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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:
8 ~; H# \6 U# |* H$ E# T8 ?to do-business
) [9 O4 l3 \3 r3 P rt random 360# ~) d9 N( @) Z8 g; l
fd 1
' y+ [0 E2 ]3 N( ~2 z3 _  ? ifelse(other turtles-here != nobody)[
# u, u# l1 F8 z2 ~9 J5 _   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题./ V+ q9 j! H% o7 R6 h! h" R$ D( H
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    2 n1 Z: W/ Q3 B7 \
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
+ z& u+ m: v* P0 m3 c: r   set [trade-record-one-len] of self length [trade-record-one] of self
% Z* U- q7 s6 f3 E+ V# p2 J( ]   set trade-record-current( list (timer) (random money-upper-limit))
! J8 C) k! t/ N2 R) P1 s
( ?1 {1 l5 z  U+ C问题的提示如下:
  M8 o  m; M9 g& I5 _6 n3 A3 B+ K# ~% j, k
error while turtle 50 running OF in procedure DO-BUSINESS* F5 k+ O" F3 ?% R. k# W
  called by procedure GO
$ F: }1 G7 G$ k0 W$ w. k  L% r: ^* }OF expected input to be a turtle agentset or turtle but got NOBODY instead.' ?* ^3 B3 I3 U6 z+ \
(halted running of go)
. X4 M" o0 u& }& ]6 `6 n' K" }" J! M0 K/ M2 [. u5 f' N% b
这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~
4 y. a2 l1 o. _; l另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教! M* b( o# B" p
globals[: d8 r( [1 P8 @' B
xmax/ K  K) i9 V% E7 Q5 p
ymax& d( A1 S0 V# x$ \  e
global-reputation-list: g! F5 C# ?# j5 K' J5 X8 ~
' }! y" e* n5 I: V1 }, O
;;
每一个turtle的全局声誉都存在此LIST( x3 J( Y8 p1 \+ i
credibility-list/ r/ o+ `$ I0 o6 z' C
;;
每一个turtle的评价可信度
0 M" f9 |: F- ]honest-service
- h1 Z9 h. p8 a5 a1 a; b3 g; y/ \) hunhonest-service( _# O4 i% v! p1 R6 c4 k$ k. B
oscillation( k9 c6 |7 Q* p" U* Y( F* B0 L
rand-dynamic
+ N$ \  n5 U) c( K$ c1 @! R, W2 O$ R]  m0 K. w/ L# A" m( X# ^

