procedure GO/ i# k" b$ h- _( X
OF expected input to be a turtle agentset or turtle but got NOBODY instead.' D/ ~% n% X: j# e2 H( w6 [/ ^
(halted running of go)
7 c1 T9 J- z. S1 J
8 z" y+ s- }6 A3 u' `, G/ t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~~! C# h& I# V+ C( }0 Q- w. ]! R6 ^  U
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& Q5 q. W8 K; j- z; E8 H
globals[
7 C. s5 ~/ [4 j; D) V* Zxmax
$ K  a5 |; d0 v' {2 _5 Nymax% }$ T8 I' b( ?9 t0 E: ]  j
global-reputation-list' _. i# A8 |/ R. x$ l, K
( y5 k, {( L9 v  p0 z) g
;;
每一个turtle的全局声誉都存在此LIST) Z& V. [0 ^% I" r
credibility-list1 |: k; G7 ]1 s7 S3 ]
;;
每一个turtle的评价可信度
0 m$ }) K$ _$ Q' H+ ahonest-service, K. o  y6 J/ S! ~
unhonest-service# x0 w7 D3 G: u* C" X
oscillation' n6 ~, Q* P/ y
rand-dynamic
/ u) R, P8 n: K8 c]: d* B/ G7 U- i
( F# j: D3 M/ J; {) K# S0 A; E& S
turtles-own[
5 Z6 ]/ P2 p  \1 K6 @, `# ptrade-record-all
1 U! b- z; [8 _2 L) u3 l;;a list of lists,
trade-record-one组成, `2 }% w% u: k: ?2 Q
trade-record-one
' K" E: R: i- f9 M% F" ]1 i& Y5 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0 [- v; q% v: y7 l! G% W
2 }: F' V+ ^# R5 ^
;;[
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]]7 g! K3 @& [$ W2 I" x
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]9 V* O5 s( ?. ~
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 a) V, A  z: N  xneighbor-total% v" t! I3 c" y! {* i
;;
记录该turtle的邻居节点的数目
" s; |8 o3 R3 }4 j' s4 Q3 N7 Utrade-time
. e4 x0 t- Q& s0 z;;
当前发生交易的turtle的交易时间
0 Z$ j- b( f: H" w# a4 oappraise-give
8 ~& S3 ~/ ^( N;;
当前发生交易时给出的评价4 ?& A$ a' d' J# P
appraise-receive$ w0 I8 p( h% `
;;
当前发生交易时收到的评价
! E+ M1 m2 J( t# Aappraise-time1 `2 W& f$ A( e4 G0 t
;;
当前发生交易时的评价时间
$ ]- Q7 U& Z5 Z2 O, J$ }local-reputation-now;;此次交易后相对于对方turtle的局部声誉/ j9 C% V8 o. v) |. z4 H
trade-times-total/ R6 V0 T8 }7 n" r
;;
与当前turtle的交易总次数/ ?" C; E4 @6 k- N- R  Y
trade-money-total; X: z: A9 h! ^1 T
;;
与当前turtle的交易总金额0 T0 Y# Y  Q8 Z- ^( {5 R  P
local-reputation
3 _2 y& p. a0 s. b; k6 P: t% Tglobal-reputation' p! Q+ S" I9 I; p: F$ M
credibility1 I, N* ^6 z) \. g
;;
评价可信度,每次交易后都需要更新
  n2 T, p2 A4 B7 N! W7 q. x/ xcredibility-all
% A3 N/ ]4 M  q3 z% l;;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5 D/ [2 u* {$ u6 g1 l2 }! D
; `; q% c! p3 {: Z; }7 Q3 g
;;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. C- u: ?& R* d( A( o9 K
credibility-one6 t% Z3 n5 }7 O. H( K# R/ w
;;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
, z/ W  ?2 z/ J3 tglobal-proportion. q+ q# X# {0 V; s& s( V
customer
, g' X, B* N& g& N' }( i% }4 E% T( rcustomer-no
: L2 y6 ]5 s7 y6 u8 Utrust-ok0 a- H3 z) _( l& |
trade-record-one-len;;trade-record-one的长度# y3 c6 E% I; ~( h6 }
], E9 _% B7 D; L

- \9 c2 Y; l3 l# Y1 N# G/ {;;setup procedure
7 ^3 e: e, U. V! y+ _2 X' c0 ~
( S5 Z0 ^! R- s% D* `( {/ Uto setup7 E  T0 ?& N$ D/ V8 q' H- q6 R4 ?

: g6 y; u$ w' nca

$ h6 |, ~9 K3 B& G! L  Y
* i$ x9 Y' _" x% v1 j6 U/ ninitialize-settings

2 d2 Q! s& Y7 A5 Y1 e# j" x0 z! A2 Y
crt people [setup-turtles]

5 ]% ]. k7 n4 E0 a3 w6 c3 f' B
0 P. D  T+ w9 G' Ireset-timer
/ R' M7 H' D) \! v

4 q% o+ e, X0 R7 H& ~poll-class
2 V* T9 U1 V  T0 {- x) n
% f4 ^0 |& ~# J+ [
setup-plots

  u9 L1 J& y7 [! p! Y1 s7 l
+ x6 i4 s( V( d1 E& T# bdo-plots

0 [! `5 H. ]6 v% Gend; ?5 b1 e/ e3 Z  A. x

% i; [2 z" t; {to initialize-settings
( W1 U/ Z; G  H+ u; P0 h$ t7 d/ t1 `( H% j+ a! q0 B( R
set global-reputation-list []
9 o. O. G6 E% [

3 k7 Y5 O# d* c" N6 aset credibility-list n-values people [0.5]
0 O7 a# u5 H+ n! n2 [* u1 n

" Z  {2 ~9 N1 N% Z& O3 w0 e; Tset honest-service 0
; x5 q1 ^' L+ C5 \, a" d3 m! K( o1 v
- {/ I# d8 L; c
set unhonest-service 0

7 Z' w1 i1 B" G- V. F4 t1 a* v9 ]# C! d( ]7 R! [8 a- H5 v. z4 r
set oscillation 0

, X1 K1 {( t$ C  \* Q1 i" G2 c. `1 \: t5 @! [, r0 @
set rand-dynamic 0

9 v' N3 H% D" gend
7 t7 N( T& V& r- ^/ _. T
5 o4 c+ J/ o& r! |! P" Pto setup-turtles
: l* M. g: X6 `! I* Mset shape "person"1 z, h: l& c: x& Q2 j) G0 U
setxy random-xcor random-ycor- X4 l: C! a6 o6 O: M- e9 h  ~" Y
set trade-record-one []: Z* C$ _6 k$ ~& u

; U/ t2 l& W- N7 |  h6 ?- B$ J: P. D2 {set trade-record-all n-values people [(list (? + 1) 0 0)]
4 q7 _: S1 T/ u! G0 `  m! W8 W" t
% Z8 P2 X4 y: _! V& V
set trade-record-current []0 T1 A/ \2 {0 a0 \7 `% b
set credibility-receive []
2 V1 w3 a& }, J! fset local-reputation 0.5
' ?( p/ L4 ~+ s% h1 Lset neighbor-total 0' l8 w. r8 z  w" @
set trade-times-total 05 Z1 z1 B: N0 f& A  r1 e# U
set trade-money-total 0
& A1 Q8 I) v( Z3 @% b* i( c& Hset customer nobody% w* ]* n- p5 s- e' V' c
set credibility-all n-values people [creat-credibility]3 \- A5 S& }' a% Y
set credibility n-values people [-1]
3 ~9 v4 e2 s- g0 `get-color& l& ~# M- [; ?: E: o1 E
9 h4 H/ m: t) g4 @! F( {
end
- u, o8 g+ g( n9 N2 L
6 Y. q5 X" O' ?2 jto-report creat-credibility+ ?0 L# {% K8 O" C) L" H/ {  ~: \
report n-values people [0.5]
# A4 |; L% v+ |! yend" R3 ~2 T) e; |