1 x) z% E* q. i/ x7 qturtles-own[  E# I* j% ?/ _% c/ y
trade-record-all6 [/ ]* j* l6 k# J) f3 l
;;a list of lists,
trade-record-one组成
) d" _3 O& {2 l4 ftrade-record-one
/ C# ~) L3 E! s' F# u* B2 g, h;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
# w& e  M' \6 p7 Q# n' n8 v7 L  u: ~  O$ h  I9 {
;;[
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]]
1 k) Z5 L2 f# s2 s8 O1 Q) `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]# C5 Y4 j  c2 |# P' `  u. [4 x# I
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
6 {% z& o2 n1 Pneighbor-total
' ^% G! N1 ^; I8 J& E- k;;
记录该turtle的邻居节点的数目5 T" R, ^* n$ [: s2 I
trade-time
, w- U6 i4 Z! f& n# T  v;;
当前发生交易的turtle的交易时间) x7 p$ W7 }# B) L4 B) i% Y
appraise-give" b5 }, v& q, ]# b1 a
;;
当前发生交易时给出的评价) d) ^8 d& m$ S
appraise-receive
2 t! R0 g; [  f& D7 a;;
当前发生交易时收到的评价1 l: ]9 w3 q  E; K. P6 o$ a) ?
appraise-time
3 d8 D4 ]' w% N8 H+ B- C;;
当前发生交易时的评价时间7 O, l1 i! Z' a* Z6 F
local-reputation-now;;此次交易后相对于对方turtle的局部声誉- ?% C4 o. i: g
trade-times-total5 o; A; Y3 x- t: H2 U3 W
;;
与当前turtle的交易总次数
; r6 j5 b* R+ G& U& ^3 L4 U. b" Itrade-money-total3 q% P$ ]+ x7 C% k/ v+ ?7 H
;;
与当前turtle的交易总金额: H" l! l5 o' j: b
local-reputation
$ J9 S9 `% d" ^! Yglobal-reputation0 l& u1 n6 W9 w4 U! s+ B. N
credibility. A: R: Z5 d% {
;;
评价可信度,每次交易后都需要更新1 d5 p: {- V' I4 f
credibility-all: s# R. \; y  A" o& }+ b- X% R
;;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
' {; V" T' o  `  _$ D: `+ c- ]* e
;;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
0 d' Y% R5 F( z( E7 ?5 ~, Ncredibility-one! {" t9 o1 p8 z2 F: I& g
;;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
5 `8 e3 D9 j; ~# t$ B4 i0 c& Rglobal-proportion
; U9 i7 W" [' l: |4 Ocustomer
$ m  Q9 v$ Z4 Y/ Ncustomer-no" c9 V: Z4 }; [+ k
trust-ok
  c$ p3 d8 y  E6 [6 \trade-record-one-len;;trade-record-one的长度
9 s! h: N7 Z' F; K' A+ v0 F: n]
9 o7 [- t! Y- m0 j7 Z2 i: @9 C( N, C; N. |0 g0 B! A
;;setup procedure5 @) u( B  Z& k
" o( [* m, {! m* ]$ v
to setup
2 E8 m6 u, e& l, N' N; Q
( {" {9 {: H- W* e/ J/ M- a' wca
. j* T. g7 t9 |: b+ l

- n3 O: t% U$ i$ Binitialize-settings

, [, l$ R1 ~! o2 G. Z; g) x# a$ ^/ H# g& H  S: h) H/ S
crt people [setup-turtles]
- N' N+ G4 K( |5 z: k, ^

# f: o' U, y2 breset-timer

  Q! z5 H  g# n6 T; h
1 C" l6 Y3 {" w% [& [poll-class

- n8 E% e" z& M) B  |0 o) x
% ]$ a# n3 j$ [: R5 E7 {; qsetup-plots

, ]' a8 I! _* \- L! x: m# x) `$ d4 g
, c! `$ |$ H- ]/ x5 |: L# ~do-plots

2 y) f4 J0 _6 c# Cend
8 f& x' Z2 M+ z4 Q$ n  w+ s  Y, t+ }% m" h
to initialize-settings
; G2 i/ H9 ]* F% ?" @/ x) Y7 g; H8 o$ ]7 `
set global-reputation-list []

" ^, G) c5 I) B: s8 `1 ^3 d# H# \: M
set credibility-list n-values people [0.5]

+ M) n2 V7 n2 u! `& p+ k/ ~: G
1 I5 l0 o; P5 e6 d+ h0 U/ nset honest-service 0

1 L/ b" J1 T9 I! B  D. M1 U! |  ?6 o1 a8 G
set unhonest-service 0

' w2 G9 U9 p7 ?% K& T/ D) k% e' c4 t  c5 \) l
set oscillation 0
7 I9 k: i) \4 o* z  [

$ t! z1 X1 s$ m0 F9 v) _6 S% N0 ?set rand-dynamic 0

8 u+ r% p: b! Xend* ~" x: d2 L% ?/ {; H% _
( B; h, j5 `& ^. n: h+ L+ b
to setup-turtles
8 q- h  L" h8 `/ L/ z: @set shape "person") o5 I; u3 I6 `% N
setxy random-xcor random-ycor
# E& ^/ d. M2 f% [9 S* z6 q/ R$ mset trade-record-one []( h0 Z$ Q9 d* N/ v$ k' A" g; v
; m$ v; ?3 \7 \0 z  k/ j7 L
set trade-record-all n-values people [(list (? + 1) 0 0)]
& I6 R5 U( p$ y