  o2 ?. K) L& {to setup-plots
# L3 B( N' a/ A2 m. |) C' q1 S; p+ O! F
set xmax 30
! e/ D* E$ e5 B# `7 f# B( o4 d
9 D% j5 R; m0 h3 ]! [
set ymax 1.0

8 L- n8 S; \* g
( ^$ q2 I0 t* V# E% H% f" E9 qclear-all-plots
- c/ b" d. q$ @! z- }( I
. O8 a5 T2 c9 ~3 r) h" O
setup-plot1
  `  P. A/ \/ d. q0 ^- `8 x% E

+ F/ J# A4 w8 n- i9 f  O9 L- asetup-plot2

/ A1 M/ r2 N+ Z( v( p) p5 E- u: @0 Q# S! y9 L  ~8 Z4 b
setup-plot3

. H. P8 @1 L; L2 n& pend
& I  A' v' [0 ]( i
2 z9 }7 s" U$ n$ `4 l: z0 ^;;run time procedures1 K) \1 x# W4 L
4 _# B: W3 Z8 ]  C+ S7 \( k
to go- Q+ a5 r7 R1 H: e" \3 L

4 h2 Q% u) [/ R' ^) ~ask turtles [do-business]

8 e; A! K" @* ^( F/ b0 v4 b7 Yend+ ~) @% ~& s- O; u. g

0 S1 v1 k/ y! @6 {- ato do-business
, h7 o" q! d0 A! J# n% c% _6 K

9 D+ Y/ A4 t* k3 y9 R$ `+ a9 b! p* L
rt random 360

  j" K0 o& k. ?! ]. a+ o
! E) K$ @0 J% V2 P0 Q3 Q* v1 Zfd 1
- z7 y4 t7 s. V6 ~6 y- t
6 `. {( u- _. e+ `2 ^8 U
ifelse(other turtles-here != nobody)[
" X1 _' X* t. l" [

( X; v3 D; C) }! gset customer one-of other turtles-here

+ \! T+ v! u1 d: G7 j4 C
3 K2 b  t) y5 U& P4 l- k  Z+ L;; set [customer] of customer myself
" }: u( r; @( K% L7 j8 M

3 K5 ]7 u- \% e5 H: Oset [trade-record-one] of self item (([who] of customer) - 1)' P4 d6 m/ l* E" y. e
[trade-record-all]of self
% r& Q& g( ]0 i2 [2 a;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
2 o; q# d$ A  Y+ q2 ~. n
8 E2 U* H' l) [
set [trade-record-one] of customer item (([who] of self) - 1)1 l1 K8 e% b$ X0 [. I9 K6 c' t
[trade-record-all]of customer

  u- }$ [8 K6 M# w; l3 ]1 y5 q' ?. {! U7 K, q
set [trade-record-one-len] of self length [trade-record-one] of self

/ H$ R# y# ]+ Z! ?1 _# N- n3 Y1 C
  \' I5 R4 }/ [' aset trade-record-current( list (timer) (random money-upper-limit))

3 v, `* v) P# R: ^4 m2 j( }! z
" N& \5 }: `8 @' mask self [do-trust]
) y5 x, b' d2 ]+ \  a;;
先求ij的信任度
! L6 P" e$ ]( H! W- o0 u) d; I( k+ g9 D
if ([trust-ok] of self)( I' g/ ]3 L; Q+ q  B
;;
根据ij的信任度来决定是否与j进行交易[0 u. I( }+ J* b$ [" |# U* ?8 D
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself5 [0 K3 F% H3 }
0 {2 b0 V  E8 }6 j0 ]1 v
[
! x% `8 X1 A) |( h( o1 g$ S& w2 \
8 w8 H* h% Q( F4 k6 P
do-trade