. u/ r/ z! b( i6 `6 Aset trade-record-current []" r' F  t+ l3 S
set credibility-receive []$ F4 V& o, ~, m5 b* Q
set local-reputation 0.5$ A3 W4 @$ W) j7 }
set neighbor-total 02 s( x& B$ O! \
set trade-times-total 0
4 Z0 U  Y& g0 wset trade-money-total 0% g6 f; v, w3 F4 L) l
set customer nobody
$ G  i( B3 p0 e' Q, B! m0 gset credibility-all n-values people [creat-credibility]" g" y( s* `; j- b4 q% o( r
set credibility n-values people [-1]: _  t0 \) Y7 n7 D" p" |
get-color
: i2 ^6 N+ v9 g- C3 H$ Z8 f3 @

! H! p" H% P3 u0 ~1 N' ^* O7 o  hend
# M* Y1 e1 m' S/ h
) x# z& e: X% ]3 S/ |+ X: f2 C  Xto-report creat-credibility0 B# ]7 g6 L) s& a5 K4 f- K
report n-values people [0.5]$ k% W1 f( L" D- w+ Y' [
end
4 ?: d8 K! a( M! R
, G4 ^  _/ O5 u# T' x6 G$ q. X  ~to setup-plots0 Z% _. U- N* V& h
# q6 k& x$ U, r$ v7 l
set xmax 30
) r7 F9 {, K, Y- P
  I  _$ w: A, R9 |" e  P6 R
set ymax 1.0

* L* c# K) H# h$ J1 n6 h7 n7 H! n% M- n2 k  c
clear-all-plots
, y! \# j' ], c: C1 V* f
7 @" U; j9 p7 G0 o* e1 u3 V
setup-plot1

  [; J) f; s, H) L; J2 f# j5 l4 v" \0 |
setup-plot2
% v2 Q, B$ L9 K8 [  a4 @+ T
; c! [# K3 P. g5 K/ g5 D7 ~
setup-plot3

0 k, n( z5 R: Y5 `end% O: B9 W2 f% t6 h  f) ^4 L
, A& v& R4 x- e  g% v
;;run time procedures( H. c5 m1 d# _) G
# t9 O: K- `* s( f- Q' x
to go6 a# H% J2 _* j5 X

7 \* Q# c  u) l! U& mask turtles [do-business]

! S% c: y  r% `9 \# L. Vend0 H* C. |. g9 x( j3 r( _
3 F( s/ T6 U7 w$ Z- w1 w
to do-business
4 d" }2 [0 o# i7 C8 D* c
9 C" E4 Q0 M" I+ S- k4 c
! k+ D- s, D1 }) x5 z5 s( C
rt random 360

3 b+ w! {2 ]7 o6 [7 b1 |5 N; q5 S/ l- o
fd 1
) s1 \0 n9 H; x, N4 @3 H

: J  d9 k1 w9 t6 U; J/ y) Cifelse(other turtles-here != nobody)[

6 i. v- {0 s, d8 V" z; ~: T: N# J  m9 m& W
set customer one-of other turtles-here
1 }) V4 g  X# h/ i3 Z# ], I! W) c

& A! {- u8 Q2 ]9 {;; set [customer] of customer myself

! A+ Y* Q( X0 p, ]$ l9 ~2 a( [0 I$ T9 L. K. y5 `
set [trade-record-one] of self item (([who] of customer) - 1)
8 w9 n; L5 \& N4 o2 o) a[trade-record-all]of self+ j9 |( a' t9 |- u
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
/ U5 o& q) y0 J$ J& a
3 H; m) [4 S6 r2 c9 o
set [trade-record-one] of customer item (([who] of self) - 1)- u9 H) t: G$ u( ^
[trade-record-all]of customer

6 t# M8 \( g' j8 I! M6 p! g
  R  v8 j/ E" qset [trade-record-one-len] of self length [trade-record-one] of self
: k1 Z9 ~+ Z7 M4 N

3 Q( m: V! R) v1 _( Nset trade-record-current( list (timer) (random money-upper-limit))

. z7 v) |& m% P% }# H
, h# e* e0 I/ D* y9 ]: Xask self [do-trust]5 S7 r# `( X( g5 {  u
;;
先求ij的信任度
$ o# f9 @3 B/ x$ X1 S2 l3 G' W0 E" C2 T2 d2 d& k
if ([trust-ok] of self)
3 g+ s+ B0 T+ |4 Y2 `, v, G9 @) ~7 X;;
根据ij的信任度来决定是否与j进行交易[
. T/ P/ E. l  wask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
5 g: ^9 x" n8 V* x6 w! s* _9 ]+ S0 R( {  ?4 o" f6 y/ `
[

7 N% R0 r! g" R& r3 L& ?' b$ G
/ D3 J! _4 i7 j& Ado-trade

( S& r3 O' v. O& [$ V9 s; z6 d3 P$ o* v: ?- G7 u
update-credibility-ijl

7 ]4 r8 [  W( p' Y: `4 b$ X- E" z# \+ z5 r* z  R3 F2 @
update-credibility-list
5 _  A+ M; @0 }9 @3 c$ t2 R

8 C4 F: t8 q0 K5 s9 S& _6 H2 ^% A: {  K
update-global-reputation-list

* I3 f& E3 w+ }# @
) j# O* I, n$ V1 n. L4 |; B# }poll-class
6 y/ V( C/ q/ L9 X3 U

# _# c: M6 s% l- q! ^. R6 tget-color

* E/ |7 h( g; U6 J% L. R
6 c; G4 j+ e' |! G. U2 C/ I7 V]]3 F! t) V. x4 E  F

2 R( R. W& l6 _4 I6 H& p' g;;
如果所得的信任度满足条件,则进行交易
# Y4 }# E4 ]/ `, F  C
; O' g& N5 H& \; J6 O[
3 Z: p4 i5 X# F% G& c9 V+ J1 s3 P
9 E# g8 `" Z6 ~" t1 ~6 A
rt random 360

' U/ P$ ~" Y3 q9 M# O# ?  T* e1 K* u2 Z1 ]8 w/ _; W' J& H
fd 1
! s: w- D& k$ l: x! c# f

* D1 t" X: Y/ Q% _1 I& Z]
! \' o! Q$ p" {% Q% U

* G7 ?) P% n& B, H: [" o7 Xend
1 O: R* Y5 E6 ]/ U1 s0 X

9 k3 ^% ^/ Q) `, Q% \5 Sto do-trust   c0 Y# K, W3 z: A$ J$ D; v
set trust-ok False6 G4 j! L& c" R9 V' `$ {

" D) r( _1 D/ i7 Y5 i

) _- O) i+ f7 x# Ylet max-trade-times 05 _  j. [8 l, K  k- t. ^. R
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
: `) n0 g, `1 u  ^- mlet max-trade-money 0
" U$ M( o+ H7 X: jforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
" ]4 m: y" b# wlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
( h& O% e  @; b. k. }' K6 D, ]& e4 [, g4 H
5 V0 I2 N0 p2 Q& E3 n
get-global-proportion
7 R' F( H: L) F; s  U0 t) c$ Vlet trust-value: s6 f& ?* I- G, U3 `% A* l: \
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)