) N3 n# ~( J/ J) g' M
# f* O- K- V" i' H' ^$ p/ X% Jupdate-credibility-ijl

9 @$ h0 V* l' c1 [2 t& O. J% R: Z% S6 ^' l2 c" @, a6 r
update-credibility-list' {0 y) Z; @( E
' P. k% a- [3 a6 _9 ~, @' j; d
' g) j4 z5 U/ C- z5 \; e9 U# |
update-global-reputation-list
5 W* \9 P& R' F4 {6 `! b

6 z2 `8 l9 X. l3 j& @6 A6 k* }poll-class

+ p* @: h# ~$ L1 [! R) i7 Z  D& p$ Z  Z4 Z# D
get-color

( m. R0 m- U3 o* y0 e9 {& ]9 d: l/ ]8 n. }' o( R% M1 ~- N
]]! R- L# L8 K  y. N

; L) X2 l" ?$ R7 ^; V0 z/ {' j: c$ b" U9 E;;
如果所得的信任度满足条件,则进行交易
$ t/ k) u; j- ]+ S  S! u# o. R* }3 m
[

; M0 d+ N' _: W7 s! V9 M  a! D
3 U  p( n1 G% B* K1 y- E% ort random 360

1 t$ Q' y  K: e4 l8 M  ^/ ]& L9 [
2 R6 ?+ B9 J, Ufd 1

3 F" k! B4 D  ^0 I" h3 s) G! v
, H5 ^( X3 X# ~# w% p8 q. p]
% s9 C2 f$ u) k! C
- X7 M, N& }3 X. Z% [
end
: o( l7 M8 @. O: N% h
6 _' I) b/ B# L
to do-trust & R+ b- ~# w9 F
set trust-ok False# _1 p, ~+ `* _1 j- i
9 N. L. \9 h. G- r+ m0 E" G
4 U' a3 h/ E2 ^4 _; r& Y6 r6 ^
let max-trade-times 0& n* _$ Y. T$ P" @8 I. T# S( Y
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
; I. z7 @& h; U0 B$ W" i& v4 llet max-trade-money 0
/ x3 I( L3 z+ C# wforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
2 w; P  D6 Z4 Y+ V. g, Plet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))9 q! T& I" Q' r3 D* t4 m
9 j, x" r  h& V+ f; ]9 M( l
) ]$ f# e* B! t- Q& d
get-global-proportion
3 \& N5 T1 J9 t2 p7 e! ulet trust-value
" Z/ S3 F  X% g2 L3 Z) {' y# 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)
) ~' l* ]. x2 S. L1 v
if(trust-value > trade-trust-value)+ }! A- j( ?& k& V
[set trust-ok true]% K1 S+ g' T. d1 s3 }! d) x3 Y
end0 x: X; h, y7 d# `* V4 @" a1 r) I7 n

$ K6 }8 U0 `* L2 Ato get-global-proportion; h/ a  U. G9 R/ c
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)2 A4 P- V; Z0 W" J+ t2 t
[set global-proportion 0]; z0 q6 V# W- [4 F9 A0 g1 k
[let i 0/ h1 @8 \* Z! D( `' A
let sum-money 0
2 r8 P. }# P9 W, R3 D" }. X- Xwhile[ i < people]
+ E2 v  a" R* F- o1 d7 d0 ^8 B# _[
: Q! O9 g; n/ ]* iif( length (item i
5 @3 @: k; B% \; p( b[trade-record-all] of customer) > 3 )
' j( a0 @6 i* X  C
[3 P/ d0 n0 f7 N4 A
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
4 e" Q' R* x1 e6 O]
, Q( I* ^! q" T5 w1 }]
9 S8 F& U9 ^5 r# olet j 09 ?( ^& E9 ~" z% h
let note 0; i$ W* ?4 Z# A9 J
while[ j < people]
8 h. i4 l& s- U) J[
$ ]% Q2 n$ r' gif( length (item i
6 q( q; T# }( j[trade-record-all] of customer) > 3 )