: C! v) L$ X/ W$ {# R9 w+ O( x9 Mif(trust-value > trade-trust-value)5 i' C6 h( T! b2 e; ^( X; ~! [
[set trust-ok true]
  e$ P( `" R  h0 Q, O* [: s3 Iend; c/ ?, A% F! \( q+ q
9 C5 |$ b; @8 l2 V5 a/ P% h
to get-global-proportion
" v6 C+ _, U; s4 G, l8 fifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)8 s! j, O- g% a" A6 J* }5 j
[set global-proportion 0]) |' j+ w6 T, E! c' ]+ W2 t
[let i 04 S' n, w: k# e5 f2 s+ W
let sum-money 0
/ p! M  T" K5 ?' [3 ~while[ i < people]4 K& K: P- b4 d" ?  M
[# @$ G9 e2 V& s8 V( G0 C
if( length (item i
) Y8 |( S; M; W8 D3 E: {[trade-record-all] of customer) > 3 )
! Z7 P; [& A0 {
[
* R7 z( `2 k! V0 _( _8 L8 _! Lset sum-money (sum-money + item 2(item i [trade-record-all] of myself))7 t5 u4 O. ?" M4 i. b. b9 j
]1 `, e( `+ U# `
]$ X4 h8 S4 G1 i9 f4 b; c
let j 0
9 g. F& |  k6 @* u# F% {let note 0
; l8 C8 m! P; ~9 P& Swhile[ j < people]
- k( N; q: t1 \+ j  @[* e% l1 e9 ~, p' L
if( length (item i. E* M( Y( p- w) J2 ~  h
[trade-record-all] of customer) > 3 )
- |. j# v* H1 w# B7 h2 }/ H
[
3 H5 b! n* e! D+ K2 x" x3 o' \$ ?ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
) K: u7 L! X, `. S2 t$ v[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]( D" z& K' H- _. m/ K& z$ L
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
5 A$ |* g* x% k' G2 L2 U, w) g]
, P& i: s  x4 K6 Q& K, T]
; ?3 v  B  V  sset global-proportion note
( y# R6 L, A; |. \]9 `" s& n5 X; Q7 K- S
end0 u3 f) J& m! M& j5 u5 x
* F* n* B; H1 _" G! R
to do-trade
* t2 c( c8 K* V5 M. i- @;;
这个过程实际上是给双方作出评价的过程6 |) {7 Y4 F% @  M  }2 n& N, t
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价% A5 M) d/ m& ~, Y+ _# W6 q
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
8 r: m/ U# S0 U" \" x! `" ~+ n( sset trade-record-current lput(timer) trade-record-current
- q4 U" m. H0 k& N( E;;
评价时间' h6 w" O$ S0 B8 \/ l
ask myself [
& W; b1 L  \. Z# I" kupdate-local-reputation% S( J! g3 H$ d  m' T- }  C0 F! r
set trade-record-current lput([local-reputation] of myself) trade-record-current+ Z8 ]3 Q# Y" S2 e
]
  `$ x- k! y7 Q9 \; Hset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
! ~# `. S* b4 z0 t;;
将此次交易的记录加入到trade-record-one
) e0 [) o6 T7 q' X7 {2 vset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
( e$ ?: C, q' c' e" ^! {let note (item 2 trade-record-current )  {. v' n3 q: a3 _( _* }
set trade-record-current& D; d* l7 z* y6 T, _- O2 ~
(replace-item 2 trade-record-current (item 3 trade-record-current))

  d9 I  D8 T5 B& K0 \7 Qset trade-record-current
, l  M- X4 X8 C' g(replace-item 3 trade-record-current note)
! o2 M( D7 u6 `: F
, i7 Z" q: x. [. u+ q

% ]  g0 o/ f6 \% Pask customer [: W* C' i7 {" C6 |- b
update-local-reputation
, z- v  F  W4 I( T) i8 v8 dset trade-record-current% j* N6 j0 S1 Y3 S- i9 }2 i& \8 y
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

8 N; T' m; o6 S: E) T]1 J  D5 t4 q, p. D8 r7 B2 n4 X
+ Q  X- q3 Y8 \: x0 R! t
0 Z* i7 B" q/ e9 }/ d8 g
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer7 S2 C2 \  E( U4 k( R

' f# `  y3 ?1 M; I* Z6 pset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
. z) ~  P4 g( {% F" h;;
将此次交易的记录加入到customertrade-record-all
( R- x+ J4 W" I; N8 @1 V6 n7 t4 jend- _7 e/ X9 Y* D# u3 Z

4 S- D8 [2 {# `+ Q0 O9 T& X# dto update-local-reputation! {8 g7 e: [$ {. G. _7 c
set [trade-record-one-len] of myself length [trade-record-one] of myself
, Y  c, M+ L* }2 T6 {4 z0 O( Q" j+ t; c
9 M# f* z2 ~* N0 b* y: Y
;;if [trade-record-one-len] of myself > 3

4 c9 [( h. V" z; W' w+ Kupdate-neighbor-total
' q7 w( Z: Q6 o;;
更新邻居节点的数目,在此进行$ T& Z! G& v+ h$ [! x( I( ^: N
let i 3
6 _9 y) l, c5 `& ?7 r' r  olet sum-time 0% u5 X9 f( [. }/ T3 O8 o
while[i < [trade-record-one-len] of myself]
% }3 ~2 I7 L* S: T[+ Y" u) d' \9 _6 J" o
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )' @$ l2 D! Y7 U4 Y3 n# }
set i0 Y& A. q' T' K
( i + 1)
3 ?. }- C5 Q% j
]# K$ A! }5 m) }3 C: ~5 [
let j 3
" h  g/ `' f( n4 I: k3 ]8 W# H- vlet sum-money 0
3 s$ h1 ]  x7 @1 _/ W7 ywhile[j < [trade-record-one-len] of myself]
+ h# E: H% o  g+ |# V! R- s[, a0 }2 |0 o, |: B- k, l
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)
0 v5 K9 W/ W1 @4 }2 @6 Mset j  q5 k+ f. H& W/ u8 C0 ^/ V3 n/ Z
( j + 1)

- n4 C% g5 P+ Z% P]
6 N( Y% f+ ?- v6 I) J, Alet k 3
/ y% B: S4 ~5 y. Z; f" tlet power 0  S) o2 q4 m/ ?& _* i. f! ?9 K
let local 0
( P4 N1 V% _- `3 S5 @/ n: N0 b: xwhile [k <[trade-record-one-len] of myself]
* m+ D+ [$ o! ^% K5 E[1 k. [" B# O2 h' I  ^% r0 d5 B0 p
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)
/ W9 K8 N) h! {7 f: [set k (k + 1)
( \, T: K: s; k]
- W5 m- Z" H: H& O9 {2 Eset [local-reputation] of myself (local)+ k# B, j( I. P( D8 A
end
+ v: x) B4 l6 N
& l: s6 n+ d  F5 {  a) H% Y/ }# A3 hto update-neighbor-total5 O% k5 y  T; `
3 ]+ x" Y0 h& Y: x9 r8 T
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ], _8 N& N( h- R7 \  R) f
0 X# n' g0 F5 ?+ Q
$ ?( n% w8 a" O$ u
end5 j: ]9 S! K2 ]: ?! h0 w
( A/ O+ M  g; b2 S7 F) L4 v" H
to update-credibility-ijl
) a, z9 L) E# ~5 r" B, V) P% m7 n. W0 k) j! N
;;
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! K5 h* H+ |2 t4 Hlet l 0
( d0 C3 j4 t0 ^9 p& Wwhile[ l < people ]
2 L/ P, ]1 v5 U% J" s; T( |6 U;;
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
1 o& {7 Y, U$ _) q  k[8 W! c+ j2 w! t' p1 P
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
' y7 P4 {) l; Q: Iif (trade-record-one-j-l-len > 3)) O* o. x% W* @7 Q6 j" s! 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
& W) z# r+ Q- Ylet i 3
0 r6 y! k6 k7 glet sum-time 0/ T2 u( z* C, h$ I1 \% L
while[i < trade-record-one-len]& F1 c+ l2 c4 a
[1 ^" A7 Y, b( F, o9 G+ c( X
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
1 q3 ]4 o. {* {set i
" Y8 ^: m# E! b/ y, h( i + 1)