3 W8 _7 J. ~" e, t& P: m* [- {% _$ u# j[9 w  N; T; e  ~" g. e
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)3 A' {8 T. }# @
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]% Q* ?5 V% Z' d: x$ y
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
0 L4 |3 q; U- f]/ D* H4 ~% {4 b( L5 M
]
" v) X- j4 i7 }5 k) J* ~set global-proportion note6 Q8 Q7 ]' @/ A* `+ q1 l8 l5 d! g0 c
], W% }, _( Y# b4 ?
end
3 }( j! k1 d) o* q5 n) @4 q3 T8 s/ e
to do-trade
9 b- c! N* F8 U; |8 q8 e;;
这个过程实际上是给双方作出评价的过程
3 `0 ?3 T  H; ?set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价# x, B6 ?8 W5 d6 x) n. g. s! l
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
: q2 u8 E1 I$ }1 g3 T& F' |set trade-record-current lput(timer) trade-record-current9 U, L% i; T# c( x& X
;;
评价时间* ~3 e9 E% T0 L% x4 ~
ask myself [; ]6 r5 O# {2 f9 D3 }2 u- C
update-local-reputation
# O5 ~8 T+ S+ T4 {3 I9 T: Qset trade-record-current lput([local-reputation] of myself) trade-record-current1 I% \+ Y5 J9 Y% d% n6 b% F4 {
]
# ?' ]) ?6 h" D7 I& o: E( Xset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
0 D4 B2 C5 P2 P* y;;
将此次交易的记录加入到trade-record-one
3 K' ^& k: _+ N9 q6 g/ [% ^/ Aset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
+ S, h3 Z, L8 F8 {let note (item 2 trade-record-current )$ j. C: H8 o' v6 n; M/ {
set trade-record-current
( ?  a# x$ U2 L; Z& T% W(replace-item 2 trade-record-current (item 3 trade-record-current))
# [2 `1 w7 a( s6 R
set trade-record-current, |( P, ^2 J! T& ~' ^! y
(replace-item 3 trade-record-current note)
6 i# V7 ~* }* F+ x/ k- u( N% z, L  T6 S0 o& a

; s4 [% U5 X! z% t) d* Z+ o1 ]ask customer [* E% P9 w! e! @5 }) h9 |- ^
update-local-reputation& b$ {* d; Q/ X8 ^3 \+ R
set trade-record-current* a, _; J' ]  J" l8 v" V
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
5 ], W! w( a! W4 p
]
; j% a9 c! |  c) B' L
+ S0 Q! V* J3 H5 s# |* K$ H7 X

+ Z# r3 }" m6 [% `  Iset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
5 B6 P5 @5 r4 e4 o, D1 u+ f9 y1 Q

9 G2 ^  z3 ]' ]set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))3 _" g4 ?7 R, h2 X
;;
将此次交易的记录加入到customertrade-record-all
9 B% k8 X' z+ [! bend
4 R' m4 p% h) S$ r+ ]8 a+ s* K  Q- i6 d( u/ Y6 P0 B6 O
to update-local-reputation
) T% I, m' W4 a8 K" |  ^0 Nset [trade-record-one-len] of myself length [trade-record-one] of myself
; ?3 m  t) ^7 f, w$ Q3 d
2 M3 e" ?$ Y- n
" l" Z' d0 S" n% x2 j2 x- Z+ b( Y( z;;if [trade-record-one-len] of myself > 3
# ~6 l) x; ]$ t0 h1 ?2 y5 t
update-neighbor-total  x5 a& H+ Z3 R4 u; b
;;
更新邻居节点的数目,在此进行
( L( H7 F+ j8 U: G2 j5 A( alet i 3
* `9 @6 A6 I$ {0 }; ~' x; D( B5 Flet sum-time 0
! U$ E: k3 e+ T6 L4 x3 \, _3 @: Ewhile[i < [trade-record-one-len] of myself]: ]/ Q  |& n( d
[
* m7 ]$ B! ]( e3 F" @, Jset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
. h7 j9 M/ @. M2 ]  m; @. bset i
! c% m/ `( L& N" \( i + 1)

, E! c7 `9 Q, s1 v]3 T! z. |1 s$ k, p) q' K
let j 3
0 F) N+ A! Q. ylet sum-money 0
. x% J% W9 U4 A1 c# r) hwhile[j < [trade-record-one-len] of myself]
1 Y6 S; H0 O. ]) f2 f) A, P[
- r6 ]: O4 U" Z' u; t6 N4 s$ l7 hset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
1 i+ Y4 Y8 P/ P4 |* G0 g* F6 mset j( u, u* i6 R/ A$ n6 }1 f
( j + 1)
& k& |& ]) D3 m5 r5 M8 M
]
4 a# U* {. @7 S0 \+ ylet k 3
3 q+ j1 q) o% h# k1 Mlet power 06 D2 \: \2 y; j, S
let local 0
" y% m1 V* E$ Z, B+ ~1 {$ ^while [k <[trade-record-one-len] of myself]
6 z1 U2 A0 u% R. {( ?6 U  L4 S[, }, X; }  s4 ]% W
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 z" J( S& V% `% q/ Q- C6 ]set k (k + 1). _7 B( T5 b9 Y- C9 G
]
: t; I+ }; r4 N, y2 f) Nset [local-reputation] of myself (local), o- I1 H6 g- L) D" _9 f
end7 N1 B" s7 W1 p' Z% B
1 M3 W( c& E# u9 Z
to update-neighbor-total6 F: T* a8 G6 M9 K+ c

5 k5 ]1 o9 X0 @5 v1 z/ kif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
3 U$ `' D( O: X. U& }. P7 Q0 t) J6 y: v! h2 B; }4 H0 O- O

, `) D# d) k, C* p( Gend3 Z6 k+ a$ x4 @0 }% c2 [

8 _7 u! K5 b0 [0 ato update-credibility-ijl
8 E3 ~! V- ~- o. v  f  U3 d
8 V% {3 d! x( I1 x, S;;
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。9 u7 `! u' S' a3 g
let l 0
  f$ {8 H! ]+ Z! X( ?while[ l < people ]7 r( [. S" |& s; I$ V+ z8 Q
;;
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- d  H4 h0 V/ S, T8 l# W, v
[
! B# `9 Q) `2 n9 U3 d& c7 _let trade-record-one-j-l-len length item l ([trade-record-all] of customer)+ g# T$ N% x8 X+ [& ]5 w, Z$ h# A/ B
if (trade-record-one-j-l-len > 3)" }9 L8 J/ ?# v: h6 p8 }) |" |8 _
[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
& d/ f! n% |8 n9 ~let i 3
4 k: I: N8 ]* \" _* `( f/ G  clet sum-time 04 ]* d) y) t; Z
while[i < trade-record-one-len]5 T' |& v: G+ z, J  T1 F  @
[+ u" D8 M9 Y2 U! g. X" h
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
8 }; S5 H  C: t% W- Z) I7 ?# P2 Wset i; U9 \, C0 H2 E, U0 a
( i + 1)
5 u9 B2 G- b9 I3 }& }7 O9 f. p3 V
]
* n( i2 `0 K1 j& i- S0 W  L% llet credibility-i-j-l 0
% c( I! Y0 C3 p" @! j;;i
评价(jjl的评价)2 F: A0 J* N" J: ~
let j 38 r0 t8 d% F; W8 N7 f' |
let k 4" C5 A8 p, d  C1 n) T& D  [
while[j < trade-record-one-len]
4 Y2 o% }. Q, s[
: k6 v3 o8 M$ @: Iwhile [((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6 t: ~; ?0 P1 B' \8 Z& e6 F
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)
/ q' a0 G+ q) Mset j  @2 a9 P% K# ?7 W4 i) P! ~
( j + 1)
/ {3 ~  {6 X5 J( M/ s
]' H. d- |/ C! u& P) y
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 ))$ I8 D$ ?  k) ~& W
7 S0 @0 M& F$ r6 g+ u
$ W, l8 i* [: n4 W! f/ c! x
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))" j$ h: L: L$ |2 f
;;
及时更新il的评价质量的评价1 P/ u9 y% i/ L; v6 p
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
- W" z. b7 {3 ?3 j( Dset l (l + 1)
7 x% ^7 S& \. m0 H' T0 R$ e: S; |]
. I# ~, c6 d" gend! n6 o0 M) a9 u5 P" k4 d