9 o! p' }7 K! P' p/ ]0 ^]
& h6 s$ f& o6 W7 n$ z( c2 b1 Qlet credibility-i-j-l 0
% i3 ^* q& D% b" a;;i
评价(jjl的评价)
; d; m1 d6 P# i0 {- e! W) U6 m1 Llet j 3! s- x  j; `( v! v( L7 |5 P
let k 4/ a  [' ?% j( {# V! [
while[j < trade-record-one-len]
1 e3 \7 w' U7 m# p- }  a9 L[# e4 b/ G5 s6 T/ k" ^% h4 _4 F
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3 X1 `7 @& Q, v- a$ q3 w, Z# @
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" Z; H+ ]4 R2 W1 u
set j: e+ m% I. [- ~0 a+ U* m
( j + 1)
5 u7 O# ^, Y9 f  L9 y) D% l
]
9 R8 S- c( l4 g# s" ~2 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 ))7 h7 m, L6 \4 |- H; Y6 a: z
6 I# u5 J) b# ^/ _, A

- s" J/ ?" W0 Q& mlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
9 u7 o% {7 c$ _;;
及时更新il的评价质量的评价
) G6 f4 [  u3 p' D* Z) t6 D; l) [( }set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]% O/ n* e; H! Z
set l (l + 1)
5 J1 O7 Z' d  O: k. l]3 z9 |5 m5 x; Z. w! q' u  O8 J
end; n, c& s  F$ o6 D. s0 _
& K# r* k) P" r' b+ |0 S# f
to update-credibility-list& n, P. w2 c8 f  K( [
let i 0/ Y+ g/ E- y/ C0 s
while[i < people]
. e. \. }/ U5 g* v. w8 g[
+ x' L; I: K# S4 i5 `8 Ylet j 0) [$ x: i8 |& b
let note 0
5 I+ B3 `" E5 alet k 0
0 g/ v, d3 w- h4 ~9 I: P: Y  q;;
计作出过评价的邻居节点的数目
6 d% W7 {! e. Rwhile[j < people]. |1 w8 D$ ?7 U: {! |
[
7 r4 o; ?. _5 ^1 c: I' \. Y1 yif (item j( [credibility] of turtle (i + 1)) != -1)
3 R  {+ H0 {4 n; k;;
判断是否给本turtle的评价质量做出过评价的节点
7 r1 \* W: N; i$ g- s" P9 W- n[set note (note + item j ([credibility]of turtle (i + 1)))
" G3 t/ {* t4 B5 ^;;*(exp (-(people - 2)))/(people - 2))]
0 k0 n, Y" G- y1 K5 }$ m3 k
set k (k + 1)
4 Q8 j  l, k2 w. I2 c]
7 r6 _3 T6 l; O* _, uset j (j + 1)
% F" c% |' C; t8 p! t$ ~  A]8 ^3 F* A& Y$ D% f1 i  D
set note (note *(exp (- (1 / k)))/ k)5 G6 a8 D- x  J" n* f7 w* `
set credibility-list (replace-item i credibility-list note)
  u7 q. Q+ `6 h# E3 |  D$ ?6 pset i (i + 1)
6 r( Z4 n) k& H- f$ e! A7 F  Q/ B]
/ W' S: S: V- }end
. d, B* k+ f/ U( O
" y* P% Z$ N* `# I% S) L, t- `to update-global-reputation-list* `6 G! s3 G: h, e3 F  B
let j 0
7 R; ^3 c  Y4 Wwhile[j < people]
( _) ~3 A, D  Q9 `# t8 D( R$ Z[
" \  o7 z- {+ Tlet new 01 G7 `6 _5 |/ Y% B: d
;;
暂存新的一个全局声誉
$ v9 T- K0 b3 K6 g4 Q2 ]let i 0
, L4 `2 A& K0 [8 alet sum-money 0& Q5 I  U8 U! e3 ~; [
let credibility-money 0; H4 ~& t( [/ |/ ]- O
while [i < people]$ S3 `* t% B' a0 I4 K& Z
[
0 u) h3 r) a  x/ G- t0 Iset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))2 J: j$ [5 Q, t
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))$ T6 |. _4 p' T2 C& Z
set i (i + 1)
8 F$ Q6 J: p% K. w, @+ g]8 V! F4 _/ F! s2 s4 o7 n; l
let k 0) ^; i! ^9 l- G, d, b
let new1 0
% K, W, V' z4 C: [* H# u# c0 awhile [k < people]
( q! \2 O! u& j0 i/ ^+ }9 A/ z[# a& A# x9 f( O: d4 l
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)
% q, {+ Y# O0 Z( Lset k (k + 1)
: I; i5 A3 \5 M]
4 y' O3 P2 B6 I' i+ {set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 9 I, P  m; W3 ^" @8 X" D% ?6 H- ~
set global-reputation-list (replace-item j global-reputation-list new)6 r  L& f/ B+ F: y5 H
set j (j + 1)
! n$ `. o; D/ H4 Z]# \8 d" c  V( d( x6 t2 \8 T
end
  D. Q9 J! S0 n# R; L; E4 k5 a: |1 M
/ y" q; N8 [0 z) N
: _% z* {0 Q/ h6 K  @4 r
to get-color
: {' u; w! {5 q; ?* h0 r6 A" Y: r
set color blue