( M9 D# Y& W9 i7 `& v/ ^9 w* [$ \: E/ kto update-credibility-list
6 i; n1 [2 I( [; B/ T9 ylet i 0
* m$ N& c( ?: Z+ f- b- fwhile[i < people]
- F" \" v9 _: V* T[
* e! a! q/ U1 J( b& \2 A0 ~- s! ^6 hlet j 0
/ J% w6 A$ V& f* y% |& U# V9 olet note 0( o$ l, b2 g  E5 `
let k 0
4 u, A- G+ v  U;;
计作出过评价的邻居节点的数目9 M7 b4 s# d/ K! e+ P* l4 f
while[j < people]; i* }/ Q) R0 N- C1 A, D2 U* Y
[, |. y; x5 ~5 p
if (item j( [credibility] of turtle (i + 1)) != -1)8 Q5 d8 r% \1 Y8 Y- ^" W9 {4 b' A7 l
;;
判断是否给本turtle的评价质量做出过评价的节点2 Z1 ^. {1 q/ c3 {, E2 X+ h
[set note (note + item j ([credibility]of turtle (i + 1)))
8 C- E- y: b1 J0 A/ t;;*(exp (-(people - 2)))/(people - 2))]

6 i( S+ H4 o5 ]  g# d2 q. M+ a5 ?set k (k + 1)2 q: b6 b2 m$ n9 I+ ?3 D
]
% N  V* ^. T8 B: gset j (j + 1)
% w+ {1 y: W2 h. D]2 z( L* A1 s% F/ S
set note (note *(exp (- (1 / k)))/ k)- a5 ^. Y  L7 f; }# L, e0 [9 a7 D' B
set credibility-list (replace-item i credibility-list note)8 b' c9 ?- }+ {% w& O) H7 d
set i (i + 1)- V! f8 A' v, L% y9 B1 b
]/ M: e* H7 b, A9 _, I
end
. {8 w2 Q' V) o! U6 k$ d! O  `3 t
' P; W8 Z3 P' R, W, |& H4 |to update-global-reputation-list
  L# G% A) l% b0 y+ r" a' Dlet j 0& f, \% i" w7 ~7 I/ L5 X
while[j < people]4 [0 i9 H4 @( r
[, J! n" O' ?8 p
let new 0
3 j/ D' `+ _) x; v; l;;
暂存新的一个全局声誉
/ ^* O* Q8 d: zlet i 0
9 B0 k* B, g7 G6 e% y3 u9 n/ ylet sum-money 0
7 D& b# T& L8 Y0 E* S) X, F5 vlet credibility-money 0
' }& u1 }) U  C/ ^1 Gwhile [i < people]# Z/ I* w/ f" m
[$ A$ d! i# g- i# I
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
! H0 N8 h; `8 h' w0 \* Iset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
- R  l8 e- K1 P$ Y. a: a6 I; H6 Pset i (i + 1): y7 O0 c3 C4 _: x% E6 d
]; O* ~7 o) U6 e/ g, ?+ G* E) n3 k
let k 0, _$ _) H" f) B7 X, ?
let new1 0
  ?% \' Y, @3 l% ~8 o# R5 f! wwhile [k < people]
( M( ?  u9 G( R5 J4 f3 U* W9 c4 _[- m" }1 A$ Z, n$ q) L7 Z
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)7 Y; u1 ~/ d/ I3 R
set k (k + 1)" V$ o$ u7 c- a8 P2 q( n$ A
]3 d6 |: P! B9 h( \5 N
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
9 w; x( W4 m* Zset global-reputation-list (replace-item j global-reputation-list new)
# A3 E: [% ]  K- bset j (j + 1)
( M$ [7 d. `, N, I; N/ ]]
# O% {( ^& x: o! Z; [; B! y4 Xend/ p( o) [: [2 K

& f7 {$ L( o! x) \* E+ b1 {/ n* a# ^

2 Q- l; Y; E' }+ e& i3 yto get-color4 p0 X6 u7 p  A/ t7 |$ N- W8 n

6 |% h1 |- w+ S3 J" x+ D; |set color blue
# e3 k& [- k8 L3 ^
end$ w, Z1 B4 N  v( Y2 G3 N

( U) b; y# e5 ~* oto poll-class% L7 N+ o- N) [! e9 K
end
  C3 L# P1 ]' h( M  h8 g% D2 w' D2 y9 j* H! Q8 \4 |
to setup-plot1
1 N8 e5 ~3 l( b8 V
7 x& d1 Y1 B# U3 K* Hset-current-plot "Trends-of-Local-reputation"
4 m: ]0 a( }: v2 c0 `4 ?( o+ L

2 r* I3 z/ Q/ P) V* ^/ Cset-plot-x-range 0 xmax

, y$ j; {1 ^! z. p' x- o9 @. T" _+ r3 l3 [
set-plot-y-range 0.0 ymax

0 t& R) o5 _2 gend
" N$ E8 B) x. l7 d4 ^# z, L: f& r
* x0 w. G. U1 y4 Oto setup-plot23 ]: f; r! x- w# [. B5 R# h

6 i( Z* l/ h+ f8 ~2 ^set-current-plot "Trends-of-global-reputation"
8 Q9 C0 X, @/ J5 W  q% ]

5 j% \& l; m& g+ C8 qset-plot-x-range 0 xmax
) h  T5 S# W" V$ Y2 @; {: A
3 Y+ w! g* }9 C
set-plot-y-range 0.0 ymax
5 [- @) P& d* l8 j
end
0 D) E! q$ m2 M- J3 r% m
( N, F. j+ {  V! S& F/ R- qto setup-plot33 r  y9 y# b4 x, Q6 }0 C0 d2 A' h+ X
& \( g  D9 M2 l1 E9 G. O
set-current-plot "Trends-of-credibility"
8 q# ~1 r' ~  m
' Q6 P% c4 k" C: |! k" M+ }
set-plot-x-range 0 xmax

* n* q& i' k( T& T1 Y2 P0 h2 J9 Z: z5 q3 V2 g/ {. U2 e; k# @
set-plot-y-range 0.0 ymax
1 I0 c! {  |6 B+ s
end
: d+ ~. U9 i0 g( d; E- }3 I3 x- @
to do-plots
2 Y3 D0 g8 k- B* Eset-current-plot "Trends-of-Local-reputation"
* s0 J8 t( E) Q& ~set-current-plot-pen "Honest service"
0 C0 s/ H' N: o5 kend) s6 q$ }/ N9 S8 q( z

/ J( h) Z5 ^; C4 I9 j[ 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.
  @+ B1 t6 K2 y. t0 ?4 ]- w! [$ S# |4 G
; ^7 C7 p, H' l3 b. g+ h9 c$ |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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