& x1 s, }7 S, t# t- F' D6 r' F$ M2 E. iend7 u: I! Z7 r8 B. K! n7 a
2 r: i, M( v5 {: F' w  H- V3 s
to poll-class! H9 T8 A; y8 v6 a+ A
end, O$ m- Y8 B' q! O* E1 r# e
* t' a9 C% Z' z4 n2 i
to setup-plot1
( ^5 v! S3 I% b; ?  ~
1 f9 A# U+ r  ~  [$ T3 E$ Hset-current-plot "Trends-of-Local-reputation"
4 Q" V1 I0 x0 j( R
" b+ c6 M6 W8 f2 E; y" a* ^* h: m
set-plot-x-range 0 xmax

8 \7 N' @; r1 W+ I. l& y( s
3 v3 h- w3 l; _, |2 V' Y7 o9 R; lset-plot-y-range 0.0 ymax
8 n- i5 U( b3 a) T
end
" v% Y! B, l) m7 G  K% P# N" t. o7 Q# N  u
to setup-plot2& T! _3 ]9 k7 _: K1 j3 F

& N9 `6 m, }9 e& s2 F* ~set-current-plot "Trends-of-global-reputation"
( Y5 P& _+ W5 t. k8 t/ M" y
7 E& a8 Y. b: ?  [& P
set-plot-x-range 0 xmax

7 l+ Y8 J0 w$ `* h9 [/ {6 K# W. B. E6 E. j  f, u1 B' r
set-plot-y-range 0.0 ymax
5 A+ o  ^- p6 s5 m0 Y2 {! I/ B' Q
end
! p! G; X0 E1 O0 H
0 v% J: e0 y+ q" Dto setup-plot3/ a9 h6 ^# Y* j+ Q/ R* d) @" {
2 {' h% C( T, X- m! Z* V5 P
set-current-plot "Trends-of-credibility"

8 Z  A2 ~  e1 F
0 t" D$ t* U& u4 o7 ^set-plot-x-range 0 xmax
# v0 v" G0 e# ^$ e2 h' o( l

: o& k/ ]9 C- l7 r1 \9 S$ U8 _set-plot-y-range 0.0 ymax
) o- b% }2 G' h# f; K# w
end* |- L/ F1 d5 s7 A" s, O* e$ {5 `
' q- B2 t2 ?4 {9 O
to do-plots
3 c" k$ Y. W  O. q+ D7 aset-current-plot "Trends-of-Local-reputation"$ r/ F& v0 c- Z4 v! R7 g( b( W
set-current-plot-pen "Honest service"" a1 R* J, c; f$ C% O
end
! _. v$ `2 x3 W) @# N) v4 u
, N9 m& |6 H* o$ P[ 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.5 e3 L% A, X& {; I; W
' _: ?- i5 x1 B4 N, l% p
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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